CERN Accelerating science

Article
Title	Beam Injection for the PF-AR with a Single Pulsed Quadrupole Magnet
Author(s)	Harada, Kentaro ; Kobayashi, Yukinori ; Mitsuhashi, Toshiyuki ; Miyajima, Tsukasa ; Nagahashi, Shinya ; Obina, Takashi ; Ueda, Akira
Affiliation	(KEK, Ibaraki)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.1517
Subject category	Accelerators and Storage Rings
Abstract	We develop the injection system for PF-AR (Photon Factory Advanced Ring for Pulsed X-ray) with single pulse quadrupole (PQ) magnet without pulse local bump of the stored beam with four dipole kickers. The pulse quadrupole magnet has the length of 30cm, the field gradient of 3T/m, half-sine-form pulse width of 2.4mSec, measured inductance of 1.8mH and the peak current of about 2000A. With this magnet, the amplitude of the injected beam can be reduced to about the half of that only with septum magnets and the reduced amplitude is almost the same as the case of the usual injection with the pulse bump of the stored beam. We installed PQ-magnet at the short straight section near the south symmetric point of PF-AR in this summer of 2004 and succeeded to inject beam to the storage ring during the machine study in autumn, 2004.