A conceptual design study of a Compact Photon Source (CPS) for Jefferson Lab

Day, D.; Degtiarenko, P.; Dobbs, S.; Ent, R.; Hamilton, D. J.; Horn, T.; Keller, D.; Keppel, C.; Niculescu, G.; Reid, P.; Strakovsky, I.; Wojtsekhowski, B.; Zhang, J.

doi:10.1016/j.nima.2020.163429

Title: A conceptual design study of a Compact Photon Source (CPS) for Jefferson Lab

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Abstract

This document describes the technical design concept of a compact high intensity, multi-GeV photon source. Capable of producing 10^12 equivalent photons per second this novel device will provide unprecedented access to physics processes with very small scattering probabilities such as hard exclusive reactions on the nucleon. When combined with dynamic nuclear polarized targets, its deployment will result in a large gain in polarized experiment figure-of-merit compared to all previous measurements. Compared to a traditional bremsstrahlung photon source the proposed concept presents several advantages, most significantly in providing a full intensity in a small spot at the target and in taking advantage of the narrow angular spread associated with high energy bremsstrahlung compare to the wide angular distribution of the secondary radiation to minimize the operational prompt and activation radiation dose rates.

Authors:: Day, D.; Degtiarenko, P.; Dobbs, S.; Ent, R.; Hamilton, D. J.; Horn, T.; Keller, D.; Keppel, C.; Niculescu, G.; Reid, P.; Strakovsky, I.; Wojtsekhowski, B.; Zhang, J.

Publication Date:: 2020-03-01

Research Org.:: George Washington Univ., Washington, DC (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 1596394

Alternate Identifier(s):: OSTI ID: 1592813; OSTI ID: 1595187; OSTI ID: 1596653

Report Number(s):: JLAB-PHY-20-3127; DOE/OR/23177-4887; 1912.07355
Journal ID: ISSN 0168-9002; S0168900220300322; 163429; PII: S0168900220300322

Grant/Contract Number:: FG02-96ER40950; AC05-06OR23177; SC0016583; PHY-1306227; 1913257; PHY-1714133; ST/P004458/1

Resource Type:: Published Article

Journal Name:: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

Additional Journal Information:: Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Journal Volume: 957 Journal Issue: C; Journal ID: ISSN 0168-9002

Publisher:: Elsevier

Country of Publication:: Netherlands

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; photon source; Hadronic physics; Radiation dose; Tungsten powder shield

Citation Formats


                    Day, D., Degtiarenko, P., Dobbs, S., Ent, R., Hamilton, D. J., Horn, T., Keller, D., Keppel, C., Niculescu, G., Reid, P., Strakovsky, I., Wojtsekhowski, B., and Zhang, J.. A conceptual design study of a Compact Photon Source (CPS) for Jefferson Lab.  Netherlands: N. p., 2020. 
Web.  doi:10.1016/j.nima.2020.163429.

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                    Day, D., Degtiarenko, P., Dobbs, S., Ent, R., Hamilton, D. J., Horn, T., Keller, D., Keppel, C., Niculescu, G., Reid, P., Strakovsky, I., Wojtsekhowski, B., & Zhang, J.. A conceptual design study of a Compact Photon Source (CPS) for Jefferson Lab.  Netherlands.  https://doi.org/10.1016/j.nima.2020.163429

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                    Day, D., Degtiarenko, P., Dobbs, S., Ent, R., Hamilton, D. J., Horn, T., Keller, D., Keppel, C., Niculescu, G., Reid, P., Strakovsky, I., Wojtsekhowski, B., and Zhang, J.. Sun .  
"A conceptual design study of a Compact Photon Source (CPS) for Jefferson Lab".  Netherlands.  https://doi.org/10.1016/j.nima.2020.163429.

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@article{osti_1596394,

  title        = {A conceptual design study of a Compact Photon Source (CPS) for Jefferson Lab},

  author       = {Day, D. and Degtiarenko, P. and Dobbs, S. and Ent, R. and Hamilton, D. J. and Horn, T. and Keller, D. and Keppel, C. and Niculescu, G. and Reid, P. and Strakovsky, I. and Wojtsekhowski, B. and Zhang, J.},

  abstractNote = {This document describes the technical design concept of a compact high intensity, multi-GeV photon source. Capable of producing 10^12 equivalent photons per second this novel device will provide unprecedented access to physics processes with very small scattering probabilities such as hard exclusive reactions on the nucleon. When combined with dynamic nuclear polarized targets, its deployment will result in a large gain in polarized experiment figure-of-merit compared to all previous measurements. Compared to a traditional bremsstrahlung photon source the proposed concept presents several advantages, most significantly in providing a full intensity in a small spot at the target and in taking advantage of the narrow angular spread associated with high energy bremsstrahlung compare to the wide angular distribution of the secondary radiation to minimize the operational prompt and activation radiation dose rates.},

  doi          = {10.1016/j.nima.2020.163429},

  journal      = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},

  number       = C,

  volume       = 957,

  place        = {Netherlands},

  year         = {2020},

  month        = {3}

}

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