1. A high power liquid hydrogen target for parity violation experiments
- Author
-
E.J Beise, D.H Beck, E Candell, R Carr, F Duncan, T Forest, W Korsch, J.W Mark, R.D McKeown, B.A Mueller, M Pitt, and S Wells
- Subjects
Physics ,Nuclear and High Energy Physics ,Hydrogen ,010308 nuclear & particles physics ,Power deposition ,chemistry.chemical_element ,Parity (physics) ,01 natural sciences ,7. Clean energy ,Nuclear physics ,chemistry ,Deuterium ,Boiling ,0103 physical sciences ,Incident beam ,010306 general physics ,Instrumentation ,Electron scattering ,Liquid hydrogen - Abstract
Parity-violating electron scattering measurements on hydrogen and deuterium, such as those underway at the Bates and CEBAF laboratories, require luminosities exceeding $10^{38}$cm$^{-2}$s$^{-1}$, resulting in large beam power deposition into cryogenic liquid. Such targets must be able to absorb 500 watts or more with minimal change in target density. A 40~cm long liquid hydrogen target, designed to absorb 500~watts of beam power without boiling, has been developed for the SAMPLE experiment at Bates. In recent tests with 40~$\mu$A of incident beam, no evidence was seen for density fluctuations in the target, at a sensitivity level of better than 1\%. A summary of the target design and operational experience will be presented.
- Published
- 1996