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 language | English (US) |
---|---|
Pages (from-to) | 376-377 |
Number of pages | 2 |
Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
Volume | 461 |
Issue number | 1-3 |
DOIs | |
State | Published - Apr 1 2001 |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Instrumentation
Keywords
- BGO calorimeter
- Calibration