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S-band Traveling-Wave Deflecting Structures for the PAL-XFEL
- Source :
- Journal of the Korean Physical Society. 73:1099-1102
- Publication Year :
- 2018
- Publisher :
- Korean Physical Society, 2018.
-
Abstract
- We designed a 20-MV S-band traveling-wave deflecting structure to measure the bunch length of the electron beams for the PAL-XFEL. Since the start of commissioning of all RF systems of the PAL-XFEL on 12 April 2016, two out of three fabricated structures are currently being operated; one each in the hard X-ray and the soft X-ray branches. These deflecting structures were carefully tuned by using a 4-m-long nodal phase scanner in a precisely temperature and humidity controlled cleanroom considering the phase predictions calculated using RF field solvers. We carried out RF conditioning and beam commissioning with highly-stable high-power S-band RF systems and an EPICS-based control system. We briefly present our design of S-band deflecting structure and discuss the test results, including the results of the RF and the beam measurements.
- Subjects :
- 010302 applied physics
Physics
Scanner
business.industry
Phase (waves)
Free-electron laser
General Physics and Astronomy
02 engineering and technology
Electron
021001 nanoscience & nanotechnology
01 natural sciences
Optics
Cleanroom
Control system
0103 physical sciences
Physics::Accelerator Physics
S band
0210 nano-technology
business
Beam (structure)
Subjects
Details
- ISSN :
- 19768524 and 03744884
- Volume :
- 73
- Database :
- OpenAIRE
- Journal :
- Journal of the Korean Physical Society
- Accession number :
- edsair.doi...........a36690a2a01ec4900a5b8f9a30c9ecda