Author :
Soutome, K. ; Daté, S. ; Ego, H. ; Fukui, T. ; Hara, M. ; Hosoda, N. ; Kawashima, Y. ; Kodera, M. ; Kumagai, Naoki ; Magome, T. ; Masaki, M. ; Masuda, T. ; Matsui, S. ; Nakamura, T. ; Noda, T. ; Ohashi, Y. ; Ohshima, T. ; Oishi, M. ; Saeki, H. ; Sasaki, S
Abstract :
A three-pole 10-T superconducting wiggler was installed in the 8-GeV electron storage ring at SPring-8 for generating high-energy synchrotron radiation. Beam tests were carried out to check its performance and to investigate the effects on a stored beam. A beam was successfully stored at magnetic fields of the wiggler up to 9.7 T. The beam current was limited to 1 mA to avoid unnecessarily high heat-load on photon absorbers and radiation damage to accelerator components. Beam parameters such as a horizontal beam size, a bunch length, betatron tune shifts were measured. A spectrum of high-energy synchrotron radiation from the wiggler was also measured with the NaI scintillator at an extremely low beam current of about 8 pA.
Keywords :
accelerator magnets; electron accelerators; particle beam bunching; particle beam diagnostics; storage rings; superconducting magnets; synchrotron radiation; synchrotrons; wigglers; 1 mA; 10 T; 10-T superconducting wiggler; 8 GeV; 8-GeV electron storage ring; SPring-8 storage ring; beam current; betatron tune shifts; bunch length; high-energy synchrotron radiation; horizontal beam size; stored beam; Accelerator magnets; Electrons; Length measurement; Magnetic field measurement; Particle beams; Size measurement; Storage rings; Synchrotron radiation; Testing; Undulators;
