Field mapping of the Hall A high-resolution spectrometers of the Thomas Jefferson National Accelerator Facility (Jefferson Lab)

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• 作者：Vernin ; P. ; Le Bars ; J. ; Fonvieille ; H. ; Qué ; mé ; ner ; G. ; LeRose ; J.J. ; Hogan ; J. ; et. al.
• 关键词：07.55.Ge ; 07.55.Yv ; 41.85.Lc ; 29.30.Aj ; Field mapping ; Superconducting magnets ; Dipole ; Quadrupoles ; Rotating coils ; Hall probes
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2000
• 出版时间：July 21, 2000
• 年：2000
• 卷：449
• 期：3
• 页码：505-527
• 全文大小：1.06 M

文摘

This paper reports on the magnetic field mapping performed on the HRS spectrometers of Hall A, which are of QQDQ type. The dipoles were measured with a set of Hall probes in the symmetry mid-plane. The quadrupoles were measured inside their whole volume by a set of axially segmented rotating coils. High accuracy has been reached in both cases. Dipoles and quadrupoles were measured for a set of excitation currents covering the operating momentum range of the HRS: 0.5–4GeV/c. The main results on field determination are presented.