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The PRad windowless gas flow target

Publication ,  Journal Article
Pierce, J; Brock, J; Carlin, C; Keith, C; Maxwell, J; Meekins, D; Bai, X; Deur, A; Dutta, D; Gao, H; Gasparian, A; Gnanvo, K; Gu, C; Peng, C ...
Published in: Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
July 1, 2021
Published version (DOI)

We report on a windowless, high-density, gas-flow target at Jefferson Lab that was used to measure rp, the root-mean-square charge radius of the proton. The target achieved its design goal of an areal density of 2 × 1018 atoms/cm2, with the gas uniformly distributed over the 4 cm length of the cell and less than 1% residual gas outside the cell. This design eliminated scattering from the end caps of the target cell, a problem endemic to previous measurements of the proton charge radius in electron scattering experiments, and permitted a precise, model-independent extraction of rp by reaching unprecedentedly low values of Q2, the square of the electron's transfer of four-momentum to the proton.

Duke Scholars

Haiyan Gao
Author Haiyan Gao Physics

Published In

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment

DOI

10.1016/j.nima.2021.165300

ISSN

0168-9002

Publication Date

July 1, 2021

Volume

1003

Related Subject Headings

  • Nuclear & Particles Physics
  • 5106 Nuclear and plasma physics
  • 0299 Other Physical Sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

Citation

APA
Chicago
ICMJE
MLA
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Pierce, J., Brock, J., Carlin, C., Keith, C., Maxwell, J., Meekins, D., … Zhang, Y. (2021). The PRad windowless gas flow target. Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, 1003. https://doi.org/10.1016/j.nima.2021.165300
Pierce, J., J. Brock, C. Carlin, C. Keith, J. Maxwell, D. Meekins, X. Bai, et al. “The PRad windowless gas flow target.” Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 1003 (July 1, 2021). https://doi.org/10.1016/j.nima.2021.165300.
Pierce J, Brock J, Carlin C, Keith C, Maxwell J, Meekins D, et al. The PRad windowless gas flow target. Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment. 2021 Jul 1;1003.
Pierce, J., et al. “The PRad windowless gas flow target.” Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, vol. 1003, July 2021. Scopus, doi:10.1016/j.nima.2021.165300.
Pierce J, Brock J, Carlin C, Keith C, Maxwell J, Meekins D, Bai X, Deur A, Dutta D, Gao H, Gasparian A, Gnanvo K, Gu C, Higinbotham D, Khandaker M, Liyanage N, Meziane M, Pasyuk E, Peng C, Punjabi V, Xiong W, Yan X, Ye L, Zhang Y. The PRad windowless gas flow target. Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment. 2021 Jul 1;1003.
Journal cover image

Published In

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment

DOI

10.1016/j.nima.2021.165300

ISSN

0168-9002

Publication Date

July 1, 2021

Volume

1003

Related Subject Headings

  • Nuclear & Particles Physics
  • 5106 Nuclear and plasma physics
  • 0299 Other Physical Sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences