THE SMALL-ANGLE SPECTROMETER OF EXPERIMENT UA8 AT THE SPPS-COLLIDER

Date

1993-04-01

Author

BRANDT, A
ELLETT, J
ERHAN, S
JACKSON, R
KUZUCU, A
MEDINNIS, M
OILLATAGUERRE, P
OZDES, N
SCHLEIN, P
Zeyrek, Mehmet Tevfik
ZWEIZIG, J
CHEZE, JB
ZSEMBERY, J

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

22
views

0
downloads

Experiment UA8 at the SppSBAR-collider studied the production of hadronic jets in ppBAR 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 mus. 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.

Subject Keywords

PPBAR, ISR

URI

https://hdl.handle.net/11511/56264

Journal

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT

DOI

https://doi.org/10.1016/0168-9002(93)90707-o

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

The Characterization of a Tar Sand Sample Using Differential Scanning Calorimeters Senguler, I.; Kök, Mustafa Verşan (2013-01-01) In this study, non-isothermal kinetics and a thermal analysis tar sand sample is studied by differential scanning calorimeter and pressurized differential scanning calorimeter. Differential scanning calorimeter and pressurized differential scanning calorimeter curves revealed two reaction regions in the temperature range of 20-600 degrees C. Effect of pressure was also studied in order to see the thermal behavior of a tar sand sample under different elevated pressures. Two different kinetic methods (ASTM an...
The effects of alkali promoters on the dynamics of hydrogen chemisorption and syngas reaction kinetics on Ru/SiO2 surfaces Üner, Deniz; Pruski, M; King, TS (1997-01-01) The dynamics of chemisorbed hydrogen on unpromoted and promoted Ru/SiO2 catalysts was studied by means of single pulse and selective excitation H-1 NMR spectroscopy. Dynamic NMR studies indicated a reduced mobility of hydrogen in the presence of alkali promoters (Na and K) at high loadings (65 atomic %). On unpromoted Ru/SiO2 catalysts, the line due to hydrogen-on-metal was homogeneously broadened at pressures above 0.5 Torr H-2. Similar behavior was observed on promoted Ru/SiO2 catalyst with 66 atomic % K....
Measurement of D*(+/-) meson production in jets from pp collisions at root s=7 TeV with the ATLAS detector Aad, G.; et. al. (2012-03-19) This paper reports a measurement of D*(+/-) meson production in jets from proton- proton collisions at a center- of- mass energy of root s = 7 TeV at the CERN Large Hadron Collider. The measurement is based on a data sample recorded with the ATLAS detector with an integrated luminosity of 0.30 pb(-1) for jets with transverse momentum between 25 and 70 GeV in the pseudorapidity range vertical bar eta vertical bar D-0 pi(+), D-0 -> K-pi(+), and its charge conjugate. The production rate is found to be N(D*(+/...
EVIDENCE FOR A SUPER-HARD POMERON STRUCTURE BRANDT, A; ERHAN, S; KUZUCU, A; MEDINNIS, M; OZDES, N; SCHLEIN, PE; Zeyrek, Mehmet Tevfik; ZWEIZIG, JG; CHEZE, JB; ZSEMBERY, J (1992-12-01) Results are presented from a study of jet production in ppBAR interactions with square-root s = 630 GeV at the CERN SppS-ColliderBAR, which are tagged by a proton or antiproton which possesses more than 90% of the incident beam momentum. The hard scattering which occurs between a parton in a beam particle and another in the soft residual component (pomeron-dominated) of the tagged proton allows the pomeron's partonic structure to be investigated. The observed jet distributions are in good agreement with exp...
Observation of electroweak production of W gamma with two jets in proton-proton collisions at root s=13 TeV Sirunyan, A. M.; et. al. (2020-12-01) A first observation is presented for the electroweak production of a W boson, a photon, and two jets in proton-proton collisions. The W boson decays are selected by requiring one identified electron or muon and an imbalance in transverse momentum. The two jets are required to have a high dijet mass and a large separation in pseudorapidity. The measurement is based on data collected with the CMS detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1). The obser...

Citation Formats

A. BRANDT et al., “THE SMALL-ANGLE SPECTROMETER OF EXPERIMENT UA8 AT THE SPPS-COLLIDER,” NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, pp. 412–426, 1993, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/56264.