General Meeting Summary 11/23/16

DATA ANALYSES

• Extraction of pion form factor from kaon experiment E12-09-011 (Salina)

• Salina showed that E12-09-011 has significant number of pions in acceptance - she's investigating if a precision measurement of the pion form factor would be possible
• Her plan is to investigate if the kinematic coverage in the azimuthal angle is sufficient with the scheduled configurations - if not, she is planning to estimate the time needed for additional configurations and make a proposal to the spokespeople at the next monthly meeting

DETECTOR UPDATES

• Aerogel Cherenkov (Arthur)

• Discussion about options for adding another layer of aerogel tiles - currently have only seven installed

• main issue: need a different cover for transportation and storage - clearance needed is 3-5 mm
• options discussed: 1) new custom cover, 2) modification of existing plexiglass and aluminum covers
• Action item: discuss with Walter what's needed for option (1) and time scale

• Readout status for cosmic data taking in Hall C (Arthur)

• Aerogel HV hardware is ready - connected to crate on 2nd floor counting house - network access available
• Aerogel signal readout can be done through VMEX crate in detector hut and using pre-shower software
• Trigger for measurements: use a couple of scintillators - 2 channels as done for other trays
• General status of SHMS DAQ and trigger: hodoscope work still ongoing, full DAQ system will be ready at earliest January 2017

• NPS PMT shielding studies - scheduling magnetic field exposure for week of 28th

• Crystal readout (Andres)

• CUA APD-based readout has been setup - still need to construct shielding, develop a suitable trigger concept, and in long-term think about pre-amp options
• Greg has arranged for loan of APD-based readout used by HPS to CUA - system comes without trigger
• Action item: Andres will continue with the setup he built at CUA and discuss with HPS group at JLab about optimizations

• Crystal measurements (Salina)

• Richard completed light yield measurements of SICCAS #19 and CRYTUR #01 - data analysis ongoing
• Salina plans to measure light yield for the same crystals - comparison of these and earlier measurements are expected to shed light on observed discrepancies between light yields measured

• GluEx detectors (Greg)

• Update on ongoing tests of cookies (connection between sensor and expansion volume for DIRC) at JLab

• tests were done with cookies of thicknesses between 1-3 mm and produced by different places - quality still needs to be improved for final application

• Plans to make transmittance measurements of a number of 2mm thick cookies at CUA in week of 28th - coordinate with Salina

OTHER

• Discussion about Rachel/Aaron's shipments to CUA

NEXT MEETING: WED. 30 NOV AT 10:00 AM (EST)