Difference: BT2021 (1 vs. 9)

Revision 92021-09-23 - XuMing

Line: 1 to 1
 
META TOPICPARENT name="HERDContent"

HERD prototype beam test 2021 issues


Changed:
<
<

Page will be migrated

>
>

Page will be migrated to new twiki server

This old twiki server will no longer be maintained.

  Please visit https://twikinew.ihep.ac.cn/twikiherd/view/HERD/BT2021 for further updates.
Added:
>
>
You'll need fistly to register an IHEP SSO account

https://login.ihep.ac.cn/regist.jsp

Once the account is approved, you'll need to join herd group, which is instructed in section 2 of the following link:

https://login.ihep.ac.cn/help_collaboration.jsp

basically in the top bar "Profile", then "Group information", and "Apply for collaboration", in the dropdown list choose "HERD" and submit as attached.

Local admin will confirm your application and then you could get access to the new twiki page.

 

Travel issue

Beam schedule could be found at the beam coordination page.

Revision 82021-09-06 - XuMing

Line: 1 to 1
 
META TOPICPARENT name="HERDContent"
Changed:
<
<

HERD prototype beam test 2021 issues

>
>

HERD prototype beam test 2021 issues

 
Changed:
<
<

Page migrated

>
>

Page will be migrated

 
Changed:
<
<
Please visit
>
>
Please visit https://twikinew.ihep.ac.cn/twikiherd/view/HERD/BT2021 for further updates.
 
Deleted:
<
<
https://twikinew.ihep.ac.cn/twikiherd/view/HERD/BT2021

for the updates.

-- xu ming - 2021-08-13

 

Travel issue

Beam schedule could be found at the beam coordination page.

Line: 35 to 29
  It'll be necessary we firstly to evaluate the possibilities of these alternate actions, and the manpower is sufficient or not.
Changed:
<
<
  Items short description and when to act operation catalog disassembly and then assembly the instrument after shipment, operations necessary or not difficulty level (extremely, hard, advanced, tricky, easy) training time needed on-site Chinese needed or not, for translation on-site manpower needed
Crystal array special packing 1). disassemble the special packing surrounding CALO at the assembly stage;
2). install the packing back immediately when the tests finished( the action should be done before CALO protortype transported to the beam buffer zone )
mechanical install and de-install necessary easy < 1 day no >= 4
(at the assembly and packing stage)
calibration scan the LYSO array for equalization study by taking use the global table. The equalization is scheduled at the beginning of the run and at the very end of the run. beam and general table operation, synchronization not necessary easy < 1 day no 1 per shift
(real-time operation during test)
Trigger system DI2C joint test DI2C synchronization protocol and hardware.
update firmware remotely after the joint test at the assembly stage.
parameter tuning at the early run stage.
computing setup,
hardware/parameter tuning,
beam operation and synchronization
not necessary. Only cable connections easy 1 day probably real-time cooperation during the assembly stage
switch neutral filter if the signal intensity is not appropriate, disassemble the trigger box, switch the neutral filter with a new one and then coupled with the trigger PMT. This action will only be necessary at the early run stage and lasts a few hours. precise mechanical de-install and install probably necessary hard 2 days probably 2
(operation once or twice at the beginning of the beam run)
backward calibration mute the beam and then send command to the trigger system, several times/day during the full beam data taking week . beam operation and synchronization not necessary tricky <1 day no 1 per shift,
can overlap with the requirement of calibration
IsCMOS camera optical fiber and taper alignment due to the vibration in transportation, there is a position deviation between the fine installation interfaces between the fiber and the optical taper. An alignment procedure is scheduled to fine tune(10um accuracy) the positions between the optical fiber taper and fiber panel after the arrival of equipments at CERN. super precise mechanical operation necessary extremely there is NOT a 'standard' procedure. The XIOPM senior engineers is trying to figure out a possible solution for remote guidance solution needed >=2
(at the assembly stage)
power supply system the power supply system of the camera is quite complicated, any kind of mis-operation will result a termination. For secure consideration real-time confirmation of each power operation will be necessary between people on-site and XIOPM engineers.
An operational-friendly power unit is under consideration, and there's no guarantee it'll be available for the 2021 beam test.
full and real time power control necessary hard 4 days no 1 per shift,
>= 3 electronic engineers
(full cover the whole week of the test)
acquisition card and storage server the data acquisition card and storage system will be shipped separately from the main computer. The computing setup and tuning will be necessary at the assembly stage. computing setup necessary tricky 2 days no 2
(at the assembly stage)
TRD detector chamber gas leakage test connect the detector pressure sensor interface to the computer to check whether the detector chamber is leaking. If the detector chamber leaks, switch the detector to the flow circuit; if there is no leak or the leak rate meets the requirements, the closed-gas detector is still used for testing. The leakage test and switch will be only necessary at the assembly stage monitoring, mechanical operations not necessary easy < 1 day no 1
(at the assembly stage)
detector interface connection connect the detector's high-voltage line, front-end electronics, back-end electronics, and computer at the assembly stage and finished stage cable connections, computing setup not necessary easy < 1 day no 1
(at the assembly stage)
noise reduction hardware parameter tuning and real-time monitoring at the assembly stage and lasts around half a day. hardware/parameter tuning, not necessary tricky < 1 day no 1
(at the assembly stage)
real time access during the beam data taking, remotely connect to the computer to perform beam fetching operations will be necessary, and on-site shifters will be asked for such kind of help and operation. real time computing operation not necessary easy < 1 day no 1 per shift,
can overlap with the requirement of calibration
General structure platform Assemble seven sub platforms to the common general table, test all functions(2d scan and rotate) at the assembly stage. Install each sub detectors(PSD, CALO, TRD, FIT, SCD) on the general table, and align them to the beam at the assembly stage. mechanical install and de-install not necessary tricky 2 days no 2+2
(2 for the global table mechanical installation, the other 2 for the remote control electronics setup, at the assembly stage)
packing box open the packing box before test,
pack up all devices in to the same box after test
mechanical install and de-install necessary easy < 1 day no >= 4,
can overlap with crystal packing
(at the assembly and packing stage)
In general, the whole test beam could be divide into three phases and the corresponding manpower needed for these alternate actions is more or less likely:
  1. the assembly stage
>
>
  Items short description and when to act operation catalog disassembly and then assembly the instrument after shipment, operations necessary or not difficulty level (extremely, hard, advanced, tricky, easy) training time needed on-site Chinese needed or not, for translation on-site manpower needed
Crystal array special packing 1). disassemble the special packing surrounding CALO at the assembly stage;
2). install the packing back immediately when the tests finished( the action should be done before CALO protortype transported to the beam buffer zone )
mechanical install and de-install necessary easy < 1 day no >= 4(at the assembly and packing stage)
calibration scan the LYSO array for equalization study by taking use the global table. The equalization is scheduled at the beginning of the run and at the very end of the run. beam and general table operation, synchronization not necessary easy < 1 day no 1 per shift(real-time operation during test)
Trigger system DI2C joint test DI2C synchronization protocol and hardware.update firmware remotely after the joint test at the assembly stage.parameter tuning at the early run stage. computing setup,
hardware/parameter tuning,
beam operation and synchronization
not necessary. Only cable connections easy 1 day probably real-time cooperation during the assembly stage
switch neutral filter if the signal intensity is not appropriate, disassemble the trigger box, switch the neutral filter with a new one and then coupled with the trigger PMT. This action will only be necessary at the early run stage and lasts a few hours. precise mechanical de-install and install probably necessary hard 2 days probably 2(operation once or twice at the beginning of the beam run)
adjust trigger PMTposition if the signal intensity is not appropriate, adjust the trigger PMT to pre-defined postions by a handle outside of the crystal array. The operation may take a few iterations for a proper attenuation ratio mechanical tuning not necessary easy 1 day no 2(a few iterations and tuning at the beginning of the beam run)
backward calibration mute the beam and then send command to the trigger system, several times/day during the full beam data taking week . beam operation and synchronization not necessary tricky <1 day no 1 per shift,can overlap with the requirement of calibration
IsCMOS camera optical fiber and taper alignment due to the vibration in transportation, there is a position deviation between the fine installation interfaces between the fiber and the optical taper. An alignment procedure is scheduled to fine tune(10um accuracy) the positions between the optical fiber taper and fiber panel after the arrival of equipments at CERN. super precise mechanical operation necessary extremely there is NOT a 'standard' procedure. The XIOPM senior engineers is trying to figure out a possible solution for remote guidance solution needed >=2(at the assembly stage)

the taper will be fixed coupled and the alignment action will no longer be necessary
power supply system the power supply system of the camera is quite complicated, any kind of mis-operation will result a termination. For secure consideration real-time confirmation of each power operation will be necessary between people on-site and XIOPM engineers. full and real time power control not necessary hard 4 days no 1 per shift,>= 3 electronic engineers (full cover the whole week of the test)
power supply system the power supply system is optimized with remote control. On site operation only include the cable connections. Once cables are well connected, remote operations by Xi'an experts with internet will be the first choice, on-call electronic expert will be necessary in case of internet problem and other issues. cable connections, computing setup not necessary easy 2 days no 1 at the assembly stage, 1 on-call expert during the beam taking week
acquisition card and storage server the data acquisition card and storage system will be shipped separately from the main computer. The computing setup and tuning will be necessary at the assembly stage. computing setup not necessary tricky 2 days no 2, at the assembly stage
TRD detector chamber gas leakage test connect the detector pressure sensor interface to the computer to check whether the detector chamber is leaking. If the detector chamber leaks, switch the detector to the flow circuit; if there is no leak or the leak rate meets the requirements, the closed-gas detector is still used for testing. The leakage test and switch will be only necessary at the assembly stage monitoring, mechanical operations not necessary easy < 1 day no 1, at the assembly stage
detector interface connection connect the detector's high-voltage line, front-end electronics, back-end electronics, and computer at the assembly stage and finished stage cable connections, computing setup not necessary easy < 1 day no 1, at the assembly stage
noise reduction hardware parameter tuning and real-time monitoring at the assembly stage and lasts around half a day. hardware/parameter tuning, not necessary tricky < 1 day no 1, at the assembly stage
real time access during the beam data taking, remotely connect to the computer to perform beam fetching operations will be necessary, and on-site shifters will be asked for such kind of help and operation. real time computing operation not necessary easy < 1 day no 1 per shift,can overlap with the requirement of calibration
General structure platform Assemble seven sub platforms to the common general table, test all functions(2d scan and rotate) at the assembly stage. Install each sub detectors(PSD, CALO, TRD, FIT, SCD) on the general table, and align them to the beam at the assembly stage. mechanical install and de-install not necessary tricky 2 days no 2+2(2 for the global table mechanical installation, the other 2 for the remote control electronics setup, at the assembly stage)
packing box open the packing box before test,pack up all devices in to the same box after test mechanical install and de-install necessary easy < 1 day no >= 4,can overlap with crystal packing (at the assembly and packing stage)
the assembly stageIn general, the whole test beam could be divide into three phases and the corresponding manpower needed for these alternate actions is more or less likely:
 
    • >=4 persons(mechanical activities), for general structure installation, crystal array installation.
    • >=2 persons(computing and electronics activities), for IsCMOS, TRD, trigger cable connections and computing setup.
    • >=1 person(electronics activities), for TRD parameter tuning.
    • >=1 person(electronics activities), for joint trigger test.
Changed:
<
<
    • >=2 persons(mechanical activities), for IsCMOS fiber and taper aligment.
>
>
 
  1. the beam running stage
Changed:
<
<
    • >=2 persons(mechanical activities), to switch ND filter, a few hours job.
    • >=3 persons(electronics activities, at least 1 person on site real-time), full cover the test period, for IsCMOS HV operation.
>
>
    • >=1 persons(electronics activities, at least 1 person on call), full cover the test period, for IsCMOS HV operation.
 
    • >=6 persons(mechanical and electronics activities, 2 persons on site real-time), for general structure operation, calibration operation, trigger DAQ operation, TRD access.
  1. finishing stage
    • >= 4 persons(mechanical activities), for the immediate crystal array re-packing job.
Changed:
<
<
    • for other de-install job, manpower is not a problem since we're not in a hurry.

>
>
    • for other de-install job, manpower is not a problem since we're not in a hurry.

      -- xu ming - 2021-07-17

Comments

 
Deleted:
<
<
-- xu ming - 2021-07-17
 \ No newline at end of file
Added:
>
>

<--/commentPlugin-->

Revision 72021-08-13 - XuMing

Line: 1 to 1
 
META TOPICPARENT name="HERDContent"

HERD prototype beam test 2021 issues

Added:
>
>

Page migrated

Please visit

https://twikinew.ihep.ac.cn/twikiherd/view/HERD/BT2021

for the updates.

-- xu ming - 2021-08-13

 

Travel issue

Beam schedule could be found at the beam coordination page.

Line: 39 to 48
 
    • >=6 persons(mechanical and electronics activities, 2 persons on site real-time), for general structure operation, calibration operation, trigger DAQ operation, TRD access.
  1. finishing stage
    • >= 4 persons(mechanical activities), for the immediate crystal array re-packing job.
Changed:
<
<
    • for other de-install job, manpower is not a problem since we're not in a hurry.

>
>
    • for other de-install job, manpower is not a problem since we're not in a hurry.

  -- xu ming - 2021-07-17 \ No newline at end of file

Revision 62021-08-05 - XuMing

Line: 1 to 1
 
META TOPICPARENT name="HERDContent"

HERD prototype beam test 2021 issues

Line: 13 to 13
  The probabilities of Chinese colleagues could be present on beam site is limited, due to the local administration regulations and the CERN host states policies.
Changed:
<
<
There're two options if we follow the current beam schedule without cancellations.
  • full prototype tests. The European colleagues take full operation of each sub-detector while the Chinese colleagues will participant online remotely.
  • absent of hardwares from China, includes the crystal array, TRD, global trigger system and general support structure.
>
>
There're three options if we follow the current beam schedule without cancellations.
  • full prototype tests (500 LYSO[IHEP] + TRD + PSD + SCD + FIT). The European colleagues take full operation of each sub-detector while the Chinese colleagues will participant online remotely.
  • absent of hardwares from China, but with small CALO prototype (30 LYSO[Florence] + PSD + SCD + FIT).
  • absent of hardwares from China, without any kind of CALO prototype. (PSD + SCD + FIT)
 This following page illustrate the alternate actions by the European colleagues if the Chinese colleagues can't be present on beam site, while all hardwares from China will be sent to CERN( around Sep. 10th) for the joint prototype beam test.

Discussion of the alternate actions

Line: 38 to 39
 
    • >=6 persons(mechanical and electronics activities, 2 persons on site real-time), for general structure operation, calibration operation, trigger DAQ operation, TRD access.
  1. finishing stage
    • >= 4 persons(mechanical activities), for the immediate crystal array re-packing job.
Changed:
<
<
    • for other de-install job, manpower is not a problem since we're not in a hurry.

>
>
    • for other de-install job, manpower is not a problem since we're not in a hurry.

  -- xu ming - 2021-07-17

Revision 52021-07-18 - XuMing

Line: 1 to 1
 
META TOPICPARENT name="HERDContent"
Added:
>
>

HERD prototype beam test 2021 issues

 

Travel issue

Line: 14 to 16
 There're two options if we follow the current beam schedule without cancellations.
  • full prototype tests. The European colleagues take full operation of each sub-detector while the Chinese colleagues will participant online remotely.
  • absent of hardwares from China, includes the crystal array, TRD, global trigger system and general support structure.
Added:
>
>
This following page illustrate the alternate actions by the European colleagues if the Chinese colleagues can't be present on beam site, while all hardwares from China will be sent to CERN( around Sep. 10th) for the joint prototype beam test.
 

Discussion of the alternate actions

Changed:
<
<
A summary table could be found as following.
>
>
A summary table which was organized by Chinese colleagues could be found as following, includes the procedures of several major on-site operations.

These operations are expected to be implemented with the help of the on-site European colleagues, while the Chinese colleagues will provide manuals(paper, video) and real-time online assistance.

It'll be necessary we firstly to evaluate the possibilities of these alternate actions, and the manpower is sufficient or not.

  Items short description and when to act operation catalog disassembly and then assembly the instrument after shipment, operations necessary or not difficulty level (extremely, hard, advanced, tricky, easy) training time needed on-site Chinese needed or not, for translation on-site manpower needed
Crystal array special packing 1). disassemble the special packing surrounding CALO at the assembly stage;
2). install the packing back immediately when the tests finished( the action should be done before CALO protortype transported to the beam buffer zone )
mechanical install and de-install necessary easy < 1 day no >= 4
(at the assembly and packing stage)
calibration scan the LYSO array for equalization study by taking use the global table. The equalization is scheduled at the beginning of the run and at the very end of the run. beam and general table operation, synchronization not necessary easy < 1 day no 1 per shift
(real-time operation during test)
Trigger system DI2C joint test DI2C synchronization protocol and hardware.
update firmware remotely after the joint test at the assembly stage.
parameter tuning at the early run stage.
computing setup,
hardware/parameter tuning,
beam operation and synchronization
not necessary. Only cable connections easy 1 day probably real-time cooperation during the assembly stage
switch neutral filter if the signal intensity is not appropriate, disassemble the trigger box, switch the neutral filter with a new one and then coupled with the trigger PMT. This action will only be necessary at the early run stage and lasts a few hours. precise mechanical de-install and install probably necessary hard 2 days probably 2
(operation once or twice at the beginning of the beam run)
backward calibration mute the beam and then send command to the trigger system, several times/day during the full beam data taking week . beam operation and synchronization not necessary tricky <1 day no 1 per shift,
can overlap with the requirement of calibration
IsCMOS camera optical fiber and taper alignment due to the vibration in transportation, there is a position deviation between the fine installation interfaces between the fiber and the optical taper. An alignment procedure is scheduled to fine tune(10um accuracy) the positions between the optical fiber taper and fiber panel after the arrival of equipments at CERN. super precise mechanical operation necessary extremely there is NOT a 'standard' procedure. The XIOPM senior engineers is trying to figure out a possible solution for remote guidance solution needed >=2
(at the assembly stage)
power supply system the power supply system of the camera is quite complicated, any kind of mis-operation will result a termination. For secure consideration real-time confirmation of each power operation will be necessary between people on-site and XIOPM engineers.
An operational-friendly power unit is under consideration, and there's no guarantee it'll be available for the 2021 beam test.
full and real time power control necessary hard 4 days no 1 per shift,
>= 3 electronic engineers
(full cover the whole week of the test)
acquisition card and storage server the data acquisition card and storage system will be shipped separately from the main computer. The computing setup and tuning will be necessary at the assembly stage. computing setup necessary tricky 2 days no 2
(at the assembly stage)
TRD detector chamber gas leakage test connect the detector pressure sensor interface to the computer to check whether the detector chamber is leaking. If the detector chamber leaks, switch the detector to the flow circuit; if there is no leak or the leak rate meets the requirements, the closed-gas detector is still used for testing. The leakage test and switch will be only necessary at the assembly stage monitoring, mechanical operations not necessary easy < 1 day no 1
(at the assembly stage)
detector interface connection connect the detector's high-voltage line, front-end electronics, back-end electronics, and computer at the assembly stage and finished stage cable connections, computing setup not necessary easy < 1 day no 1
(at the assembly stage)
noise reduction hardware parameter tuning and real-time monitoring at the assembly stage and lasts around half a day. hardware/parameter tuning, not necessary tricky < 1 day no 1
(at the assembly stage)
real time access during the beam data taking, remotely connect to the computer to perform beam fetching operations will be necessary, and on-site shifters will be asked for such kind of help and operation. real time computing operation not necessary easy < 1 day no 1 per shift,
can overlap with the requirement of calibration
General structure platform Assemble seven sub platforms to the common general table, test all functions(2d scan and rotate) at the assembly stage. Install each sub detectors(PSD, CALO, TRD, FIT, SCD) on the general table, and align them to the beam at the assembly stage. mechanical install and de-install not necessary tricky 2 days no 2+2
(2 for the global table mechanical installation, the other 2 for the remote control electronics setup, at the assembly stage)
packing box open the packing box before test,
pack up all devices in to the same box after test
mechanical install and de-install necessary easy < 1 day no >= 4,
can overlap with crystal packing
(at the assembly and packing stage)
In general, the whole test beam could be divide into three phases and the corresponding manpower needed for these alternate actions is more or less likely:
  1. the assembly stage
    • >=4 persons(mechanical activities), for general structure installation, crystal array installation.
    • >=2 persons(computing and electronics activities), for IsCMOS, TRD, trigger cable connections and computing setup.
    • >=1 person(electronics activities), for TRD parameter tuning.
    • >=1 person(electronics activities), for joint trigger test.
    • >=2 persons(mechanical activities), for IsCMOS fiber and taper aligment.
  2. the beam running stage
    • >=2 persons(mechanical activities), to switch ND filter, a few hours job.
    • >=3 persons(electronics activities, at least 1 person on site real-time), full cover the test period, for IsCMOS HV operation.
    • >=6 persons(mechanical and electronics activities, 2 persons on site real-time), for general structure operation, calibration operation, trigger DAQ operation, TRD access.
  3. finishing stage
    • >= 4 persons(mechanical activities), for the immediate crystal array re-packing job.
    • for other de-install job, manpower is not a problem since we're not in a hurry.

  -- xu ming - 2021-07-17

Revision 42021-07-18 - XuMing

Line: 1 to 1
 
META TOPICPARENT name="HERDContent"

Travel issue

Line: 19 to 19
 A summary table could be found as following.

-- xu ming - 2021-07-17

Deleted:
<
<
META FILEATTACHMENT attachment="BeamTestRemotely20210706_sum.xlsx" attr="" comment="" date="1626494575" name="BeamTestRemotely20210706_sum.xlsx" path="BeamTestRemotely20210706_sum.xlsx" size="13384" user="mingxu" version="1"

Revision 32021-07-17 - XuMing

Line: 1 to 1
 
META TOPICPARENT name="HERDContent"

Travel issue

Line: 12 to 12
 The probabilities of Chinese colleagues could be present on beam site is limited, due to the local administration regulations and the CERN host states policies.

There're two options if we follow the current beam schedule without cancellations.

Changed:
<
<
  • full prototype tests. The European colleagues take full operation of each sub-detector while the Chinese colleagues will participant online remotely.
>
>
  • full prototype tests. The European colleagues take full operation of each sub-detector while the Chinese colleagues will participant online remotely.
 
  • absent of hardwares from China, includes the crystal array, TRD, global trigger system and general support structure.

Discussion of the alternate actions

A summary table could be found as following.

Deleted:
<
<
  Items Action list remotely Remark
operation needed
Operation necessary after shippment or not Difficulty level (Extremely, hard, advanced, tricky, easy) On-site manpower needed Training time needed On-site Chinese needed or not
Crystal array special packing Disassemble the special packing plate before beam and assemble them after beam disassemble and assemble necessary easy 4
(at the assembly and packing stage)
< 1 day no
calibration scan the LYSO array by taking use the global table beam operation and synchronization not necessary easy 2
(real-time operation during test)
< 1 day no
Trigger system joint test about DI2C synchronization protocol and hardware update firmware remotely hardware/parameter tuning,
beam operation and synchronization
not necessary. Only connect the cables between the trigger system and the sub-systems easy 0 The hardware and firmware ot the sub-system should be ready before integration test probably
swith neutral filter if the singal intsnsity is not appropriate, disassemble the trigger box, switch the neutral filter with a new one and then coupled with the trigger PMT disassemble and assemble, cable connections disassemble and assemble the structure needed,probably. Operations needed after the first few runs hard 2
(opration once or twice at the beginning of the test)
disassemble and assemble the structure needed,probably probably
backward calibration mute the beam and then send command to the trigger system beam operation and synchronization not necessary tricky can overlap with H3 <1 day. A manual will guide the DAQ procedure no
IsCMOS camera optical fiber taper Due to the inevitable vibration of transportation, there is a position deviation between the fine installation interfaces. It is supposed to fine tune(10um accuracy) the positions between the optical fiber taper and fiber panel after the arrival of equipments at CERN. complicated instructions and manuals for such kind of alignment operation. necessary extremely >=2
(at the assembly stage)
there is NOT a 'standard' procedure. The XIOPM senior engineers is trying to figure out a possible solution for remote guidance solution needed
power supply system The power supply system of the camera is quite complicated, any kind of mis-operation will damage the camera. Once we were able to redesign the power supply system, we may reduce such a risk. Even if the redesign is technically feasible, it seems that the progress is still a problem. well trained seniors will be necessary for the power control necessary hard >= 3 elecronic engineers
(full cover the whole week of the test)
4 days no
acquisition card and storage server It is feasible to use the data acquisition and storage system remotely. computing setup, cable connections necessary tricky 2
(at the assembly stage)
2 days no
TRD detector Detector chamber gas leak detection Connect the detector pressure sensor interface to the computer to check whether the detector chamber is leaking. If the detector chamber leaks, connect the detector to the flow circuit; if there is no leak or the leak rate meets the requirements, the closed-gas detector is still used for testing. disassemble and assemble,
real-time on site monitoring,
cable connections
no easy 1
(at the assembly stage)
< 1 day no
Detector interface connection Refer to the pre-prepared detector interface connection document and remote communication to connect the detector's high-voltage line, front-end electronics, back-end electronics, and computer. harware cable connections no easy 1
(at the assembly stage)
overlap with H10
< 1 day no
Noise reduction Because noise reduction is relatively complicated, need remote communication proceed to noise reduction. hardware/parameter tuning no tricky overlap with H10 real time guidence during the test no
Beam test access For DAQ, we can remotely connect to the computer to perform beam fetching operations. computing no easy 1
(real-time operation during test)
can overlap with H3
< 1 day no
General structure platform Assemble seven platforms to the common platform on site ,testing all function of each platform.take out all deveices form packing box , install them on their platform ,adjust each platform to align the beam disassemble and assemble assemble all parts together tricky 2+2
(2 for the global table mechanical installation, the other 2 for the remote control electronics setup, at the assembly stage)
2 days no
packing box open the packing box before test and pack up all deveices after test, fix the packing box lid disassemble and assemble dismountiong all the scrws uesd to fix the cover easy 4, can overlap with H2
(at the assembly and packing stage)
< 1 day no

 -- xu ming - 2021-07-17

META FILEATTACHMENT attachment="BeamTestRemotely20210706_sum.xlsx" attr="" comment="" date="1626494575" name="BeamTestRemotely20210706_sum.xlsx" path="BeamTestRemotely20210706_sum.xlsx" size="13384" user="mingxu" version="1"

Revision 22021-07-17 - XuMing

Line: 1 to 1
 
META TOPICPARENT name="HERDContent"
Changed:
<
<

Intro

>
>

Travel issue

 
Changed:
<
<
The High Energy cosmic-Radiation Detection (HERD) facility is one of several space astronomy payloads of the cosmic light house program onboard China's Space Station, which is planned for operation starting around 2020 for about 10 years. The main scientific objectives of HERD are indirect dark matter search, precise cosmic ray spectrum and composition measurements up to the knee energy, and high energy gamma-ray monitoring and survey.
>
>
Beam schedule could be found at the beam coordination page.
 
Changed:
<
<
The HERD beam test at CERN is dedicated to verify the design of a 3-d and five-side sensitive calorimeter, the feasibility of WLSF + ICCD reading-out scheme. The energy resolution of electrons and protons, the angular resolution of electrons and the e/p separation capability will be measured by use of the CERN beam.
>
>
For HERD, its:
  • at SPS H4, from Oct. 13rd to Oct. 20th.
  • at PS T9, from Nov. 1st to Nov. 7th.
 
Changed:
<
<
Collaborators of the test beam are from:
* University of Perugia/INFN, Italy
* University of Bari/INFN, Italy
* University of Salento/INFN-Lecce, Italy
* University of Geneva, Switzerland
* Institute of High Energy Physics, China
* Xi’an Institute of Optical and Precision Mechanics, China
---++++ Before the Beam
>
>
The probabilities of Chinese colleagues could be present on beam site is limited, due to the local administration regulations and the CERN host states policies.
 
Changed:
<
<
The CALO+ICCD protoype is scheduled to arrive CERN at least one week before the beam time. There are about fifteen participants from China, five of them (mechanical engineer, ICCD DAQ expert, electronics expert and contact person ) will arrival with the prototype, and the rest will arrival two days before the beam time. Ming will guide Chinese collaborators for the registration, dosimetry service. And power-on self-check and basic CR test and necessary adjustment of the prototype will be accomplished within the week. (including preliminary integration and test of scintillator trigger, sillicon ladder and calorimeter at the same time?).
---++++ Beam Time
>
>
There're two options if we follow the current beam schedule without cancellations.
  • full prototype tests. The European colleagues take full operation of each sub-detector while the Chinese colleagues will participant online remotely.
  • absent of hardwares from China, includes the crystal array, TRD, global trigger system and general support structure.

Discussion of the alternate actions

 
Changed:
<
<
The beam time for HERD is from 11-Nov to 20-Nov refer to the the beam schedule issued on 01-Sep-2015.
>
>
A summary table could be found as following.
 
Changed:
<
<
There are two kinds of run during the beam time: 11-Nov to 16-Nov, proton run; 16-Nov to 20-Nov, Pb run.
>
>
  Items Action list remotely Remark
operation needed
Operation necessary after shippment or not Difficulty level (Extremely, hard, advanced, tricky, easy) On-site manpower needed Training time needed On-site Chinese needed or not
Crystal array special packing Disassemble the special packing plate before beam and assemble them after beam disassemble and assemble necessary easy 4
(at the assembly and packing stage)
< 1 day no
calibration scan the LYSO array by taking use the global table beam operation and synchronization not necessary easy 2
(real-time operation during test)
< 1 day no
Trigger system joint test about DI2C synchronization protocol and hardware update firmware remotely hardware/parameter tuning,
beam operation and synchronization
not necessary. Only connect the cables between the trigger system and the sub-systems easy 0 The hardware and firmware ot the sub-system should be ready before integration test probably
swith neutral filter if the singal intsnsity is not appropriate, disassemble the trigger box, switch the neutral filter with a new one and then coupled with the trigger PMT disassemble and assemble, cable connections disassemble and assemble the structure needed,probably. Operations needed after the first few runs hard 2
(opration once or twice at the beginning of the test)
disassemble and assemble the structure needed,probably probably
backward calibration mute the beam and then send command to the trigger system beam operation and synchronization not necessary tricky can overlap with H3 <1 day. A manual will guide the DAQ procedure no
IsCMOS camera optical fiber taper Due to the inevitable vibration of transportation, there is a position deviation between the fine installation interfaces. It is supposed to fine tune(10um accuracy) the positions between the optical fiber taper and fiber panel after the arrival of equipments at CERN. complicated instructions and manuals for such kind of alignment operation. necessary extremely >=2
(at the assembly stage)
there is NOT a 'standard' procedure. The XIOPM senior engineers is trying to figure out a possible solution for remote guidance solution needed
power supply system The power supply system of the camera is quite complicated, any kind of mis-operation will damage the camera. Once we were able to redesign the power supply system, we may reduce such a risk. Even if the redesign is technically feasible, it seems that the progress is still a problem. well trained seniors will be necessary for the power control necessary hard >= 3 elecronic engineers
(full cover the whole week of the test)
4 days no
acquisition card and storage server It is feasible to use the data acquisition and storage system remotely. computing setup, cable connections necessary tricky 2
(at the assembly stage)
2 days no
TRD detector Detector chamber gas leak detection Connect the detector pressure sensor interface to the computer to check whether the detector chamber is leaking. If the detector chamber leaks, connect the detector to the flow circuit; if there is no leak or the leak rate meets the requirements, the closed-gas detector is still used for testing. disassemble and assemble,
real-time on site monitoring,
cable connections
no easy 1
(at the assembly stage)
< 1 day no
Detector interface connection Refer to the pre-prepared detector interface connection document and remote communication to connect the detector's high-voltage line, front-end electronics, back-end electronics, and computer. harware cable connections no easy 1
(at the assembly stage)
overlap with H10
< 1 day no
Noise reduction Because noise reduction is relatively complicated, need remote communication proceed to noise reduction. hardware/parameter tuning no tricky overlap with H10 real time guidence during the test no
Beam test access For DAQ, we can remotely connect to the computer to perform beam fetching operations. computing no easy 1
(real-time operation during test)
can overlap with H3
< 1 day no
General structure platform Assemble seven platforms to the common platform on site ,testing all function of each platform.take out all deveices form packing box , install them on their platform ,adjust each platform to align the beam disassemble and assemble assemble all parts together tricky 2+2
(2 for the global table mechanical installation, the other 2 for the remote control electronics setup, at the assembly stage)
2 days no
packing box open the packing box before test and pack up all deveices after test, fix the packing box lid disassemble and assemble dismountiong all the scrws uesd to fix the cover easy 4, can overlap with H2
(at the assembly and packing stage)
< 1 day no

-- xu ming - 2021-07-17
 
Changed:
<
<
Note that the technical stop is NOT as usual (usually the slot is 10 hours form 08h to 18h in the same day). The techical stop is 24 hours for the proton run and 34 hours for the Pb run, which means the valid beam time is shorter than expected.

<img alt="_2015-09-07_3.27.42.png" height="501" src="http://twiki.ihep.ac.cn/pub/Sandbox/TestTopic3293/_2015-09-07_3.27.42.png" title="_2015-09-07_3.27.42.png" width="807" />

CALO and ICCD

The HERD prototype is composed of 250 LYSO crystals, two ICCDs and two trigger PMTs. Each crystal with a dimension of 3*3*3 cm3 is contained in a CFRP grid. The space between crystals is controlled not to be larger than 3/5 mm in the horizontal/vertical direction. The 5*5*10 crystal array is designed to have the full shape of shower of SPS electrons contained in. So the main purpose of verifying the specification of electron's energy resolution can be reached. Two ICCDs, each having the capability of fast and weak light imaging, is taken use of to meet the requirement of large dynamic range from 1 MIP to 2000 MIPs. Each crystal is coupled with two WLS fibers. One fiber acting as low-range fiber has a single-end output to the low-range ICCD. While both ends of the other fiber are led out and read out by the high-range ICCD and trigger PMTs respectively. The ratio in amplitude between low and high range fibers is about 40 to 1. About 12*12 pixels on the CCD chip are allocated to one WLS fiber. So the energy deposition in the calorimeter can be derived by a 2-d image which includes 250 separate faculas.

The HERD trigger system consisting of two PMTs is mainly dedicated to the verification of energy measurement capability of ICCDs. While it is not designed to give triggers to the ICCDs. The trigger signal from the PS trigger system goes through the HERD trigger system before being input to the ICCDs. 249 out of 250 trigger fibers are coupled to one trigger PMT and the trigger fiber from the center crystal is read out by one separate PMT.

* HERD prototype: <br /> <img alt="IMG_0164.JPG" src="/pub/HERD/BT2021/IMG_0164.JPG" width="400" /></verbatim>

Plastic Scintillator Trigger System

The PS system consists of at least 4 plastic scintillators. One large area PS and two smaller PS with an area of 4*4 cm2 act as concidence detectors, the other large area PS with a hole acts as the anti-coincidence detector. The trigger signal from the PS system will be broadcasted to all the other systems, and the PS trigger no. will be recorded in the data files of all systems.

Please update...
---++++ Silicon Tracking System

<img alt="HERDBT_pic.png" src="http://twiki.ihep.ac.cn/pub/HERD/BT2021/HERDBT_pic.png" />

<img alt="HERDBT_geom.png" src="http://twiki.ihep.ac.cn/pub/HERD/BT2021/HERDBT_geom.png" />

For this BT the ladders are named, from the most upward to the closer to ICC: 0, 4, 8, 12, 14 (see Cluster.address). The ladder '12' had some problems so can be used just with the ion beam.

The Silicon Tracking System is based on the AMS silicon ladder detectors:

*Pitch*
* 110 μm for S-side (junction side) (X) (vertical at this BT)
* 208 μm for K-side (ohmic side) (Y) (horizontal at this BT)
* 1392 μm from last K-side strip on one silicon wafer to the first of the next one

Papers:
* The internal alignment and position resolution of the AMS-02 silicon tracker determined with cosmic-ray muons
* The alpha magnetic spectrometer silicon tracker: Performance results with protons and helium nuclei

Infos in the TTree:

The 'Event' contains few general informations and a container of all the clusters found with the zero suppression. Each Cluster has these raw informations:
* Cluster.address: address (in unit of strip number, of the first strip in the cluster). The address for cluster on the S-side (or p-side, or Y coo) are ranging from 0-639. For K-side (or n-side, or X coo) are ranging from 640 to 1023.
* Cluster.length: lenght (in unit of number of strips) of the cluster. Lenght=N means that the cluster is formed by the signals form N strips
* Cluster.Signal[50]: signal value for the first min(50,lenght) strips in the cluster
* Cluster.Noise[50]: noise value for the first min(50,lenght) strips in the cluster. This value is determined just during calibration so the very same channel, in the same run has the very same noise value. This can be used to evaluate the S/N ratio and apply a quality cut on it (strip by strip forming the ladder)
* Cluster.Status[50]: not used
* Cluster.ladder: number ID of the ladder to which the cluster belongs. For this BT the ladders were, from the most upward to the closer to ICC: 0, 4, 8, 12, 14.
* Cluster.side: the side of the ladder in which there's the cluster. side=0 means S-side, side=1 means K-side. This information is essentially redundant wrt to the address.
* Cluster.bad: not used
* Cluster.golden: not used
* Cluster.snratios: S/N for the whole cluster
* Cluster.CNstatus: not used
* Cluster.powbits: not used
---++++ Integration and Synchronize

The ICCD system, HERD trigger system, PS system and STK system are involved in the HERD beam test at CERN.

* HERD_SPS_test_trigger_map151024.jpg: <br /> <img alt="HERD_SPS_test_trigger_map151024.jpg" src="/pub/HERD/BT2021/HERD_SPS_test_trigger_map151024.jpg" width="600" /></verbatim>

Please update...
---++++ Instrument Support Platform

CALO+ICCD system will be placed on the top of GOLIATH in PPE134/H4. The Plastic scintillator and Silicon ladder will be placed on the platform used for DAMPE test beam at BAT.887.
---++++ Hardware Contibution

The crystal array and HERD trigger system are designed and developed in IHEP.

The two ICCD systems are contributed by XIOPM colleagues.

Please update...
---++++ Software Contibution

The Raw data from the two ICCDs is compressed and transfered to ROOT file in nearly real time. All the ROOT files are to be uploaded through internet cables to the laptop in the control room (and to the CERN server through WIFI or to be copied to a common computer by USB disk). The data of HERD trigger system will be processed in the same way.

ROOT files from all the four systems will be jointly analyzed to verify the working conditions of the beam and the systems.

* Network in HERD SPS test: <br /> <img alt="Network_in_HERD_SPS_test.jpg" src="/pub/HERD/BT2021/Network_in_HERD_SPS_test.jpg" width="500" /></verbatim>

Please update...
---++++ Following Events

The next vidyo meeting will be held on 4-Nov, 09h Europe time and 16h Beijing time respectively.

The next HERD Collaboration meeting will be held in January or early February of 2016 in Xi'an, China. The summing-up of the HERD beam test together with the future working plan will be discussed.

Logistics

Collaborators from China prefered to live in PREVESSIN-MOENS-Residhome and rent several cars from CERN/company at Ferney-Voltaire.

A group of 4 IHEP people will arrive at CERN on Nov. 2nd. The other IHEP people will be at CERN on Nov. 7th.

...

-- MingXu - 2015-09-21

>
>
META FILEATTACHMENT attachment="BeamTestRemotely20210706_sum.xlsx" attr="" comment="" date="1626494575" name="BeamTestRemotely20210706_sum.xlsx" path="BeamTestRemotely20210706_sum.xlsx" size="13384" user="mingxu" version="1"

Revision 12021-07-15 - XuMing

Line: 1 to 1
Added:
>
>
META TOPICPARENT name="HERDContent"

Intro

The High Energy cosmic-Radiation Detection (HERD) facility is one of several space astronomy payloads of the cosmic light house program onboard China's Space Station, which is planned for operation starting around 2020 for about 10 years. The main scientific objectives of HERD are indirect dark matter search, precise cosmic ray spectrum and composition measurements up to the knee energy, and high energy gamma-ray monitoring and survey.

The HERD beam test at CERN is dedicated to verify the design of a 3-d and five-side sensitive calorimeter, the feasibility of WLSF + ICCD reading-out scheme. The energy resolution of electrons and protons, the angular resolution of electrons and the e/p separation capability will be measured by use of the CERN beam.

Collaborators of the test beam are from:
* University of Perugia/INFN, Italy
* University of Bari/INFN, Italy
* University of Salento/INFN-Lecce, Italy
* University of Geneva, Switzerland
* Institute of High Energy Physics, China
* Xi’an Institute of Optical and Precision Mechanics, China
---++++ Before the Beam

The CALO+ICCD protoype is scheduled to arrive CERN at least one week before the beam time. There are about fifteen participants from China, five of them (mechanical engineer, ICCD DAQ expert, electronics expert and contact person ) will arrival with the prototype, and the rest will arrival two days before the beam time. Ming will guide Chinese collaborators for the registration, dosimetry service. And power-on self-check and basic CR test and necessary adjustment of the prototype will be accomplished within the week. (including preliminary integration and test of scintillator trigger, sillicon ladder and calorimeter at the same time?).
---++++ Beam Time

The beam time for HERD is from 11-Nov to 20-Nov refer to the the beam schedule issued on 01-Sep-2015.

There are two kinds of run during the beam time: 11-Nov to 16-Nov, proton run; 16-Nov to 20-Nov, Pb run.

Note that the technical stop is NOT as usual (usually the slot is 10 hours form 08h to 18h in the same day). The techical stop is 24 hours for the proton run and 34 hours for the Pb run, which means the valid beam time is shorter than expected.

<img alt="_2015-09-07_3.27.42.png" height="501" src="http://twiki.ihep.ac.cn/pub/Sandbox/TestTopic3293/_2015-09-07_3.27.42.png" title="_2015-09-07_3.27.42.png" width="807" />

CALO and ICCD

The HERD prototype is composed of 250 LYSO crystals, two ICCDs and two trigger PMTs. Each crystal with a dimension of 3*3*3 cm3 is contained in a CFRP grid. The space between crystals is controlled not to be larger than 3/5 mm in the horizontal/vertical direction. The 5*5*10 crystal array is designed to have the full shape of shower of SPS electrons contained in. So the main purpose of verifying the specification of electron's energy resolution can be reached. Two ICCDs, each having the capability of fast and weak light imaging, is taken use of to meet the requirement of large dynamic range from 1 MIP to 2000 MIPs. Each crystal is coupled with two WLS fibers. One fiber acting as low-range fiber has a single-end output to the low-range ICCD. While both ends of the other fiber are led out and read out by the high-range ICCD and trigger PMTs respectively. The ratio in amplitude between low and high range fibers is about 40 to 1. About 12*12 pixels on the CCD chip are allocated to one WLS fiber. So the energy deposition in the calorimeter can be derived by a 2-d image which includes 250 separate faculas.

The HERD trigger system consisting of two PMTs is mainly dedicated to the verification of energy measurement capability of ICCDs. While it is not designed to give triggers to the ICCDs. The trigger signal from the PS trigger system goes through the HERD trigger system before being input to the ICCDs. 249 out of 250 trigger fibers are coupled to one trigger PMT and the trigger fiber from the center crystal is read out by one separate PMT.

* HERD prototype: <br /> <img alt="IMG_0164.JPG" src="/pub/HERD/BT2021/IMG_0164.JPG" width="400" /></verbatim>

Plastic Scintillator Trigger System

The PS system consists of at least 4 plastic scintillators. One large area PS and two smaller PS with an area of 4*4 cm2 act as concidence detectors, the other large area PS with a hole acts as the anti-coincidence detector. The trigger signal from the PS system will be broadcasted to all the other systems, and the PS trigger no. will be recorded in the data files of all systems.

Please update...
---++++ Silicon Tracking System

<img alt="HERDBT_pic.png" src="http://twiki.ihep.ac.cn/pub/HERD/BT2021/HERDBT_pic.png" />

<img alt="HERDBT_geom.png" src="http://twiki.ihep.ac.cn/pub/HERD/BT2021/HERDBT_geom.png" />

For this BT the ladders are named, from the most upward to the closer to ICC: 0, 4, 8, 12, 14 (see Cluster.address). The ladder '12' had some problems so can be used just with the ion beam.

The Silicon Tracking System is based on the AMS silicon ladder detectors:

*Pitch*
* 110 μm for S-side (junction side) (X) (vertical at this BT)
* 208 μm for K-side (ohmic side) (Y) (horizontal at this BT)
* 1392 μm from last K-side strip on one silicon wafer to the first of the next one

Papers:
* The internal alignment and position resolution of the AMS-02 silicon tracker determined with cosmic-ray muons
* The alpha magnetic spectrometer silicon tracker: Performance results with protons and helium nuclei

Infos in the TTree:

The 'Event' contains few general informations and a container of all the clusters found with the zero suppression. Each Cluster has these raw informations:
* Cluster.address: address (in unit of strip number, of the first strip in the cluster). The address for cluster on the S-side (or p-side, or Y coo) are ranging from 0-639. For K-side (or n-side, or X coo) are ranging from 640 to 1023.
* Cluster.length: lenght (in unit of number of strips) of the cluster. Lenght=N means that the cluster is formed by the signals form N strips
* Cluster.Signal[50]: signal value for the first min(50,lenght) strips in the cluster
* Cluster.Noise[50]: noise value for the first min(50,lenght) strips in the cluster. This value is determined just during calibration so the very same channel, in the same run has the very same noise value. This can be used to evaluate the S/N ratio and apply a quality cut on it (strip by strip forming the ladder)
* Cluster.Status[50]: not used
* Cluster.ladder: number ID of the ladder to which the cluster belongs. For this BT the ladders were, from the most upward to the closer to ICC: 0, 4, 8, 12, 14.
* Cluster.side: the side of the ladder in which there's the cluster. side=0 means S-side, side=1 means K-side. This information is essentially redundant wrt to the address.
* Cluster.bad: not used
* Cluster.golden: not used
* Cluster.snratios: S/N for the whole cluster
* Cluster.CNstatus: not used
* Cluster.powbits: not used
---++++ Integration and Synchronize

The ICCD system, HERD trigger system, PS system and STK system are involved in the HERD beam test at CERN.

* HERD_SPS_test_trigger_map151024.jpg: <br /> <img alt="HERD_SPS_test_trigger_map151024.jpg" src="/pub/HERD/BT2021/HERD_SPS_test_trigger_map151024.jpg" width="600" /></verbatim>

Please update...
---++++ Instrument Support Platform

CALO+ICCD system will be placed on the top of GOLIATH in PPE134/H4. The Plastic scintillator and Silicon ladder will be placed on the platform used for DAMPE test beam at BAT.887.
---++++ Hardware Contibution

The crystal array and HERD trigger system are designed and developed in IHEP.

The two ICCD systems are contributed by XIOPM colleagues.

Please update...
---++++ Software Contibution

The Raw data from the two ICCDs is compressed and transfered to ROOT file in nearly real time. All the ROOT files are to be uploaded through internet cables to the laptop in the control room (and to the CERN server through WIFI or to be copied to a common computer by USB disk). The data of HERD trigger system will be processed in the same way.

ROOT files from all the four systems will be jointly analyzed to verify the working conditions of the beam and the systems.

* Network in HERD SPS test: <br /> <img alt="Network_in_HERD_SPS_test.jpg" src="/pub/HERD/BT2021/Network_in_HERD_SPS_test.jpg" width="500" /></verbatim>

Please update...
---++++ Following Events

The next vidyo meeting will be held on 4-Nov, 09h Europe time and 16h Beijing time respectively.

The next HERD Collaboration meeting will be held in January or early February of 2016 in Xi'an, China. The summing-up of the HERD beam test together with the future working plan will be discussed.

Logistics

Collaborators from China prefered to live in PREVESSIN-MOENS-Residhome and rent several cars from CERN/company at Ferney-Voltaire.

A group of 4 IHEP people will arrive at CERN on Nov. 2nd. The other IHEP people will be at CERN on Nov. 7th.

...

-- MingXu - 2015-09-21

 
This site is powered by the TWiki collaboration platform Powered by PerlCopyright © 2008-2022 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback