TY - JOUR
T1 - The small angle spectrometer of experiment UA8 at the SppS-collider
AU - Brandt, A.
AU - Ellett, J.
AU - Erhan, S.
AU - Jackson, R.
AU - Kuzucu, A.
AU - Medinnis, M.
AU - Oillataguerre, P.
AU - Ozdes, N.
AU - Schlein, P.
AU - Zeyrek, M.
AU - Zweizig, J.
AU - Cheze, J. B.
AU - Zsembery, J.
N1 - Funding Information:
* Supported by US National Science Foundation, Grants PHY90-08221 and PHY85-09175. Deceased . i Now at Fermi National Accelerator Laboratory, Batavia, IL USA. Visitor from Cukurova University, Adana, Turkey; also supported by ICSC - World Lab. Visitor from Middle East Technical Turkey .
PY - 1993/4/1
Y1 - 1993/4/1
N2 - Experiment UA8 at the SppS-collider studied the production of hadronic jets in pp interactions which also contained final state protons or antiprotons with more than 90% of the full beam momentum of 315 GeV. Four Roman pot spectrometers were installed in interaction region LSS4 and interfaced to the data acquisition system of the UA2 calorimeter experiment, such that UA8 data could be logged on UA2 raw data tapes. In order to minimally perturb normal UA2 data acquisition and allow concurrent operation for the life of the experiment, an efficient high speed data-driven trigger processor was employed. The processor calculated the momentum of a track in a Roman pot spectrometer with 1.4% accuracy in 450 ns, thereby allowing a trigger decision to be made within 1.3 μs. We describe the integration of this processor into the high bandwidth readout of the UA8 wire chamber TDC system, and the on-line software package which monitored the hardware operation. The suppression of backgrounds from beam halo and multiple interactions in a bunch crossing is also discussed.
AB - Experiment UA8 at the SppS-collider studied the production of hadronic jets in pp interactions which also contained final state protons or antiprotons with more than 90% of the full beam momentum of 315 GeV. Four Roman pot spectrometers were installed in interaction region LSS4 and interfaced to the data acquisition system of the UA2 calorimeter experiment, such that UA8 data could be logged on UA2 raw data tapes. In order to minimally perturb normal UA2 data acquisition and allow concurrent operation for the life of the experiment, an efficient high speed data-driven trigger processor was employed. The processor calculated the momentum of a track in a Roman pot spectrometer with 1.4% accuracy in 450 ns, thereby allowing a trigger decision to be made within 1.3 μs. We describe the integration of this processor into the high bandwidth readout of the UA8 wire chamber TDC system, and the on-line software package which monitored the hardware operation. The suppression of backgrounds from beam halo and multiple interactions in a bunch crossing is also discussed.
UR - http://www.scopus.com/inward/record.url?scp=0027577375&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027577375&partnerID=8YFLogxK
U2 - 10.1016/0168-9002(93)90707-O
DO - 10.1016/0168-9002(93)90707-O
M3 - Article
AN - SCOPUS:0027577375
SN - 0168-9002
VL - 327
SP - 412
EP - 426
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 2-3
ER -