Magnetic Measurement of the Background Field in the Undulator Hall

Fisher, Andrew ; Nuhn, Heinz-Dieter ; Welch, James

SLAC National Accelerator Laboratory

关键词: Tuning;    Magnetic Fields;    43 Particle Accelerators;    36 Materials Science;    Construction;   

DOI  :  10.2172/992865
RP-ID  :  SLAC-TN-10-041
RP-ID  :  AC02-76SF00515
RP-ID  :  992865

美国|英语

来源: UNT Digital Library

【 摘 要 】

The steel present in the construction of the undulator hall facility has the potential for changing the ambient fields present in the undulator hall. This note describes a measurement done to make a comparison between the fields in the hall and in the Magnetic Measurement Facility. In order for the undulators to have the proper tuning, the background magnetic field in the Undulator Hall should agree with the background field in the Magnetic Measurements Facility within .5 gauss. In order to verify that this was the case measurements were taken along the length of the undulator hall, and the point measurements were compared to the mean field which was measured on the MMF test bench.