Title :
Continuously live image processor for drift chamber track segment triggering
Author :
Berenyi, A. ; Chen, H.K. ; Dao, K. ; Dow, S.F. ; Gehrig, S.K. ; Gill, M.S. ; Grace, C. ; Jared, R.C. ; Johnson, J.K. ; Karcher, A. ; Kasen, D. ; Kirsten, F.A. ; Kral, J.F. ; LeClerc, C.M. ; Levi, M.E. ; Von Der Lippe, H. ; Liu, T.H. ; Marks, K.M. ; Meyer,
Author_Institution :
Lawrence Berkeley Lab., CA, USA
Abstract :
The first portion of the BABAR experiment level 1 drift chamber trigger pipeline is the track segment finder (TSF). Using a novel method incorporating both occupancy and drift-time information, the TSF system continually searches for segments in the supercells of the full 7104-wire drift chamber hit image at 3.7 MHz. The TSF was constructed to operate in a potentially high beam-background environment while achieving high segment-finding efficiency, deadtime-free operation, a spatial resolution of <0.7 mm and a per-segment event time resolution of <70 ns
Keywords :
drift chambers; high energy physics instrumentation computing; image processing; nuclear electronics; pipeline processing; trigger circuits; 3.7 MHz; BABAR experiment; continuously live image processor; deadtime-free operation; drift chamber track segment triggering; high beam-background environment; level 1 drift chamber trigger pipeline; track segment finder; Data acquisition; Field programmable gate arrays; Image segmentation; Laboratories; Physics; Pipelines; Printed circuits; Spatial resolution; Testing; Wire;
Conference_Titel :
Nuclear Science Symposium, 1998. Conference Record. 1998 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-5021-9
DOI :
10.1109/NSSMIC.1998.774330
