| Paper |
Title |
Page |
| WEPC152 |
Magnet Block Optimization of the APPLE-II Elliptically Polarized Undulator
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2362 |
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- T. Wang, Q. K. Jia
USTC/NSRL, Hefei, Anhui
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The uniform field region of elliptically polarized undulator (EPU) of APPLE-II type is very short especially in the horizonta axis. The magnet block arrangements with a approximately parabolic pole face or of APPLE-II undulator can enlarge the horizontal field roll-off and shorten the vertical field roll-off. We studied the dfferent shapes to expect a optimizaed horizotal and vertical field roll-off.
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