General Meeting Summary 9/21/16

JLAB DETECTOR UPDATES (Arthur)

• Inner tray assembly for SP-11 aerogel detector tray is complete. Next step will be to install the wires (safety feature for aerogel tiles once installed)

• NPS prototype tests can commence - all necessary safety training was completed

• Action items:

• Bring SP-11 aerogel tiles to JLab in week 26th Sept
• Estimate density of materials for SP-11 tray - important for delta electron generation/contribution in experiments
• Start NPS prototype tests of PMT shielding in magnetic field

KAON DATA ANALYSIS (Marco)

• A missing normalization factor was found and is now included in the analysis

• Discussion of current analysis results

• Action items:

• Optimize model and binning
• Determine dt for each bin - will be helpful for decisions on t-binning
• Extract kaon FF using the most recent cross sections
• Check that results from 3-parameter and 4-parameter unseparated cross section fits give the same separated cross section result - assumes that 4-parameter fit converges

PROJECTIONS FOR UPCOMING KAON EXPERIMENT (Salina)

• Working on projections of pion statistics that will be taken during our kaon electroproduction experiment last year - depending on stats and projected systematics, this may provide important information on pion form factor at low Q^2

APS-BASED READOUT OF PBWO4 CRYSTAL DETECTORS (Andres, Rich, Rishabh)

• Work done in context of Neutral Particle Spectrometer construction and also PbWO4-based calorimeter at the Electron-Ion Collider. Main question: is APD or PMT based readout is more favorable?

• Discussion about seeing first signals using a SiPM kit from CAEN

• Next steps: use the Hamamatsu APDs we have at CUA and construct an LED-based system that can be read through our data acquisition system

• Action items:

• Locate the specifications for the Hamamatsu APDs
• Read Hamamatsu APD signals with CUA ADC
• Measure crystal with APD and compare to crystal with PMT

UPDATE ON CMS PIXEL DETECTORS (Rachel)

• Module construction at Nebraska almost done. Next will be focus on mounting modules on disks at Fermilab etc.

• Installation at CERN will be in early Spring 2017

• Brief discussion about building the spare modules at CUA in 2017

STATUS OF GLUEX AND DIRC DETECTORS (Greg)

• General discussion about GluEx status

• Some data taken in Hall D over the last year, calibrations ongoing
• Many opportunities for data analysis - working on identifying specific channels that could be CUA project

• General discussion about GlueEx upgrade, and in particular DIRC detectors

• upgrade will use parts of the Babar DIRC
• transportation is a complex procedure - CUA will be involved in checking the integrity of the bars

NEXT MEETING: WEDNESDAY, 28 SEPTEMBER, 10:00 AM (EDT)