User name Miyoshi
Log entry time 15:08:09 on March 9,2000
Entry number 22817
keyword=SSD : Can we cut unused TDC data?Figure shows SSD TDC peak around x-ch.3000 for run31635,800K trigger.
Normally, SSD timing resolution is about 30nsec(FWHM).
(in this histogram, 1 channel is 500psec)
We already used TDC timing gate parameter
3-sigma(99%) from this peak (about only mean value of this peak +/-69 channels).
I think we can cut the data of TDC channel <2600 and >3400 (to be too safe?).
This will help to reduce SSD part of data size by ~33%.
This work will be done by "tdcfilter" (coda readout list(crl) file)
FIGURE 1
