Design and operation of a windowless gas target internal to a solenoidal magnet for use with a megawatt electron beam

S. Lee; R. Corliss; I. Friščić; R. Alarcon; S. Aulenbacher; J. Balewski; S. Benson; J.C. Bernauer; J. Bessuille; J. Boyce; J. Coleman; D. Douglas; C.S. Epstein; P. Fisher; S. Frierson; M. Garçon; J. Grames; D. Hasell; C. Hernandez-Garcia; E. Ihloff; R. Johnston; K. Jordan; R. Kazimi; J. Kelsey; M. Kohl; A. Liyanage; M. McCaughan; R.G. Milner; P. Moran; J. Nazeer; D. Palumbo; M. Poelker; G. Randall; S.G. Steadman; C. Tennant; C. Tschalär; C. Vidal; C. Vogel; Y. Wang; S. Zhang; Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

doi:10.1016/j.nima.2019.05.071

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Design and operation of a windowless gas target internal to a solenoidal magnet for use with a megawatt electron beam

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Design and operation of a windowless gas target internal to a solenoidal magnet for use with a megawatt electron beam

S. Lee, R. Corliss, I. Friščić, R. Alarcon, S. Aulenbacher, J. Balewski, S. Benson, J.C. Bernauer, J. Bessuille, J. Boyce, …

Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, Vol.939(C), pp.46-54

01/01/2019

DOI: https://doi.org/10.1016/j.nima.2019.05.071

Abstract

COMSOL

Dark photon

DarkLight

Windowless gas target

A windowless hydrogen gas target of nominal thickness 1019 cm−2 is an essential component of the DarkLight experiment, which is designed to utilize the megawatt electron beam at an Energy Recovery Linac (ERL). The design of such a target is challenging because the pressure drops by many orders of magnitude between the central, high-density section of the target and the surrounding beamline, resulting in laminar, transitional, and finally molecular flow regimes. The target system was assembled and operated at Jefferson Lab’s Low Energy Recirculator Facility (LERF) in 2016, and subsequently underwent several revisions and calibration tests at MIT Bates in 2017. The system at dynamic equilibrium was simulated in COMSOL to provide a better understanding of its optimal operation at other working points. We have determined that a windowless gas target with sufficiently high density for DarkLight’s experimental needs is feasible in an ERL environment.

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Title: Design and operation of a windowless gas target internal to a solenoidal magnet for use with a megawatt electron beam
Creators - without role: S. Lee - Massachusetts Institute of Technology
R. Corliss - Massachusetts Institute of Technology
I. Friščić - Massachusetts Institute of Technology
R. Alarcon - Arizona State University
S. Aulenbacher - Johannes Gutenberg University Mainz
J. Balewski - Massachusetts Institute of Technology
S. Benson - Thomas Jefferson National Accelerator Facility
J.C. Bernauer - Massachusetts Institute of Technology
J. Bessuille - MIT Bates Research & Engineering Center, Middleton, MA 01949, USA
J. Boyce - Thomas Jefferson National Accelerator Facility
J. Coleman - Thomas Jefferson National Accelerator Facility
D. Douglas - Thomas Jefferson National Accelerator Facility
C.S. Epstein - Massachusetts Institute of Technology
P. Fisher - Massachusetts Institute of Technology
S. Frierson - Thomas Jefferson National Accelerator Facility
M. Garçon - University of Paris-Saclay
J. Grames - Thomas Jefferson National Accelerator Facility
D. Hasell - Massachusetts Institute of Technology
C. Hernandez-Garcia - Thomas Jefferson National Accelerator Facility
E. Ihloff - MIT Bates Research & Engineering Center, Middleton, MA 01949, USA
R. Johnston - Thomas Jefferson National Accelerator Facility
K. Jordan - Massachusetts Institute of Technology
R. Kazimi - Thomas Jefferson National Accelerator Facility
J. Kelsey - Thomas Jefferson National Accelerator Facility
M. Kohl - Thomas Jefferson National Accelerator Facility
A. Liyanage - Hampton University
M. McCaughan - Thomas Jefferson National Accelerator Facility
R.G. Milner - Massachusetts Institute of Technology
P. Moran - Massachusetts Institute of Technology
J. Nazeer - Thomas Jefferson National Accelerator Facility
D. Palumbo - Thomas Jefferson National Accelerator Facility
M. Poelker - Thomas Jefferson National Accelerator Facility
G. Randall - Thomas Jefferson National Accelerator Facility
S.G. Steadman - Massachusetts Institute of Technology
C. Tennant - Thomas Jefferson National Accelerator Facility
C. Tschalär - Thomas Jefferson National Accelerator Facility
C. Vidal - Thomas Jefferson National Accelerator Facility
C. Vogel - Thomas Jefferson National Accelerator Facility
Y. Wang - Thomas Jefferson National Accelerator Facility
S. Zhang - Massachusetts Institute of Technology
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Publication Details: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, Vol.939(C), pp.46-54
Publisher: Elsevier B.V
Identifiers: 9925497608331
Academic Unit: Prince Sattam Bin Abdulaziz University
Language: English
Resource Type: Journal article