Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2017, Vol. 28 ›› Issue (11): 155 doi: 10.1007/s41365-017-0320-x

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Energy calibration of laterally segmented electromagnetic calorimeters based on neutral pion detection

Malek Mazouz   

  1. Faculte´ des Sciences de Monastir, 5000 Monastir, Tunisia
  • Contact: Malek Mazouz E-mail:mazouz@jlab.org
Malek Mazouz. Energy calibration of laterally segmented electromagnetic calorimeters based on neutral pion detection.Nuclear Science and Techniques, 2017, 28(11): 155     doi: 10.1007/s41365-017-0320-x
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Abstract:

This paper describes a method for energy calibration of laterally segmented electromagnetic calorimeters based on the detection of two-photon decays of π0 mesons. The calibration procedure performs a χ2 function minimization between the measured π0 energy in the calorimeter and its expected energy deduced from the π0 momentum direction. The performance of this technique is demonstrated with a Monte Carlo simulation of an experimental case where biased calibration coefficients are employed. The real calibration coefficients are restored with less than 1% relative accuracy when a sufficient number of π0 is detected. This technique is applied to monitor daily the calibration coefficients of the calorimeter used in the Jefferson Lab Hall A DVCS experiments.

Key words: Electromagnetic calorimeters, Energy calibration, Detector modeling and simulations, Data processing methods