Cjs. Morgado et al., THE PERFORMANCE OF THE FADC SYSTEM FOR THE ZEUS CENTRAL TRACKING DETECTOR, IEEE transactions on nuclear science, 41(4), 1994, pp. 1250-1254
The Central Tracking Detector (CTD) of the ZEUS experiment uses a Flas
h Analogue to Digital Converter (FADC) readout system to measure the a
rrival time of ionisation at sense wires as well as the charge deposit
ed. A digitisation frequency of 104 MHz is used and the data is writte
n to pipelined data stores. A Digital Signal Processor (DSP) is used t
o control the main functions on the card as well as perform data param
eterisation and compression. Test and operational performance results
from the first electron-proton interactions are presented.