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Title: The electromagnetic calorimeter in JLab Real Compton Scattering Experiment

Abstract

A hodoscope calorimeter comprising of 704 lead-glass blocks is described. The calorimeter was constructed for use in the JLab Real Compton Scattering experiment. The detector provides a measurement of the coordinates and the energy of scattered photons in the GeV energy range with resolutions of 5 mm and 6\%/$$\sqrt{E_\gamma \, [GeV]}$$, respectively. Design features and performance parameters during the experiment are presented.

Authors:
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Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA
Sponsoring Org.:
USDOE - Office of Energy Research (ER)
OSTI Identifier:
902112
Report Number(s):
JLAB-PHY-07-633; DOE/ER/40150-4254
TRN: US0702792
DOE Contract Number:
AC05-84ER40150
Resource Type:
Journal Article
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CALORIMETERS; COMPTON EFFECT; DESIGN; ENERGY RANGE; HODOSCOPES; PERFORMANCE; PHOTONS

Citation Formats

Albert Shahinyan, Eugene Chudakov, A. Danagoulian, P. Degtyarenko, K. Egiyan, V. Gorbenko, J. Hines, E. Hovhannisyan, Ch. Hyde, C.W. de Jager, A. Ketikyan, V. Mamyan, R. Michaels, A.M. Nathan, V. Nelyubin, I. Rachek, M. Roedelbrom, A. Petrosyan, R. Pomatsalyuk, V. Popov, J. Segal, Yu. Shestakov, J. Templon, H. Voskanyan, and B. Wojtsekhowski. The electromagnetic calorimeter in JLab Real Compton Scattering Experiment. United States: N. p., 2007. Web.
Albert Shahinyan, Eugene Chudakov, A. Danagoulian, P. Degtyarenko, K. Egiyan, V. Gorbenko, J. Hines, E. Hovhannisyan, Ch. Hyde, C.W. de Jager, A. Ketikyan, V. Mamyan, R. Michaels, A.M. Nathan, V. Nelyubin, I. Rachek, M. Roedelbrom, A. Petrosyan, R. Pomatsalyuk, V. Popov, J. Segal, Yu. Shestakov, J. Templon, H. Voskanyan, & B. Wojtsekhowski. The electromagnetic calorimeter in JLab Real Compton Scattering Experiment. United States.
Albert Shahinyan, Eugene Chudakov, A. Danagoulian, P. Degtyarenko, K. Egiyan, V. Gorbenko, J. Hines, E. Hovhannisyan, Ch. Hyde, C.W. de Jager, A. Ketikyan, V. Mamyan, R. Michaels, A.M. Nathan, V. Nelyubin, I. Rachek, M. Roedelbrom, A. Petrosyan, R. Pomatsalyuk, V. Popov, J. Segal, Yu. Shestakov, J. Templon, H. Voskanyan, and B. Wojtsekhowski. Mon . "The electromagnetic calorimeter in JLab Real Compton Scattering Experiment". United States. doi:. https://www.osti.gov/servlets/purl/902112.
@article{osti_902112,
title = {The electromagnetic calorimeter in JLab Real Compton Scattering Experiment},
author = {Albert Shahinyan and Eugene Chudakov and A. Danagoulian and P. Degtyarenko and K. Egiyan and V. Gorbenko and J. Hines and E. Hovhannisyan and Ch. Hyde and C.W. de Jager and A. Ketikyan and V. Mamyan and R. Michaels and A.M. Nathan and V. Nelyubin and I. Rachek and M. Roedelbrom and A. Petrosyan and R. Pomatsalyuk and V. Popov and J. Segal and Yu. Shestakov and J. Templon and H. Voskanyan and B. Wojtsekhowski},
abstractNote = {A hodoscope calorimeter comprising of 704 lead-glass blocks is described. The calorimeter was constructed for use in the JLab Real Compton Scattering experiment. The detector provides a measurement of the coordinates and the energy of scattered photons in the GeV energy range with resolutions of 5 mm and 6\%/$\sqrt{E_\gamma \, [GeV]}$, respectively. Design features and performance parameters during the experiment are presented.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Apr 16 00:00:00 EDT 2007},
month = {Mon Apr 16 00:00:00 EDT 2007}
}
  • A lead–glass hodoscope calorimeter that was constructed for use in the Jefferson Lab Real Compton Scattering experiment is described. The detector provides a measurement of the coordinates and the energy of scattered photons in the GeV energy range with resolutions of 5 mm and 6%/View the MathML source. Features of both the detector design and its performance in the high luminosity environment during the experiment are presented.
  • We built and commissioned a new type of Compton polarimeter to measure the electron beam polarization at the Thomas Jefferson National Accelerator Facility (Virginia, USA). The heart of this polarimeter is a high-finesse monolithic Fabry-Perot cavity. Its purpose is to amplify a primary 300 mW laser beam in order to improve the signal to noise ratio of the polarimeter. It is the first time that a high-finesse Fabry-Perot cavity is enclosed in the vacuum of a particle accelerator to monitor the beam polarization by Compton polarimetry. The measured finesse and amplification gain of the cavity are F=26000 and G=7300. Themore » electron beam crosses this high-power photon source at an angle of 23 mrad in the middle of the cavity where the photon beam power density is estimated to be 0.85MW/cm2. We have used this facility during the HAPPEX experiment (April-July 1999) and we give a preliminary measurement of Compton scattering asymmetry.« less
  • We built and commissioned a new type of Compton polarimeter to measure the electron beam polarization at the Thomas Jefferson National Accelerator Facility (Virginia, USA). The heart of this polarimeter is a high-finesse monolithic Fabry-Perot cavity. Its purpose is to amplify a primary 300 mW laser beam in order to improve the signal to noise ratio of the polarimeter. It is the first time that a high-finesse Fabry-Perot cavity is enclosed in the vacuum of a particle accelerator to monitor the beam polarization by Compton polarimetry. The measured finesse and amplification gain of the cavity are F=26000 and G=7300. Themore » electron beam crosses this high-power photon source at an angle of 23 mrad in the middle of the cavity where the photon beam power density is estimated to be 0.85MW/cm2. We have used this facility during the HAPPEX experiment (April-July 1999) and we give a preliminary measurement of Compton scattering asymmetry.« less