dorsal/arxiv
View SchemaThe Timing System for the CDF Electromagnetic Calorimeters
| Authors | M. Goncharov, T. Kamon, V. Khotilovich, V. Krutelyov, S. W. Lee, D. Toback, P. Wagner, H. Frisch, H. Sanders, M. Cordelli, F. Happacher, S. Miscetti, R. Wagner |
|---|---|
| Categories | |
| ArXiv ID | physics/0512171 |
| URL | https://arxiv.org/abs/physics/0512171 |
| DOI | 10.1016/j.nima.2006.06.011 |
| Journal | Nucl.Instrum.Meth.A565:543-550,2006 |
Abstract
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 particles that decay to photons. The installation and commissioning of all 862 channels was 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 nu and Z => ee decays, we measure the energy threshold for a time to be recorded to be 3.8 \pm 0.3GeV in the central portion of the detector and 1.9 \pm 0.1 GeV in the plug portion. Similarly, we measure a timing resolution of 600 \pm 10 ps and 610 \pm 10 ps for electrons above 10 GeV and 6 GeV respectively. 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.
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"abstract": "We report on the design and performance of the electromagnetic calorimeter\ntiming readout system (EMTiming) for the Collider Detector at Fermilab (CDF).\nThe system will be used in searches for rare events with high energy photons to\nverify that the photon is in time with the event collision, to reject cosmic\nray and beam halo backgrounds, and to allow direct searches for new heavy\nlong-lived particles that decay to photons. The installation and commissioning\nof all 862 channels was completed in Fall 2004 as part of an upgrade to the Run\nII version of the detector. Using in-situ data, including electrons from W=\u003ee\nnu and Z =\u003e ee decays, we measure the energy threshold for a time to be\nrecorded to be 3.8 \\pm 0.3GeV in the central portion of the detector and 1.9\n\\pm 0.1 GeV in the plug portion. Similarly, we measure a timing resolution of\n600 \\pm 10 ps and 610 \\pm 10 ps for electrons above 10 GeV and 6 GeV\nrespectively. There are very few system pathologies such as recording a time\nwhen no energy is deposited, or recording a second, fake time for a single\nenergy deposit.",
"arxiv_id": "physics/0512171",
"authors": [
"M. Goncharov",
"T. Kamon",
"V. Khotilovich",
"V. Krutelyov",
"S. W. Lee",
"D. Toback",
"P. Wagner",
"H. Frisch",
"H. Sanders",
"M. Cordelli",
"F. Happacher",
"S. Miscetti",
"R. Wagner"
],
"categories": [
"physics.ins-det"
],
"doi": "10.1016/j.nima.2006.06.011",
"journal_ref": "Nucl.Instrum.Meth.A565:543-550,2006",
"title": "The Timing System for the CDF Electromagnetic Calorimeters",
"url": "https://arxiv.org/abs/physics/0512171"
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