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Title: The lead-glass electromagnetic calorimeters for the magnetic spectrometers in Hall C at Jefferson Lab

Abstract

The electromagnetic calorimeters of the various magnetic spectrometers in Hall C at Jefferson Lab are presented. For the existing HMS and SOS spectrometers design considerations, relevant construction information, and comparisons of simulated and experimental results are included. The energy resolution of the HMS and SOS calorimeters is better than $$\sigma/E \sim 6%/\sqrt E $$, and pion/electron ($$\pi/e$$) separation of about 100:1 has been achieved in energy range 1 -- 5 GeV. Good agreement has been observed between the experimental and simulated energy resolutions, but simulations systematically exceed experimentally determined $$\pi^-$$ suppression factors by close to a factor of two. For the SHMS spectrometer presently under construction details on the design and accompanying GEANT4 simulation efforts are given. The anticipated performance of the new calorimeter is predicted over the full momentum range of the SHMS. Good electron/hadron separation is anticipated by combining the energy deposited in an initial (preshower) calorimeter layer with the total energy deposited in the calorimeter.

Authors:
 [1];  [2];  [3];  [4];  [3];  [5];  [6];  [2];  [2];  [2];  [7];  [2];  [8];  [2];  [9];  [3];  [10];  [11];  [12];  [2] more »;  [3] « less
+ Show Author Affiliations
  1. Yerevan Physics Institute, JLAB
  2. JLAB
  3. Yerevan Physics Institute
  4. ANL
  5. Hampton U.
  6. Mississippi State U.
  7. Catholic University of America, JLAB
  8. JLAB, Hampton U.
  9. Triangle Universities Nuclear Laboratory and Duke University
  10. James Madison U.
  11. MIT
  12. University of Manitoba
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1079212
Report Number(s):
JLAB-PHY-12-1524; DOE/OR/23177-2097; arXiv:1204.6413
DOE Contract Number:  
AC05-06OR23177
Resource Type:
Journal Article
Journal Name:
Nucl.Instr.Meth.A
Additional Journal Information:
Journal Volume: 719
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Mkrtchyan, Hamlet, Carlini, Roger D., Tadevosyan, Vardan H., Arrington, John Robert, Asaturyan, Arshak Razmik, Christy, Michael Eric, Dutta, Dipangkar, Ent, Rolf, Fenker, Howard C., Gaskell, David J., Horn, Tanja, Jones, Mark K., Keppel, Cynthia, Mack, David J., Malace, Simona P., Mkrtchyan, Arthur, Niculescu, Maria-Ioana, Seely, Charles Jason, Tvaskis, Vladas, Wood, Stephen A., and Zhamkochyan, Simon. The lead-glass electromagnetic calorimeters for the magnetic spectrometers in Hall C at Jefferson Lab. United States: N. p., 2013. Web. doi:10.1016/j.nima.2013.03.070.
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Mkrtchyan, Hamlet, Carlini, Roger D., Tadevosyan, Vardan H., Arrington, John Robert, Asaturyan, Arshak Razmik, Christy, Michael Eric, Dutta, Dipangkar, Ent, Rolf, Fenker, Howard C., Gaskell, David J., Horn, Tanja, Jones, Mark K., Keppel, Cynthia, Mack, David J., Malace, Simona P., Mkrtchyan, Arthur, Niculescu, Maria-Ioana, Seely, Charles Jason, Tvaskis, Vladas, Wood, Stephen A., & Zhamkochyan, Simon. The lead-glass electromagnetic calorimeters for the magnetic spectrometers in Hall C at Jefferson Lab. United States. https://doi.org/10.1016/j.nima.2013.03.070
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Mkrtchyan, Hamlet, Carlini, Roger D., Tadevosyan, Vardan H., Arrington, John Robert, Asaturyan, Arshak Razmik, Christy, Michael Eric, Dutta, Dipangkar, Ent, Rolf, Fenker, Howard C., Gaskell, David J., Horn, Tanja, Jones, Mark K., Keppel, Cynthia, Mack, David J., Malace, Simona P., Mkrtchyan, Arthur, Niculescu, Maria-Ioana, Seely, Charles Jason, Tvaskis, Vladas, Wood, Stephen A., and Zhamkochyan, Simon. 2013. "The lead-glass electromagnetic calorimeters for the magnetic spectrometers in Hall C at Jefferson Lab". United States. https://doi.org/10.1016/j.nima.2013.03.070.
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@article{osti_1079212,
title = {The lead-glass electromagnetic calorimeters for the magnetic spectrometers in Hall C at Jefferson Lab},
author = {Mkrtchyan, Hamlet and Carlini, Roger D. and Tadevosyan, Vardan H. and Arrington, John Robert and Asaturyan, Arshak Razmik and Christy, Michael Eric and Dutta, Dipangkar and Ent, Rolf and Fenker, Howard C. and Gaskell, David J. and Horn, Tanja and Jones, Mark K. and Keppel, Cynthia and Mack, David J. and Malace, Simona P. and Mkrtchyan, Arthur and Niculescu, Maria-Ioana and Seely, Charles Jason and Tvaskis, Vladas and Wood, Stephen A. and Zhamkochyan, Simon},
abstractNote = {The electromagnetic calorimeters of the various magnetic spectrometers in Hall C at Jefferson Lab are presented. For the existing HMS and SOS spectrometers design considerations, relevant construction information, and comparisons of simulated and experimental results are included. The energy resolution of the HMS and SOS calorimeters is better than $\sigma/E \sim 6%/\sqrt E $, and pion/electron ($\pi/e$) separation of about 100:1 has been achieved in energy range 1 -- 5 GeV. Good agreement has been observed between the experimental and simulated energy resolutions, but simulations systematically exceed experimentally determined $\pi^-$ suppression factors by close to a factor of two. For the SHMS spectrometer presently under construction details on the design and accompanying GEANT4 simulation efforts are given. The anticipated performance of the new calorimeter is predicted over the full momentum range of the SHMS. Good electron/hadron separation is anticipated by combining the energy deposited in an initial (preshower) calorimeter layer with the total energy deposited in the calorimeter.},
doi = {10.1016/j.nima.2013.03.070},
url = {https://www.osti.gov/biblio/1079212}, journal = {Nucl.Instr.Meth.A},
number = ,
volume = 719,
place = {United States},
year = {Thu Aug 01 00:00:00 EDT 2013},
month = {Thu Aug 01 00:00:00 EDT 2013}
}
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Journal Article:
https://doi.org/10.1016/j.nima.2013.03.070
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