Experience With the Resistive Plate Chamber in the BaBar Experiment

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The BABAR detector has operated nearly 200 Resistive Plate Chambers (RPCs), constructed as part of an upgrade of the forward endcap muon detector, for the past two years. The RPCs experience widely different background and luminosity-driven singles rates (0.01-10 Hz/cm{sup 2}) depending on position within the endcap. Some regions have integrated over 0.3 C/cm{sup 2}. RPC efficiency measured with cosmic rays and beam is high and stable. However, a few of the highest rate RPCs have suffered efficiency losses of 5-15%. Although constructed with improved techniques many of the RPCs, which are operated in streamer mode, have shown increased dark ... continued below

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5 pages

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Bellini, F. & /Rome U. /INFN, Rome November 15, 2006.

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The BABAR detector has operated nearly 200 Resistive Plate Chambers (RPCs), constructed as part of an upgrade of the forward endcap muon detector, for the past two years. The RPCs experience widely different background and luminosity-driven singles rates (0.01-10 Hz/cm{sup 2}) depending on position within the endcap. Some regions have integrated over 0.3 C/cm{sup 2}. RPC efficiency measured with cosmic rays and beam is high and stable. However, a few of the highest rate RPCs have suffered efficiency losses of 5-15%. Although constructed with improved techniques many of the RPCs, which are operated in streamer mode, have shown increased dark currents and noise rates that are correlated with the direction of the gas flow and the integrated current.

Physical Description

5 pages

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  • Prepared for 9th ICATPP Conference on Astroparticle, Particle, Space Physics, Detectors and Medical Physics Applications, Villa Erba, Como, Italy, 17-21 Oct 2005

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  • Report No.: SLAC-PUB-12204
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 895276
  • Archival Resource Key: ark:/67531/metadc878348

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Office of Scientific & Technical Information Technical Reports

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  • November 15, 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 7, 2016, 11:21 a.m.

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Bellini, F. & /Rome U. /INFN, Rome. Experience With the Resistive Plate Chamber in the BaBar Experiment, article, November 15, 2006; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc878348/: accessed October 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.