Difference between revisions of "JEF meeting, November 1, 2024"
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* Implementing ECAL into the GlueX DAQ [https://logbooks.jlab.org/entry/4316928] | * Implementing ECAL into the GlueX DAQ [https://logbooks.jlab.org/entry/4316928] | ||
:: - rocecal3 crate was fixed [https://logbooks.jlab.org/entry/4317415] (initial DAQ implementation [https://logbooks.jlab.org/entry/4316928]) | :: - rocecal3 crate was fixed [https://logbooks.jlab.org/entry/4317415] (initial DAQ implementation [https://logbooks.jlab.org/entry/4316928]) | ||
| − | :: - implementing flash ADC scalers [https://logbooks.jlab.org/entry/4319280][https://logbooks.jlab.org/entry/4319672 | + | :: - implementing flash ADC scalers [https://logbooks.jlab.org/entry/4319280][https://logbooks.jlab.org/entry/4319672] |
:: - translation table for the ECAL (finalize/check translation DB, generate xml file, import to the CCDB) - done [https://logbooks.jlab.org/entry/4317904] | :: - translation table for the ECAL (finalize/check translation DB, generate xml file, import to the CCDB) - done [https://logbooks.jlab.org/entry/4317904] | ||
:: - implementing and verifying ECAL LMS trigger [https://logbooks.jlab.org/entry/4317903] | :: - implementing and verifying ECAL LMS trigger [https://logbooks.jlab.org/entry/4317903] | ||
| Line 29: | Line 29: | ||
* [https://halldweb.jlab.org/detectors/fcal2/installation/safety_docs/safety.jpg Safety briefings] - Vlad, Sasha | * [https://halldweb.jlab.org/detectors/fcal2/installation/safety_docs/safety.jpg Safety briefings] - Vlad, Sasha | ||
* [https://halldweb.jlab.org/wiki/index.php/FCAL_Installation Detector installation page] | * [https://halldweb.jlab.org/wiki/index.php/FCAL_Installation Detector installation page] | ||
| − | * Installation of temporary HV distribution boards and testing flash ADC scalers [https://logbooks.jlab.org/entry/4319280][https://logbooks.jlab.org/entry/4319672] | + | * Installation of temporary HV distribution boards and testing flash ADC scalers [https://logbooks.jlab.org/entry/4319280][https://logbooks.jlab.org/entry/4319672][https://logbooks.jlab.org/entry/4320378] |
* [https://halldweb.jlab.org/wiki/index.php/FCAL2_Meetings FCAL2 Engineering Meetings] | * [https://halldweb.jlab.org/wiki/index.php/FCAL2_Meetings FCAL2 Engineering Meetings] | ||
* Remaining installation tasks | * Remaining installation tasks | ||
| Line 45: | Line 45: | ||
'''Analysis/Simulation''' | '''Analysis/Simulation''' | ||
| − | :: | + | :: Update from Zhikun [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/11_01_2024] |
<!-- :: [https://halldweb.jlab.org/DocDB/0066/006667/001/Update-Oct17.pdf Laveen Update] --> | <!-- :: [https://halldweb.jlab.org/DocDB/0066/006667/001/Update-Oct17.pdf Laveen Update] --> | ||
''' Presentation at IEEE ''' [https://halldweb.jlab.org/detectors/fcal2/] | ''' Presentation at IEEE ''' [https://halldweb.jlab.org/detectors/fcal2/] | ||
:: Conference trip was not supported by Hall D | :: Conference trip was not supported by Hall D | ||
| + | |||
| + | =Minutes= | ||
| + | Attendees: Sasha, Liping, Igal, Xiaolin, Laveen, Olga, Vlad, Phil, Axel, Jane, Zhikun, S.T. | ||
| + | * No news on HV boxes, still expect November 18 delivery | ||
| + | ** Using 2 temporary boxes allowing checking 1/2 ECAL | ||
| + | *** Read out flash-ADC scalers using LED light source at 500 Hz | ||
| + | **** Found several holes due to slightly disconnected dividers, now fixed | ||
| + | **** Some problems appear to be due to jostling of chains (maybe need more than velcro to tie together? Metal rods?) | ||
| + | **** Found swapped cables | ||
| + | **** Found bad connector on PCB | ||
| + | **** One problem with LV distribution: baseline shift | ||
| + | ** Checking other 1/2 will have to wait for real HV box/board solution | ||
| + | * Using 2 chillers keeping temperature at 19 C to avoid condensation | ||
| + | ** Need to check temperature stability | ||
| + | ** Blow air on ECAL dividers | ||
| + | ** Will install dehumidier(s) | ||
| + | * LMS: working on increasing light output -- would like to increase 10x | ||
| + | ** Considering whether or not we need integrating sphere | ||
| + | ** Inject light directly? Working on alternate solution with small aperture LEDs | ||
| + | * Work to begin on infrastructure for reference PMT + radioactive source | ||
| + | * DAQ: next step is to start reading out waveforms | ||
| + | * Zhikun showed hit occupancy plot for FCAL-2 using simulated muon events | ||
| + | * Discussed plans for beam tests using PS | ||
| + | ** 5x5 array lead glass + 5x5 array lead tungstate (have spares, can reuse ComCal box) | ||
| + | ** Measure position resolution with 5x5 lead tungstate array? | ||
| + | * Hakob willing to come in January to help maintain detector, maybe work on veto prototype? | ||
Latest revision as of 14:10, 4 November 2024
Connection
Meeting time and location:
- 9:30 am EST (JLab time) remote only
- Connection information
Agenda
Preparation of parts for ECAL -- Sasha
- - Connectors and cables were installed on the PCBs of 2 HV distribution boards. Sammy and Chris are working on the third board, it will likely be ready during next week (Sammy also works on GEM/TRD)
- - Boxes for HV boards have been just been ordered. Expected delivery date 11/15/2024.
- - Vince P. has machined parts for two temporary distribution boards. Two temporary HV distribution boards were assembled. The holes for connectors were too narrow, the tech group fixed it.
- - Have received all parts for the new version of the LMS light source
Installation of the FCAL2 detector & integration to GlueX -- Sasha, All
- Installation of the light distribution board of the ECAL LMS [3]
- - Vlad P. has slightly modified the design of the LMS light source in order to increase the amount of light. Chris S. is working on a new board with 9 LEDs.
- Implementing ECAL into the GlueX DAQ [4]
- - rocecal3 crate was fixed [5] (initial DAQ implementation [6])
- - implementing flash ADC scalers [7][8]
- - translation table for the ECAL (finalize/check translation DB, generate xml file, import to the CCDB) - done [9]
- - implementing and verifying ECAL LMS trigger [10]
- - implementing and verifying the ECAL physics trigger. First event reconstructed using the GlueX software [11]
- - Start implementing VTP trigger modules. Requires modification of firmware. The trigger crates may be unavailable for 1 - 1.5 months.
- - The VTP was installed in the D2-1-TOP crate, IP address assigned, and can be booted now
- Installation of scintillating paddles for cosmic tests [12] [13][14]
- ECAL HV interlock check [15]
- Cable map of the ECAL LG modules after installing ECAL [16]
- Reinstalling cables on the ECAL LV distribution board [17]
- Safety briefings - Vlad, Sasha
- Detector installation page
- Installation of temporary HV distribution boards and testing flash ADC scalers [18][19][20]
- FCAL2 Engineering Meetings
- Remaining installation tasks
- - Connecting cooling pipes to the ECAL fan (done by tech group)
- - Installing dark room ceiling and insulation inside the room, required for cooling test (almost complete)
- - Test cooling system (in progress, almost complete)
- - Installing HV distribution boards, start switching the detector ON (waiting for HV boxes)
Restoring PS test setup [21]
ECAL commissioning -- Sasha, All
Calibrations
Analysis/Simulation
- Update from Zhikun [22]
Presentation at IEEE [23]
- Conference trip was not supported by Hall D
Minutes
Attendees: Sasha, Liping, Igal, Xiaolin, Laveen, Olga, Vlad, Phil, Axel, Jane, Zhikun, S.T.
- No news on HV boxes, still expect November 18 delivery
- Using 2 temporary boxes allowing checking 1/2 ECAL
- Read out flash-ADC scalers using LED light source at 500 Hz
- Found several holes due to slightly disconnected dividers, now fixed
- Some problems appear to be due to jostling of chains (maybe need more than velcro to tie together? Metal rods?)
- Found swapped cables
- Found bad connector on PCB
- One problem with LV distribution: baseline shift
- Read out flash-ADC scalers using LED light source at 500 Hz
- Checking other 1/2 will have to wait for real HV box/board solution
- Using 2 temporary boxes allowing checking 1/2 ECAL
- Using 2 chillers keeping temperature at 19 C to avoid condensation
- Need to check temperature stability
- Blow air on ECAL dividers
- Will install dehumidier(s)
- LMS: working on increasing light output -- would like to increase 10x
- Considering whether or not we need integrating sphere
- Inject light directly? Working on alternate solution with small aperture LEDs
- Work to begin on infrastructure for reference PMT + radioactive source
- DAQ: next step is to start reading out waveforms
- Zhikun showed hit occupancy plot for FCAL-2 using simulated muon events
- Discussed plans for beam tests using PS
- 5x5 array lead glass + 5x5 array lead tungstate (have spares, can reuse ComCal box)
- Measure position resolution with 5x5 lead tungstate array?
- Hakob willing to come in January to help maintain detector, maybe work on veto prototype?
![[1]](https://halldweb.jlab.org/detectors/fcal2/installation/meetings/08_09_2024/hv_board1.jpg){kind=link}
![[2]](https://halldweb.jlab.org/detectors/fcal2/installation/meetings/08_09_2024/hv_board2.jpg){kind=link}
![[21]](https://halldweb.jlab.org/detectors/fcal2/installation/meetings/08_09_2024/ps_setup.jpg){kind=link}