Calibration of the L3 BGO calorimeter using an RFQ accelerator

U. Chaturvedi, A. Favara, M. Gataullin, G. Gratta, D. Kirkby, W. Lu, H. Newman, A. Shvorob, Christopher George Tully, R. Zhu

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

An improved calibration technique based on a radio-frequency-quadrupole (RFQ) accelerator is presented. A high-intensity flux of 17.6MeV photons, produced by radiative capture of 1.85MeV protons from the RFQ in a lithium target, is used to calibrate in situ 11000 crystals of the L3 BGO calorimeter. We present results obtained for the calibration of 1997-1999 L3 data samples. For the first time a calibration precision better than 0.5% is reached for the entire BGO calorimeter. The importance of such a technique is also outlined in view of extensive use of crystal calorimetry at the LHC.

Original languageEnglish (US)
Pages (from-to)376-377
Number of pages2
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume461
Issue number1-3
DOIs
StatePublished - Apr 1 2001

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

Keywords

  • BGO calorimeter
  • Calibration

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