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Juranic P, Tiedtke K, Owada S, Tanaka T, Jastrow U, Sorokin A, Patthey L, Mankowsky R, Degenhardt M, Arbelo Y, Arrell C, Smedley J, Bohon J, Follath R. Transmission measurement at the Bernina branch of the Aramis Beamline of SwissFEL. JOURNAL OF SYNCHROTRON RADIATION 2019; 26:2081-2085. [PMID: 31721754 PMCID: PMC6853380 DOI: 10.1107/s1600577519013237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 09/26/2019] [Indexed: 05/22/2023]
Abstract
The transmission of the optical components of the Bernina branch of the Aramis beamline at SwissFEL has been measured with an X-ray gas monitor from DESY and compared with a PSI gas detector upstream of the optical components. The transmission efficiencies of the Mo, Si and SiC mirror coatings of the Aramis beamline and the various other in-beam components were evaluated and compared with theoretical calculations, showing an agreement of 6% or better in all cases. The experiment has also shown the efficacy of the high-harmonic rejection mirrors at the Bernina branch of the Aramis beamline at SwissFEL, and characterized the transmission efficiency of the on-line spectrometer in the Aramis beamline. The theoretical transmission of the mirror coatings match the experimental data to within 7%. The accuracy of these measurements was checked against a radiative bolometer from a Japanese collaboration and found to agree to a level of 4% or better. Further comparisons with a diamond detector from a US-based inter-institute collaboration demonstrated a good agreement for the attenuator settings of the beamline.
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Affiliation(s)
- Pavle Juranic
- Paul Scherrer Institut, Villigen 5232, Switzerland
- Correspondence e-mail:
| | - Kai Tiedtke
- DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Shigeki Owada
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Takahiro Tanaka
- National Institute of Advanced Industrial Science and Technology (AIST), NMIJ, Tsukuba 305-8568, Japan
| | - Ulf Jastrow
- DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | | | - Luc Patthey
- Paul Scherrer Institut, Villigen 5232, Switzerland
| | | | | | | | | | - John Smedley
- Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Jen Bohon
- Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Rolf Follath
- Paul Scherrer Institut, Villigen 5232, Switzerland
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