THE SHORT-PERIOD WIGGLER FOR CAEP FIR-FEL

Citation
Qx. Liu et al., THE SHORT-PERIOD WIGGLER FOR CAEP FIR-FEL, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 407(1-3), 1998, pp. 392-395
Citations number
8
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
ISSN journal
01689002
Volume
407
Issue
1-3
Year of publication
1998
Pages
392 - 395
Database
ISI
SICI code
0168-9002(1998)407:1-3<392:TSWFCF>2.0.ZU;2-K
Abstract
A 30-period short-period wiggler has been constructed for the FIR-FEL at CAEP. We present results on the design, construction and performanc e of this novel hybrid wiggler structure. The primary magnetic flux is provided by magnet blocks in the same way as the well-known Halbach h ybrid wiggler scheme. The additional magnetic flux is supplied by comb ined Pi-shaped magnet blocks. The wiggler with the 16 mm period and 5. 7 mm gap has generated an on-axis peak field of 0.75 T with the on-axi s rms magnetic field error of better than 0.05%. The beam deviation is not more than 1/8 of its amplitude. (C) 1998 Elsevier Science B.V. Al l rights reserved.