1. New pipeline TDCs
¥Main goal: decrease CLAS dead time
¥Method: use dead-timeless boards
¥All FASTBUS TDCs were replaced by pipeline TDCs with appropriate
resolution: 26 CAEN v1190 boards, 8 CAEN v1290 boards and
14 F1TDC boards were installed
¥CLAS
time-of-flight, forward calorimeter, large angle calorimeter, Cherenkov
counter, start counter and tagger systems were equipped
with 3000 channels of pipeline TDCs
¥New TDC trigger and TDC reference systems were
installed
¥TDC calibration system was updated
¥Readout and calibration software were developed
S.Boyarinov, S.Pozdnyakov, V.Sapunenko, D.Abbott, J.Langheinrich