Difference between revisions of "JEF meeting, January 13, 2022"
From GlueXWiki
(Created page with "Meeting time and location: *9:30 am EST (JLab time) remote only *Zoom meeting ID: [https://jlab-org.zoomgov.com/j/1610509142?pwd=STNZUmNoMElqbHRVdjlVb0ZzR1piZz09 161 050 9142]...") |
|||
(3 intermediate revisions by 2 users not shown) | |||
Line 6: | Line 6: | ||
*'''Preparation of parts for FCAL2 modules''' -- Sasha | *'''Preparation of parts for FCAL2 modules''' -- Sasha | ||
+ | ** Received all 150 CRYTUR crystals from physics division (22-C0275) [https://halldweb.jlab.org/wiki/index.php/CRYTUR ] | ||
+ | *** Expect to receive 95 more CRYTUR crystals in May (835 + 95 = 930 in total) | ||
+ | **[https://halldweb.jlab.org/detectors/fcal2/module_fabrication/wrapped/wrapped_crytur.pdf Wrapped CRYTUR crystals: 835 (ALL available CRYTUR) ] | ||
+ | *** 10 crystals wrapped since last meeting | ||
+ | *** Available for wrapping: 10 CRYTUR crystals, 140 SICCAS crystals from CCAL | ||
+ | *** Mindy (DSG group) continues wrapping crystals and soldering wires to sockets | ||
+ | ** Disassembling CCAL | ||
+ | *** CCAL moved to the ESB | ||
+ | *** [[All modules (with SICCAS crystals) are removed]] | ||
+ | ** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/part_preparation.pdf List of available parts] | ||
* '''Module fabrication''' -- Sasha | * '''Module fabrication''' -- Sasha | ||
− | * '''Testing of PMT dividers''' -- Sasha / Arshak | + | <!-- ** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/fcal_fabrication.pdf Status of fabrication ] --> |
+ | ** Fabricated modules: <span style="color:#FF0000"> Total 1408 </span> (12 modules fabricated since last week) | ||
+ | *** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/module_fabrication.pdf All SICCAS 576 SICCAS] | ||
+ | *** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/module_fabrication_crytur.pdf 832 CRYTUR], available: 3 | ||
+ | *** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/11_11_22 Moving modules to the new lab (EEL108)] | ||
+ | * '''[[Testing of PMT dividers]]''' -- Sasha / Arshak | ||
+ | ** All parts for dividers have been ordered | ||
+ | ** Install 25 modules with new dividers on the CCAL, build prototype of LV patch pannel (check rate and noise) | ||
+ | * '''Installation of the FCAL2 detector''' -- Sasha / Arshak | ||
+ | ** [https://halldweb.jlab.org/wiki/index.php/FCAL_Installation Detector installation page] | ||
+ | ** Updates from the meetings with Tim's group [https://halldweb.jlab.org/wiki/index.php/November_16,_2022_FCAL_Insert_Installation_Meeting] | ||
+ | ** Manpower and division of tasks | ||
+ | ** [https://halldweb.jlab.org/wiki/index.php/List_of_tasks_and_manpower Projects for summer students] | ||
+ | ** Meeting with the detector imaging group | ||
* '''Light Monitoring System''' -- Arshak | * '''Light Monitoring System''' -- Arshak | ||
+ | **[https://userweb.jlab.org/~aasatury/Fcal_LMS/beam_test2/ Beam test] | ||
* '''Simulations/Analysis''' | * '''Simulations/Analysis''' | ||
+ | |||
+ | =Minutes= | ||
+ | Attendees: Bill, Arshak, Sasha, Igal, Zisis, Liping, Jane, Olga, Jon, Eugene, Malte, Axel, S.T. | ||
+ | * We have received all 835 Crytur crystals we expected to receive last year | ||
+ | ** All wrapped | ||
+ | ** 95 more expected in May | ||
+ | * Grand total number of fabricated modules = 1408 (only 3 more crystals available for fabrication in lab) | ||
+ | * COMCAL removed from hall | ||
+ | ** Modules need to be at least partially disassembled | ||
+ | *** Replace 25 micron brass straps with 50 micron brass straps? re-wrap? | ||
+ | *** Some tedlar had grease contamination due use of grease for optical coupling | ||
+ | *** PMT shielding: replace FR4 with soft iron | ||
+ | *** Need to remove plastic cap holding optical fiber | ||
+ | * Plan to install 5x5 prototype using COMCAL crystals in hall | ||
+ | ** Instrument with new electronics to test hight rate response | ||
+ | ** Check 3x amplifier in new PMT base design | ||
+ | *** Have 25 bases in house | ||
+ | *** Test noise level | ||
+ | * Plans for module installation coming together: student help, procedures, shims and alignment tools, ... | ||
+ | ** Expect some help from imaging group | ||
+ | * Arshak continuing to work on LMS beam test using 3x3 matrix | ||
+ | ** Plexiglas plate in front with similar design to actual plate but smaller size | ||
+ | ** Middle fully instrumented with FCAL-2 module, sides blanks with varying light access in the front (close/open faces) | ||
+ | ** Measured cross talk using PS setup selecting particular PS tiles | ||
+ | ** Cross talk level <~0.5% integrating over all amplitude, but most of the amplitude is near pedestal | ||
+ | *** Suggest look at amplitude dependence | ||
+ | *** MC simulation of effect? | ||
+ | * Also discussed using individual fibers for LMS | ||
+ | ** Not enough light from 250 micron fibers? Thicker diameter fibers more difficult to bend | ||
+ | ** Light uniformity? |
Latest revision as of 09:01, 17 January 2023
Meeting time and location:
- 9:30 am EST (JLab time) remote only
- Zoom meeting ID: 161 050 9142 Passcode: 004965
Agenda
- Preparation of parts for FCAL2 modules -- Sasha
- Received all 150 CRYTUR crystals from physics division (22-C0275) [1]
- Expect to receive 95 more CRYTUR crystals in May (835 + 95 = 930 in total)
- Wrapped CRYTUR crystals: 835 (ALL available CRYTUR)
- 10 crystals wrapped since last meeting
- Available for wrapping: 10 CRYTUR crystals, 140 SICCAS crystals from CCAL
- Mindy (DSG group) continues wrapping crystals and soldering wires to sockets
- Disassembling CCAL
- CCAL moved to the ESB
- All modules (with SICCAS crystals) are removed
- List of available parts
- Received all 150 CRYTUR crystals from physics division (22-C0275) [1]
- Module fabrication -- Sasha
- Fabricated modules: Total 1408 (12 modules fabricated since last week)
- Testing of PMT dividers -- Sasha / Arshak
- All parts for dividers have been ordered
- Install 25 modules with new dividers on the CCAL, build prototype of LV patch pannel (check rate and noise)
- Installation of the FCAL2 detector -- Sasha / Arshak
- Detector installation page
- Updates from the meetings with Tim's group [2]
- Manpower and division of tasks
- Projects for summer students
- Meeting with the detector imaging group
- Light Monitoring System -- Arshak
- Simulations/Analysis
Minutes
Attendees: Bill, Arshak, Sasha, Igal, Zisis, Liping, Jane, Olga, Jon, Eugene, Malte, Axel, S.T.
- We have received all 835 Crytur crystals we expected to receive last year
- All wrapped
- 95 more expected in May
- Grand total number of fabricated modules = 1408 (only 3 more crystals available for fabrication in lab)
- COMCAL removed from hall
- Modules need to be at least partially disassembled
- Replace 25 micron brass straps with 50 micron brass straps? re-wrap?
- Some tedlar had grease contamination due use of grease for optical coupling
- PMT shielding: replace FR4 with soft iron
- Need to remove plastic cap holding optical fiber
- Modules need to be at least partially disassembled
- Plan to install 5x5 prototype using COMCAL crystals in hall
- Instrument with new electronics to test hight rate response
- Check 3x amplifier in new PMT base design
- Have 25 bases in house
- Test noise level
- Plans for module installation coming together: student help, procedures, shims and alignment tools, ...
- Expect some help from imaging group
- Arshak continuing to work on LMS beam test using 3x3 matrix
- Plexiglas plate in front with similar design to actual plate but smaller size
- Middle fully instrumented with FCAL-2 module, sides blanks with varying light access in the front (close/open faces)
- Measured cross talk using PS setup selecting particular PS tiles
- Cross talk level <~0.5% integrating over all amplitude, but most of the amplitude is near pedestal
- Suggest look at amplitude dependence
- MC simulation of effect?
- Also discussed using individual fibers for LMS
- Not enough light from 250 micron fibers? Thicker diameter fibers more difficult to bend
- Light uniformity?