학술논문
Front-end electronics for PHENIX time expansion chamber
Document Type
Conference
Author
Barish, K.; Chang, W.C.; Dietzsch, O.; Ferdousi, T.; Franz, A.; Fried, J.; Fung, S.Y.; Gannon, J.; Harder, J.; Kandasamy, A.; Kelley, M.A.; Kotchetkov, D.; Lebedev, A.; Li, X.H.; Mahon, J.; Mioduszewski, S.; Muniruzzamann, M.; Nandi, B.; O'Brien, E.; O'Connor, P.; Pisani, R.; Rankowitz, S.; Rosati, M.; Seto, R.; Takagui, E.M.; Von Achen, W.; Wang, H.Q.; Xie, I.
Source
2001 IEEE Nuclear Science Symposium Conference Record (Cat. No.01CH37310) Nuclear science symposium Nuclear Science Symposium Conference Record, 2001 IEEE. 1:604-608 vol.1 2001
Subject
Language
ISSN
1082-3654
Abstract
Front-end electronics (FEE) has been developed for the PHENIX time expansion chamber (TEC), a multi-wire tracking detector with over 20k readout channels. The FEE for the TEC consists of an analog preamplifier shaping amplifier circuit board, a digital front-end module circuit board plus ancillary support boards for timing, control and communication. Signals from each chamber wire are sampled (/spl sim/40 MHz), digitized, buffered, and then formatted as 64 channel serial data packets to be transmitted via 1 GHz optical link. Three custom IC's have been designed for this system: 1) octal preamplifier and shaping amplifier with tail cancellation and dual-gain for large dynamic range with full serial control of gain, shaping time and tail; 2) nonlinear 5 bit flash-ADC with 9 bit dynamic range; 3) digital memory unit for programmable delay and memory depth. The FEE has been installed, commissioned and operated in the PHENIX experiment at Brookhaven National Laboratory.