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Minutes of eRD108 Bi-weekly Wed. Meeting - 05-25-2022
Attendees:
Bob, Francesco, Kondo, Marcus, Matt, Pietro, Sourav.
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Cylindrical MPGD prototype & associated R&D
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* Cylindrical uRWELL effort
==> Pietro: gave an update on the mechanical support structure of cyl. uRWELL at FIT (see slides on Indico)
==> Subsequent discussion on ramping up the design effort ==> start in parallel the actual overall uRWELL design
1-) Will have a smaller meeting with Pietro, Alexander/Bob and Kondo to start mechanical design the uRWELL/RO foils
2-) Bob would like to stay connected but is also very busy with sPHENIX activities for now
3-) Pietro will work the CAD files of the mock-up uRWELL foil with holes including all assembly features (holes, stretching features ...)
==> VMM3a-SRS: Kondo to ship the VMM3a FE cards + DVM cards to Martin by the end of the week.
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MPGD Trackers for EIC Detector 1
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* Input parameters for simulation effort of the Tracking WG
==> eRD108 will provide all input in term of resolution, radation lentgh, detector thickness etc to Tracking WG
Matt: Liason / contact between Tracking WG and Simu/softW WG; but also the interface between eRD108 and people doing simulation tasks
==> Nominal spatial resolution (track perpandicular to detector) for MPGDs: Current standings from beam test and experiments
1-) 50 um (multiple beam test sources) for small 10 cm x 10 cm MPGDs (GEMs. uRWELL, Micromegas) and several R/O patterns;
2-) 60 um for 50 cm x 50 cm SBS triple-GEM prototypes (beam test 2013)
2-) 70 um measured from PRad experimental data for PRad triple-GEM (120 cm x 54 cm and 400 um strip pitch)
==> Parameterization of spatial resolution as a function of detector size
use 10cm x 10cm, PRad triple GEM and SBS triple GEM prototype)
==> Parameterization of spatial resolution as a function of the incoming track angle
1-) Bob offers to provide data with GEM prototypes tested in beam at FNAL
2-) Check with Francesco if such information exists with CLAS12 Micromegas, that we can use as well
3-) Discuss of dedicated beam test campaign in Hall D at JLab this fall
=> Bob offered to lend his automated / motorized setup for detector plane rotation
=> Marcus suggested Pietro can help with the effort with a trip to Jefferson Lab
* Discussion on MPGD operating in micro-TPC / mini drift mode
==> PID WG should give us range for angular resolution requirements for the seeding of DIRC and dRICH
1-) This will be complemented by simulation studies of impact point resolution from central tracker at the Cerenkow detector level
==> We discussed including discussion of the associated readout electronics
1-) Has to have fast shaping time, fast sampling and large data acquisition time window i.e. type of the electronics used for GEM-TRD R&D
2-) Standard MPGD tracking readout electronics not good enough
==> Need to evaluate pros and cons of micro-TPC vs. twin-amplification (double-sided) uRWELL/Micromegas detector