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User name K. Lan
Log entry time 18:56:06 on February 26,2000
Entry number 21681
keyword=SSD, Noise, Background
Sammary of SSD test run
Purppose of run: Noise scan at no beam
Run # Vth of SSD Trigger condition
31100 250mV Pulser, total 60k
31101 260mV Pulser, total 60k
31102 270mV Pulser, total 60k
31104 280mV Pulser, total 120k
31103 290mV Pulser, total 240k
31105 300mV Pulser, total 480k
purpose of run: Background study with beam_on Enge_off
31110 Vth=320 pulser, trigger
31111 Vth=320 sos, trigger
31112 Vth=280 sos, trigger
31113 Vth=260 sos, trigger
These runs show sawtooth pattern.
Run number from 31114-311244 are junks. ( auto noise did not run)
Purpose of run: HNSS background noise study with Enge power_on
Run# Vth trigger
31124~31129 320mV SOS only
These runs show flat pattern.
need some more explination.