T to
D
converters
event
buffer
pipeline
event
buffer
Old
(converting) TDCs
New
(pipeline) TDCs
data
data
Common start
(L1ACCEPT)
Fast
clear
(L2FAIL)
Reference
(L1ACCEPT)
TDC
trigger
(L2ACCEPT)
DAQ is blocked during conversion:
35-40 microsec per
event in average
depending on run conditions - direct
contribution to the CLAS dead time
Free-running system:
does not contribute to the CLAS
dead time