TY - JOUR
T1 - Development of the edge-focusing wiggler for SASE
AU - Kashiwagi, Shigeru
AU - Mihara, Akihito
AU - Kato, Ryukou
AU - Isoyama, Goro
AU - Yamamoto, Shigeru
AU - Tsuchiya, Kimichika
N1 - Funding Information:
The authors would like to thank Mrs. T. Koda and K. Okihira of Sumitomo Special Metals Co. Ltd. for their help in magnetic field measurement of the EF wiggler. This research was partially supported by the Joint Development Research at High Energy Accelorator Research Organization (KEK), 2003-17, 2003, and the Ministry of Education, Science, Sports and Culture, Grant- in- Aid for Exploratory Research, 15654036, 2003.
PY - 2004/8/1
Y1 - 2004/8/1
N2 - We propose a novel concept to make a low-error wiggler to be used for self-amplified spontaneous emission. Magnetization errors of permanent magnet blocks can be reduced by using a pair or quartet of magnet pieces quarried out of a single raw block of permanent magnet. The concept has been tested experimentally using magnet blocks for a trial model of the edge-focus wiggler, which can produce a focusing field as high as 1T/m in the wiggler. The errors in the magnetization of magnet blocks were considerably reduced. This was calculated with the vertical magnetization axis with which it is easier to measure three components of the magnetic field, and the measured values are reliable. It has been experimentally confirmed that the concept works well.
AB - We propose a novel concept to make a low-error wiggler to be used for self-amplified spontaneous emission. Magnetization errors of permanent magnet blocks can be reduced by using a pair or quartet of magnet pieces quarried out of a single raw block of permanent magnet. The concept has been tested experimentally using magnet blocks for a trial model of the edge-focus wiggler, which can produce a focusing field as high as 1T/m in the wiggler. The errors in the magnetization of magnet blocks were considerably reduced. This was calculated with the vertical magnetization axis with which it is easier to measure three components of the magnetic field, and the measured values are reliable. It has been experimentally confirmed that the concept works well.
KW - Edge-focusing
KW - FEL(s)
KW - SASE
KW - Wiggler
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U2 - 10.1016/j.nima.2004.04.047
DO - 10.1016/j.nima.2004.04.047
M3 - Conference article
AN - SCOPUS:3242730342
SN - 0168-9002
VL - 528
SP - 203
EP - 207
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 1-2
T2 - Proceedings of the 25th International Free Electron Laser
Y2 - 8 September 2003 through 12 September 2003
ER -