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Precision Timing Measurements for High Energy Photons

Anderson, Dustin and Apreysan, Artur and Bornheim, Adi and Duarte, Javier and Newman, Harvey and Pena, Cristian and Ronzhin, Anatoly and Spiropulu, Maria and Trevor, Jason and Xie, Si and Zhu, Ren-Yuan (2015) Precision Timing Measurements for High Energy Photons. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 787 . pp. 94-97. ISSN 0168-9002. http://resolver.caltech.edu/CaltechAUTHORS:20140915-201732745

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Abstract

Particle colliders operating at high luminosities present challenging environments for high energy physics event reconstruction and analysis. We discuss how timing information, with a precision on the order of 10 ps, can aid in the reconstruction of physics events under such conditions. We present calorimeter based timing measurements from test beam experiments in which we explore the ultimate timing precision achievable for high energy photons or electrons of 10 GeV and above. Using a prototype calorimeter consisting of a 1.7×1.7×1.7 cm^3 lutetium–yttrium oxyortho-silicate (LYSO) crystal cube, read out by micro-channel plate photomultipliers, we demonstrate a time resolution of 33.5±2.1 ps for an incoming beam energy of 32 GeV. In a second measurement, using a 2.5×2.5×20 cm^3 LYSO crystal placed perpendicularly to the electron beam, we achieve a time resolution of 59±11 ps using a beam energy of 4 GeV. We also present timing measurements made using a shashlik-style calorimeter cell made of LYSO and tungsten plates, and demonstrate that the apparatus achieves a time resolution of 54±5 ps for an incoming beam energy of 32 GeV.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/j.nima.2014.11.041DOIArticle
http://www.sciencedirect.com/science/article/pii/S0168900214013291PublisherArticle
Contact Email Address:djanders@caltech.edu
Additional Information:© 2014 Published by Elsevier B.V. Available online 20 November 2014.
Group:CMS@Caltech
Subject Keywords:Precision timing; Calorimetry; High energy physics; Picosecond
Record Number:CaltechAUTHORS:20140915-201732745
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140915-201732745
Official Citation:Dustin Anderson, Artur Apreysan, Adi Bornheim, Javier Duarte, Harvey Newman, Cristian Pena, Anatoly Ronzhin, Maria Spiropulu, Jason Trevor, Si Xie, Ren-Yuan Zhu, Precision timing measurements for high energy photons, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 787, 1 July 2015, Pages 94-97, ISSN 0168-9002, http://dx.doi.org/10.1016/j.nima.2014.11.041. (http://www.sciencedirect.com/science/article/pii/S0168900214013291)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49733
Collection:CaltechAUTHORS
Deposited By: SWORD User
Deposited On:16 Sep 2014 21:31
Last Modified:11 Jun 2015 19:28

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