Open AccessMedium-beta superconducting cavity tests at Los Alamos National Laboratory for high-current, proton accelerators
Author(s) -
W.B. Haynes,
B. Rusnak,
K.C.D. Chan,
F. Krawcyzk,
A.H. Shapiro,
R.A. Bibeau,
B. Gentzlinger,
D.I. Montoya,
H. Safa
Publication year - 1998
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/638211
Subject(s) - national laboratory , beta (programming language) , proton , current (fluid) , physics , superconductivity , nuclear physics , particle accelerator , superconducting super collider , superconducting magnet , magnetic field , nuclear engineering , engineering physics , optics , condensed matter physics , engineering , beam (structure) , thermodynamics , programming language , quantum mechanics , computer science
Single-cell superconducting cavities are currently being evaluated for use in high-current proton accelerator applications being developed at Los Alamos National Laboratory (LANL). The designs that have been evaluated so far include 0.48 and 0.64 beta cavities. The parameters that have been checked are: peak surface electric field, magnetic quench field, multipacting levels, cavity Q, and propensity for Q disease. In limited tests to date, peak surface fields of 43 MV/m, and quench fields up to 103 mT have been achieved. Q{sub 0} values have been typically 1 {times} 10{sup 10} at 2 K, with a reduction of about 30% after being held at 150 K for two hours. While some conditioning barriers were eliminated, no obvious multipactor zones were found
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