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A liquid hydrogen target for the MUSE experiment at PSI

Journal Article · · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
 [1];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [3];  [4];  [4];  [5]
  1. Univ. of Michigan, Ann Arbor, MI (United States). Randall Lab. of Physics; GWU
  2. Univ. of Michigan, Ann Arbor, MI (United States). Randall Lab. of Physics
  3. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  4. George Washington Univ., Washington, DC (United States)
  5. Rutgers Univ., Piscataway, NJ (United States)
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A 280 ml liquid hydrogen target has been constructed and tested here for the MUSE experiment at PSI to investigate the proton charge radius via simultaneous measurement of elastic muon–proton and elastic electron–proton scattering. To control systematic uncertainties at a sub-percent level, strong constraints were put on the amount of material surrounding the target and on its temperature stability. The target system was successfully operated during a commissioning run at PSI at the end of 2018. The target temperature was stable at the 0.01 K level. This indicates a density stability at the 0.02% level, which is about a factor of ten better than required.
Research Organization:
George Washington Univ., Washington, DC (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
SC0016583; SC0012485
OSTI ID:
1615517
Alternate ID(s):
OSTI ID: 1703463
OSTI ID: 1726272
Journal Information:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Journal Issue: C Vol. 949; ISSN 0168-9002
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (4)

The size of the proton journal July 2010
Fundamental Equations of State for Parahydrogen, Normal Hydrogen, and Orthohydrogen journal September 2009
CODATA recommended values of the fundamental physical constants: 2006 journal June 2008
Muonic Hydrogen and the Proton Radius Puzzle journal October 2013

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Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Elastic scattering
Liquid hydrogen target
MUSE
Muon beam