Record Details

Title:
Breakdown Localization Studies on the SwissFEL C-band Test Structures
Affiliation(s):
EuXFEL staff
Author group:
Management Board
Topic:
Abstract:
The SwissFEL main LINAC will consist of 104 C-band structures with a nominal accelerating gradient of 28MV/m. First power tests were performed on short constant impedance test-structures composed of eleven double-rounded cups. In order to localize breakdowns, two or three acoustic emission sensors were installed on thetest-structures. In order to localize breakdowns we have analysed, in addition to acoustic measurements, the delay and phase of the RF power signals. Parasitic, acoustic noise emitted from the loads of the structure complicated the data interpretation and necessitated appropriate processing of the acoustic signals. The Goals of the experiments were to identify design and manufacturing errors of the structures. The results indicate that breakdowns occur mostly at the input power coupler, as also confirmed by vacuum-eventsat the same location. The experiments show that the LINAC test-structures fulfil the requirements in breakdownprobability. Moreover developing a detection system based on acoustic emission sensors for breakdown localization for our C-band structure seems reasonable given the results obtained.
Imprint:
2013
conference Information:
Proceedings of IPAC2013, WEPFI058 (2013)
ISBN:
978-3-95450-122-9
Report number:
WEPFI058
Language(s):
English
Conference information:
4th International Particle Accelerator Conference, IPAC2013, Shanghai, 2013-05-12 - 2013-10-17, China


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 Record created 2016-10-11, last modified 2019-01-30

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