TY - JOUR
T1 - The timing system for the CDF electromagnetic calorimeters
AU - Goncharov, M.
AU - Kamon, T.
AU - Khotilovich, V.
AU - Krutelyov, V.
AU - Lee, S. W.
AU - Toback, D.
AU - Wagner, P.
AU - Frisch, H.
AU - Sanders, H.
AU - Cordelli, M.
AU - Happacher, F.
AU - Miscetti, S.
AU - Wagner, R.
N1 - Funding Information:
The authors would like to acknowledge a number of people who contributed significantly to the EMTiming system. They include Dervin Allen, Chris Battle, Myron Campbell, Matt Cervantes, Steve Chappa, Jamie Grado, Bob DeMaat, Camille Ginsburg, Eric James, Min-Jeong Kim, Steve Kuhlmann, Jonathan Lewis, Mike Lindgren, Pat Lukens, Lew Morris, Peter Onyisi, Steve Payne, Fotis Ptohos, Rob Roser, Willis Sakumoto, Paul Simeon, Rick Tesarek, Erwin Thomas, Wayne Waldrop, and Peter Wilson. In addition, we thank the Fermilab staff and the technical staffs of the participating CDF institutions for their vital contributions. This work was supported by the US Department of Energy and National Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the Ministry of Education, Culture, Sports, Science and Technology of Japan; the Natural Sciences and Engineering Research Council of Canada; the National Science Council of the Republic of China; the Swiss National Science Foundation; the A.P. Sloan Foundation; the Bundesministerium für Bildung und Forschung, Germany; the Korean Science and Engineering Foundation and the Korean Research Foundation; the Particle Physics and Astronomy Research Council and the Royal Society, UK; the Russian Foundation for Basic Research; the Comisión Interministerial de Ciencia y Tecnología, Spain; in part by the European Community's Human Potential Programme under contract HPRN-CT-2002-00292; the Academy of Finland; and the College of Science at Texas A&M University.
PY - 2006/9/15
Y1 - 2006/9/15
N2 - We report on the design and performance of the electromagnetic calorimeter timing readout system (EMTiming) for the Collider Detector at Fermilab (CDF). The system will be used in searches for rare events with high-energy photons to verify that the photon is in time with the event collision, to reject cosmic-ray and beam-halo backgrounds, and to allow direct searches for new, heavy, long-lived neutral particles that decay to photons. The installation and commissioning of all 862 channels were completed in Fall 2004 as part of an upgrade to the Run II version of the detector. Using in situ data, including electrons from W → e ν and Z → ee decays, we measure the energy threshold for a time to be recorded to be 3.8 ± 0.3 GeV(1.9 ± 0.1 GeV) in the central (plug) portion of the detector. Similarly, for the central (plug) portion we measure a timing resolution of 600 ± 10 ps(610 ± 10 ps) for electrons above 10 GeV (6 GeV). There are very few system pathologies such as recording a time when no energy is deposited, or recording a second, fake time for a single energy deposit.
AB - We report on the design and performance of the electromagnetic calorimeter timing readout system (EMTiming) for the Collider Detector at Fermilab (CDF). The system will be used in searches for rare events with high-energy photons to verify that the photon is in time with the event collision, to reject cosmic-ray and beam-halo backgrounds, and to allow direct searches for new, heavy, long-lived neutral particles that decay to photons. The installation and commissioning of all 862 channels were completed in Fall 2004 as part of an upgrade to the Run II version of the detector. Using in situ data, including electrons from W → e ν and Z → ee decays, we measure the energy threshold for a time to be recorded to be 3.8 ± 0.3 GeV(1.9 ± 0.1 GeV) in the central (plug) portion of the detector. Similarly, for the central (plug) portion we measure a timing resolution of 600 ± 10 ps(610 ± 10 ps) for electrons above 10 GeV (6 GeV). There are very few system pathologies such as recording a time when no energy is deposited, or recording a second, fake time for a single energy deposit.
KW - CDF
KW - Electromagnetic calorimeter
KW - Timing
UR - http://www.scopus.com/inward/record.url?scp=33748045830&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2006.06.011
DO - 10.1016/j.nima.2006.06.011
M3 - Article
AN - SCOPUS:33748045830
SN - 0168-9002
VL - 565
SP - 543
EP - 550
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
ER -