Development Period - February 9-10

Listed in order of suggested priority...

Re-measure emittance in order to analyze Run 1 conditions (3 hours)

• February 9, 2015:

• Identified parameters and details for a procedure
• Measured emittance and Twiss for 6.3 MeV/c setup
• Started emittance and Twiss for 5.5 MeV/c but harp is stuck so test deferred for now

Test hardware TOF veto at 31MHz (4 hours)

• Runs 8210 - 8217 with 0.225 um gold foil

Test background as a function of target ladder position on large target foil (0 hours)

• February 9, 2015:

• Deferred until re-doing emittance measurement at 5.5 MeV/c to try for smaller spot size with 5 or 10 mm rings too

Test Mott delayed operation (1 hour):

• Set of 6 runs while changing between No Delay and Delay=8
• Runs 8218 - 8223 with 1.0 um gold foil
• media:Delayed_Ana.pdf media:Delayed_Ana.pptx

Test FADC time-of-flight readout and new Mott DAQ Configurations (2 hour)

• February 4, 2015:

• Added two more laser timing signals to FADC. From Disc 708, OUT signal was connected to FADC Ch10 and OUT_bar was connected to Ch12. The original laser timing signal is still connected to Ch9.

• Run 8224 with 1.0 um gold foil and Mott_SemiInt configuration
• Measure deadtime with 2.2 uA on 1 um gold foil:

• Run 8225: Mott_SemiInt configuration (FADC+TDC+Scalers), Deadtime = 28% at 5.1 kHz.
• Run 8227: SemiIntFast configuration (only readout of FADC, Blocklevel = 1) , Deadtime = 17% at 5.1 kHz.
• Run 8228: SemiIntBlock configuration (only readout of FADC, Blocklevel = 50) , Deadtime = 1% at 5.1 kHz.

• Mott DAQ Speed: media:DAQ_Speed_Feb2015.pdf media:DAQ_Speed_Feb2015.pptx