Thermal Tests of Undulator Quad

Fisher, Andrew ; /SLAC ; ,

SLAC National Accelerator Laboratory

关键词: Heating;    Magnetic Fields;    43 Particle Accelerators;    Quadrupoles;    Temperature Gradients;   

DOI  :  10.2172/992864
RP-ID  :  SLAC-TN-10-042
RP-ID  :  AC02-76SF00515
RP-ID  :  992864

美国|英语

来源: UNT Digital Library

【 摘 要 】

Running at the nominal temperature, the undulator quadrupole has a several degree temperature increase. This note describes the test used to determine the effect on the undulator integrals from the temperature gradient caused by the heat from the quadrupole conducting down the beam pipe. The undulator quadrupoles running at their nominal current of 4 amps heat up approximately 4 degrees Celsius; this magnet in turn heats up the beampipe which goes into the undulator. The heating ends up introducing a thermal gradient across the undulator which causes small changes in the magnetic field of the heated poles. By measuring the temperature change in the poles we can model the effects on the field and determine what the magnetic errors will be.