A liquid hydrogen target for the MUSE experiment at PSI

A 280ml liquid hydrogen target has been constructed and tested 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 constra...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2020-01, Vol.949 (C), p.162874, Article 162874
Main Authors: Roy, P., Corsetti, S., Dimond, M., Kim, M., Le Pottier, L., Lorenzon, W., Raymond, R., Reid, H., Steinberg, N., Wuerfel, N., Deiters, K., Briscoe, W.J., Golossanov, A., Rostomyan, T.
Format: Article
Language:English
Subjects:
Elastic scattering
Liquid hydrogen target
Muon beam
MUSE
NUCLEAR PHYSICS AND RADIATION PHYSICS
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Summary:A 280ml liquid hydrogen target has been constructed and tested 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 0.01K level. This suggests a density stability at the 0.02% level, which is about a factor of ten better than required.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2019.162874