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- 8am MCC meeting met incoming LCLS primary user with ePix (500um silicon for X-rays) who are also battling with radiation damage and showed interests in what we are doing.
- Did a threshold scan (Run 178) on the RTI module and found threshold still narrowed distributed around 3000e but noise got substantially worse at ~500e,
- Turned off RTI bias from the remote control console, but the LV read back still says 6mV, Caladium ADC Vmon=15mV, Imon=5mV which are effectively pedestals. Noise up to 1100e when unbiased.
- Reestablished RTI bias for -80V with BK setV=0.080, readback 0.085 and ADC Vmon 0.088-0.093. Threshold scan Run 179: threshold still narrowly groups around 3000e, noise still ~500e, but he right edge bad pixels cleaned up. Bizzare Bizarre looking noise RMS vs channel map with systematic pattnen vs channel alternating column pattern and multiple clusters of values within even the same column from 300e – 900e depending on pixel location.
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