Results of L3 BGO calorimeter calibration using an RFQ accelerator

Author

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

Author_Institution

Dept. of Phys., California Inst. of Technol., Pasadena, CA, USA

Volume

1

fYear

1998

fDate

1998

Firstpage

55

Abstract

A novel calibration system based on a radio-frequency-quadrupole (RFQ) accelerator has been installed in the L3 experiment. Radiative capture of 1.85 MeV protons from the RFQ accelerator in a lithium target produces a high-intensity flux of 17.6 MeV photons which are used to calibrate 11,000 crystals of the L3 BGO calorimeter. In this paper, we present results of the first fully successful RFQ run, taken in November 1997. We achieved a calibration precision of 0.6% in the barrel and 0.7% in the endcaps of the L3 BGO calorimeter. The RFQ-97 calibration proved to be the best one of all calibration techniques used in the L3 experiment

Keywords

bismuth compounds; calibration; particle calorimetry; solid scintillation detectors; 1.85 MeV; 17.6 MeV; Bi₄Ge₃O₁₂; L3 BGO calorimeter calibration; Li target; RFQ accelerator; high-intensity photon flux; proton radiative capture; radiofrequency-quadrupole accelerator; Acceleration; Calibration; Detectors; Energy resolution; Laboratories; Lithium; Particle beams; Photonic crystals; Proton accelerators; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium, 1998. Conference Record. 1998 IEEE

Conference_Location

Toronto, Ont.

ISSN

1082-3654

Print_ISBN

0-7803-5021-9

Type

conf

DOI

10.1109/NSSMIC.1998.774808

Filename

774808