Speaker
Jui-Che Huang
(National Synchrotron Radiation Research Center)
Description
A PrFeB-based cryogenic permanent-magnet undulator (CPMU) of period length 15 mm has been constructed to provide hard X-rays of energy 10-40 keV at the Taiwan photon source (TPS). Two cryo-coolers with total cooling capacity nearly 300 watts and special designed components are dedicated for TPS-CU15 to ensure its stable magnetic and cryogenic performance. The CU15 can generate an effective magnetic field of 1.32 T at gap 4 mm when the temperature of magnet is 80 K. At beam current of 500 mA with bunch length of 16 ps, the measured beam-induced heat load is 112 W at a vacuum gap 4.8 mm. The broadband impedance, include geometrical impedance and resistive wall heating, was found to contribute the most in the beam heating mechanism.
| Region represented | Asia |
|---|
Primary author
Jui-Che Huang
(National Synchrotron Radiation Research Center)
Co-authors
Ching-Lung Chen
(National Synchrotron Radiation Research Center)
Hideo Kitamura
(The Institute of Physical and Chemical Research)
