Difference between revisions of "JEF meeting, February 10, 2023"

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*'''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) ]
 +
*** Available for wrapping: 60 SICCAS crystals from CCAL && prototype [https://halldweb.jlab.org/wiki/index.php/All_modules_(with_SICCAS_crystals)_are_removed] [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/wrapped/ccal_crystals.pdf]
 +
*** George (DSG group) started disassembling CCAL modules and removing LMS caps.
 +
*** 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]
 +
*** Some PMT housing are missing ( > 60, trying to find with Tim)
 
* '''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 1420 </span> (7 modules fabricated since last week)
 +
*** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/module_fabrication.pdf All SICCAS 576 + 3 SICCAS]
 +
*** [https://halldweb.jlab.org/detectors/fcal2/module_fabrication/status/module_fabrication_crytur.pdf 834 CRYTUR], available: 1
 +
*** [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
 +
** Most parts for dividers have been received
 +
** 25 dividers for the prototype are ready (have to be tested), expect to receive the LV patch panel prototype
 +
during next week. The CCAL prototype should be ready by the end of next week (?)
 
* '''Installation of the FCAL2 detector''' -- Sasha / Arshak
 
* '''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
 +
** 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/500mkm_fiber/ 500mkm Fiber tests]
 
* '''Simulations/Analysis'''
 
* '''Simulations/Analysis'''
 +
** [https://halldweb.jlab.org/DocDB/0058/005888/001/jef_update_feb23.pdf draft of slides for collab meeting]
 
* '''Discussion on extension/high intensity running for JEF
 
* '''Discussion on extension/high intensity running for JEF
 +
 +
=Minutes=
 +
Attendees: Zisis, Sasha, Bill, Tim W., Liping, Arshak, Olga, Igor, Malte, Igal, Eugene, Jane, S.T.
 +
* All of the COMCAL modules have been unwrapped and are ready to convert to FCAL-2 modules
 +
* PMT housings still missing -- need about 60 (40 + spares)
 +
* Shelf space reorganization in the works -- need enough for temporary storage in hall before stacking
 +
* Received 25 new dividers from Chris S. + ribbon cables for LV
 +
** Constructed 5x5 module array + LV patch panel, ready for installation in hall
 +
** Cooling plates:  checking for water leaks
 +
* Arshak continuing studies with 500 micron fibers -- has bundle of 64 fibers, testing in groups of 12-14
 +
** Generally uniformity is good (<20% variation in light intensity ) but had a few outliers
 +
** Need to make decision: plexiglas (cheaper but with potential cross talk issues) and fibers to each module
 +
* Lemo connectors have arrived
 +
* Grand total fabricated modules remains at 1420
 +
* Will have ~10 students helping out in the summer
 +
* Simon gave a brief update on 2&pi;0 background studies, will give talk on software/analysis at collaboration meeting
 +
** Need to make FCAL-2 geometry in reconstruction/simulation more realistic
 +
** Island vs default cluster algorithm
 +
* Igal working on ML (boosted decision tree in TMVA) to suppress background in &eta;&rarr;&pi;0&gamma;&gamma;
 +
* Discussed running JEF with GlueX-III at higher intensity
 +
** Need to understand increased background (simulate at higher rate)
 +
** Need higher trigger threshold (will not work for &eta;&rarr;&pi;0&pi;+&pi;- channel)
 +
** Gain experience with real FCAL-2 next year, then consider JEF extension?

Latest revision as of 10:19, 13 February 2023

Meeting time and location:

  • 9:30 am EST (JLab time) remote only
  • Zoom meeting ID: 161 050 9142 Passcode: 004965

Agenda

during next week. The CCAL prototype should be ready by the end of next week (?)

Minutes

Attendees: Zisis, Sasha, Bill, Tim W., Liping, Arshak, Olga, Igor, Malte, Igal, Eugene, Jane, S.T.

  • All of the COMCAL modules have been unwrapped and are ready to convert to FCAL-2 modules
  • PMT housings still missing -- need about 60 (40 + spares)
  • Shelf space reorganization in the works -- need enough for temporary storage in hall before stacking
  • Received 25 new dividers from Chris S. + ribbon cables for LV
    • Constructed 5x5 module array + LV patch panel, ready for installation in hall
    • Cooling plates: checking for water leaks
  • Arshak continuing studies with 500 micron fibers -- has bundle of 64 fibers, testing in groups of 12-14
    • Generally uniformity is good (<20% variation in light intensity ) but had a few outliers
    • Need to make decision: plexiglas (cheaper but with potential cross talk issues) and fibers to each module
  • Lemo connectors have arrived
  • Grand total fabricated modules remains at 1420
  • Will have ~10 students helping out in the summer
  • Simon gave a brief update on 2π0 background studies, will give talk on software/analysis at collaboration meeting
    • Need to make FCAL-2 geometry in reconstruction/simulation more realistic
    • Island vs default cluster algorithm
  • Igal working on ML (boosted decision tree in TMVA) to suppress background in η→π0γγ
  • Discussed running JEF with GlueX-III at higher intensity
    • Need to understand increased background (simulate at higher rate)
    • Need higher trigger threshold (will not work for η→π0π+π- channel)
    • Gain experience with real FCAL-2 next year, then consider JEF extension?
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