General Meeting Summary 10/12/16

JLAB DETECTORS

• PbWO4 readout with APDs/SiPM (Andres, Rishab, Richard)

• Discussion about first signal in response to LED as seen on oscilloscope

• Observed tail is on order us, while LED blinks on order nanoseconds - it is clear that signal is in response to LED, but unclear what the output from the circuit really is. Changing the HV does not change the observed signal

• Action Items:

• Check setup with PMT instead of SiPM to rule out the the problem is the LED itself
• Check amplifier - signal expected from photodiode
• Check with Rainer (Giessen U.) and Stepan (JLab/Hall B) about documentation or any other information on the amplifier
• longer term: need to check polarity of signal from SiPM - CUA ADC cannot read positive

CERN DETECTORS (Rachel)

• Discussion about the ongoing tracker meeting (provides operation and status updates, as well as ideas and projections for future phases)

• the inner pixel tracking detector will be installed in the next few month
• CUA's part of the pixel detector disks is 1/2 done and already at CERN

DATA ANALYSES (Marco, Salina)

• Discussion about Marco's analysis of the kaon form factor from JLab data

• Spectrometer optics are now correct
• optimized binning in t
• systematic studies for cross section extraction ongoing
• Action item: send updated plots

• Discussion about Salina's studies of projections for additional pion physics with CUA's kaon experiment E12-09-011 running in 2017 at JLab

• made simulations of the reaction channel and extracted number of events expected
• Action item: bin in t with equal statistics, extract pion form factor and estimate uncertainties with given statistics

APS RELATED NOTES

• Aaron will become APS Fellow - Congratulations!

• APS April meeting will take place in DC, 28-31 January 2017

• Talks by Salina, Marco, Andres, Rishabh, and Richard will be on Saturday, 28 Jan. starting at 10:45am
• Greg will chair a session on heavy flavors on Sunday, 29 Jan. - TH one on Sat. 28 Jan.
• There will be a talk on pixel detectors by a UNL graduate student and a poster by an undergraduate student

• DNP meeting takes place this week in Vancouver, Canada

• Three high school students (Dannie Griggs, Salim Roustom, and Jacob Wacht) who worked with us this summer will present posters

OTHER

• CUA is now an official member of CMS collaboration at CERN

NEXT MEETING: WED. 10 OCT at 10:00 AM (EDT)