IPAC2013 - List of Authors (Yang, C.S.)

Paper	Title	Page
MOPWA042	The Leakage Current Induced by Stray Capacitance in the Pulse Magnet System	762
	C.S. Chen, C.K. Chan, K.H. Hsu, Y.-H. Liu, C.S. Yang NSRRC, Hsinchu, Taiwan
	A huge amount of current must be provided during the nominal operation of the pulse magnet system in TPS (Taiwan Photon Source). It comes with all kinds of electromagnetic noises, including radiated and conducted EMI (electromagnetic interferences). The primary object of this article is to clarify the paths of induced EMI, especially by means of capacitance induction. Furthermore, some geometrical suggestions which had been tested are listed in this paper as the guidelines of the pulse magnet design. According to the measurement, proper distance and surface area lead to sufficient insulation and reduce the leakage current under the expected value.

MOPWA043	The HV Withstands Test for In Vacuum Booster Kicker	765
	Y.-H. Liu, C.K. Chan, C.S. Chen, H.H. Chen, J.-R. Chen, K.H. Hsu, H.P. Hsueh, Y.T. Huang, C.S. Yang NSRRC, Hsinchu, Taiwan
	The maximum driving voltage of TPS booster extraction kicker is close to 30 kV, the HV insulation should be carefully noticed. A DC withstand voltage tester MUSASHI 3802 (Model: IP-701G) is used to test the DC breakdown voltage, which the maximum driving voltage is 37 kV. The 10 mm gap between coil and ferrite is designed in order to increase HV break down voltage. The safety breakdown distance between HV coil and grounding plate was tested in air. Different insulation material with different thickness was tested the breakdown voltage. Thicker than 10 mm ceramic plate could effectively avoid the breakdown occurred with 37 kV DC charging. Thus HV withstand voltage will be higher in vacuum chamber and the insulation with HV will not be the problem.

THPME037	Magnetic Field Character of TPS Booster Magnets	3594
	J.C. Jan, C.-H. Chang, H.-H. Chen, Y.L. Chu, M.-H. Huang, C.-S. Hwang, C.Y. Kuo, F.-Y. Lin, C.S. Yang, Y.T. Yu NSRRC, Hsinchu, Taiwan
	The Taiwan Photon Source (TPS) is a 3-GeV synchrotron radiation facility operated in top-up injection mode. The booster ring of TPS shares the same tunnel, concentric with the storage ring. The lattice of the booster is a 24-cell DBA of circumference 496.8 m. The energy of the electron beam is ramped from 150 MeV to 3 GeV at repetition rate 3 Hz in the booster ring. The trajectory of the electron beam is controlled with complicated combined-function magnets including combined dipole magnet, combined quadrupole magnet, pure quadrupole magnet, sextupole magnet and corrector magnet. The measurement and performance of these magnets are discussed in this letter.

Paper

Title

Page

The Leakage Current Induced by Stray Capacitance in the Pulse Magnet System

762

C.S. Chen, C.K. Chan, K.H. Hsu, Y.-H. Liu, C.S. Yang
NSRRC, Hsinchu, Taiwan

A huge amount of current must be provided during the nominal operation of the pulse magnet system in TPS (Taiwan Photon Source). It comes with all kinds of electromagnetic noises, including radiated and conducted EMI (electromagnetic interferences). The primary object of this article is to clarify the paths of induced EMI, especially by means of capacitance induction. Furthermore, some geometrical suggestions which had been tested are listed in this paper as the guidelines of the pulse magnet design. According to the measurement, proper distance and surface area lead to sufficient insulation and reduce the leakage current under the expected value.

MOPWA043

The HV Withstands Test for In Vacuum Booster Kicker

765

Y.-H. Liu, C.K. Chan, C.S. Chen, H.H. Chen, J.-R. Chen, K.H. Hsu, H.P. Hsueh, Y.T. Huang, C.S. Yang
NSRRC, Hsinchu, Taiwan

The maximum driving voltage of TPS booster extraction kicker is close to 30 kV, the HV insulation should be carefully noticed. A DC withstand voltage tester MUSASHI 3802 (Model: IP-701G) is used to test the DC breakdown voltage, which the maximum driving voltage is 37 kV. The 10 mm gap between coil and ferrite is designed in order to increase HV break down voltage. The safety breakdown distance between HV coil and grounding plate was tested in air. Different insulation material with different thickness was tested the breakdown voltage. Thicker than 10 mm ceramic plate could effectively avoid the breakdown occurred with 37 kV DC charging. Thus HV withstand voltage will be higher in vacuum chamber and the insulation with HV will not be the problem.

THPME037

Magnetic Field Character of TPS Booster Magnets

3594

J.C. Jan, C.-H. Chang, H.-H. Chen, Y.L. Chu, M.-H. Huang, C.-S. Hwang, C.Y. Kuo, F.-Y. Lin, C.S. Yang, Y.T. Yu
NSRRC, Hsinchu, Taiwan

The Taiwan Photon Source (TPS) is a 3-GeV synchrotron radiation facility operated in top-up injection mode. The booster ring of TPS shares the same tunnel, concentric with the storage ring. The lattice of the booster is a 24-cell DBA of circumference 496.8 m. The energy of the electron beam is ramped from 150 MeV to 3 GeV at repetition rate 3 Hz in the booster ring. The trajectory of the electron beam is controlled with complicated combined-function magnets including combined dipole magnet, combined quadrupole magnet, pure quadrupole magnet, sextupole magnet and corrector magnet. The measurement and performance of these magnets are discussed in this letter.