The CLAS12 forward electromagnetic calorimeter

G. Asryan; Sh Chandavar; T. Chetry; N. Compton; A. Daniel; N. Dashyan; N. Gevorgyan; Y. Ghandilyan; K. Giovanetti; K. Griffioen; K. Hicks; D. Kashy; G. Khachatryan; M. Khandaker; W. Phelps; J. Riso; A. Simonyan; C. Salgado; C. Smith; S. Stepanyan; W. Tang; H. Voskanyan; M. Yurov

doi:10.1016/j.nima.2020.163425

The CLAS12 forward electromagnetic calorimeter

G. Asryan, Sh Chandavar, T. Chetry, N. Compton, A. Daniel, N. Dashyan, N. Gevorgyan, Y. Ghandilyan, K. Giovanetti, K. Griffioen, K. Hicks, D. Kashy, G. Khachatryan, M. Khandaker, W. Phelps, J. Riso, A. Simonyan, C. Salgado, C. Smith, S. StepanyanW. Tang, H. Voskanyan, M. Yurov

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

The CLAS12 Forward Detector includes six independent lead-scintillator electromagnetic sampling calorimeters to provide the primary electron trigger and extend the CLAS12 detection capability to photons and neutrons. Each calorimeter package consists of two modules, the legacy Electromagnetic Calorimeter (EC) previously used in the CLAS detector, and a new pre-shower calorimeter (PCAL) located in front of the EC to extend the total detector radiation length, in order to fully absorb the electromagnetic showers induced by electrons with energies up to 12 GeV. Both calorimeters use a novel triangular hodoscope geometry with stereo readout. The PCAL uses an upgraded design to provide the high spatial resolution necessary for reconstructing π⁰ and η decays, and neutrons with high efficiency. This paper treats the design, construction, and calibration of the PCAL and the preliminary combined performance of both detectors.

Original language	English
Article number	163425
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	959
DOIs	https://doi.org/10.1016/j.nima.2020.163425
State	Published - Apr 11 2020
Externally published	Yes

Funding

Thanks to F.-X. Girod for the use of his preliminary analysis of energy corrections. Acknowledgments go to the Hall B engineering and technical staff for their careful attention to the design, transportation, and installation of the PCAL modules. This material is based upon work supported by the U.S. Department of Energy , Office of Nuclear Physics Division, under contract No. DE-AC05-06OR23177 and was also supported by the National Science Foundation, USA Major Research Instrumentation Project (MRI) grant PHY-0821173 .

Keywords

CLAS12
Particle identification
Plastic scintillator
Sampling calorimeter

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10.1016/j.nima.2020.163425

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Asryan, G., Chandavar, S., Chetry, T., Compton, N., Daniel, A., Dashyan, N., Gevorgyan, N., Ghandilyan, Y., Giovanetti, K., Griffioen, K., Hicks, K., Kashy, D., Khachatryan, G., Khandaker, M., Phelps, W., Riso, J., Simonyan, A., Salgado, C., Smith, C., ... Yurov, M. (2020). The CLAS12 forward electromagnetic calorimeter. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 959, Article 163425. https://doi.org/10.1016/j.nima.2020.163425

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abstract = "The CLAS12 Forward Detector includes six independent lead-scintillator electromagnetic sampling calorimeters to provide the primary electron trigger and extend the CLAS12 detection capability to photons and neutrons. Each calorimeter package consists of two modules, the legacy Electromagnetic Calorimeter (EC) previously used in the CLAS detector, and a new pre-shower calorimeter (PCAL) located in front of the EC to extend the total detector radiation length, in order to fully absorb the electromagnetic showers induced by electrons with energies up to 12 GeV. Both calorimeters use a novel triangular hodoscope geometry with stereo readout. The PCAL uses an upgraded design to provide the high spatial resolution necessary for reconstructing π0 and η decays, and neutrons with high efficiency. This paper treats the design, construction, and calibration of the PCAL and the preliminary combined performance of both detectors.",

keywords = "CLAS12, Particle identification, Plastic scintillator, Sampling calorimeter",

author = "G. Asryan and Sh Chandavar and T. Chetry and N. Compton and A. Daniel and N. Dashyan and N. Gevorgyan and Y. Ghandilyan and K. Giovanetti and K. Griffioen and K. Hicks and D. Kashy and G. Khachatryan and M. Khandaker and W. Phelps and J. Riso and A. Simonyan and C. Salgado and C. Smith and S. Stepanyan and W. Tang and H. Voskanyan and M. Yurov",

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year = "2020",

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day = "11",

doi = "10.1016/j.nima.2020.163425",

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Asryan, G, Chandavar, S, Chetry, T, Compton, N, Daniel, A, Dashyan, N, Gevorgyan, N, Ghandilyan, Y, Giovanetti, K, Griffioen, K, Hicks, K, Kashy, D, Khachatryan, G, Khandaker, M, Phelps, W, Riso, J, Simonyan, A, Salgado, C, Smith, C, Stepanyan, S, Tang, W, Voskanyan, H & Yurov, M 2020, 'The CLAS12 forward electromagnetic calorimeter', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 959, 163425. https://doi.org/10.1016/j.nima.2020.163425

TY - JOUR

T1 - The CLAS12 forward electromagnetic calorimeter

AU - Asryan, G.

AU - Chandavar, Sh

AU - Chetry, T.

AU - Compton, N.

AU - Daniel, A.

AU - Dashyan, N.

AU - Gevorgyan, N.

AU - Ghandilyan, Y.

AU - Giovanetti, K.

AU - Griffioen, K.

AU - Hicks, K.

AU - Kashy, D.

AU - Khachatryan, G.

AU - Khandaker, M.

AU - Phelps, W.

AU - Riso, J.

AU - Simonyan, A.

AU - Salgado, C.

AU - Smith, C.

AU - Stepanyan, S.

AU - Tang, W.

AU - Voskanyan, H.

AU - Yurov, M.

PY - 2020/4/11

Y1 - 2020/4/11

N2 - The CLAS12 Forward Detector includes six independent lead-scintillator electromagnetic sampling calorimeters to provide the primary electron trigger and extend the CLAS12 detection capability to photons and neutrons. Each calorimeter package consists of two modules, the legacy Electromagnetic Calorimeter (EC) previously used in the CLAS detector, and a new pre-shower calorimeter (PCAL) located in front of the EC to extend the total detector radiation length, in order to fully absorb the electromagnetic showers induced by electrons with energies up to 12 GeV. Both calorimeters use a novel triangular hodoscope geometry with stereo readout. The PCAL uses an upgraded design to provide the high spatial resolution necessary for reconstructing π0 and η decays, and neutrons with high efficiency. This paper treats the design, construction, and calibration of the PCAL and the preliminary combined performance of both detectors.

AB - The CLAS12 Forward Detector includes six independent lead-scintillator electromagnetic sampling calorimeters to provide the primary electron trigger and extend the CLAS12 detection capability to photons and neutrons. Each calorimeter package consists of two modules, the legacy Electromagnetic Calorimeter (EC) previously used in the CLAS detector, and a new pre-shower calorimeter (PCAL) located in front of the EC to extend the total detector radiation length, in order to fully absorb the electromagnetic showers induced by electrons with energies up to 12 GeV. Both calorimeters use a novel triangular hodoscope geometry with stereo readout. The PCAL uses an upgraded design to provide the high spatial resolution necessary for reconstructing π0 and η decays, and neutrons with high efficiency. This paper treats the design, construction, and calibration of the PCAL and the preliminary combined performance of both detectors.

KW - CLAS12

KW - Particle identification

KW - Plastic scintillator

KW - Sampling calorimeter

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M3 - Article

AN - SCOPUS:85078123829

SN - 0168-9002

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JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

M1 - 163425

ER -

The CLAS12 forward electromagnetic calorimeter

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