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| Title | Mechanical Design of a Diamond Crystal Hard X-Ray Self-Seeding Monochromator for PAL-XFEL | |
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| Abstract | As a part of the Argonne Strategic Partnership Project (SPP) 85H21, a collaboration between Advanced Photon Source (APS), Argonne National Laboratory (ANL) and Pohang Accelerator Laboratory (PAL), we have designed, constructed, and tested a thin-film-diamond monochromator for the PAL X-ray Free-Electron-Laser (PAL-XFEL) hard x-ray self-seeding project*. The mechanical design of the PAL-XFEL diamond crystal hard x-ray self-seeding monochromator is based on the APS design of a diamond-crystal monochromator for the LCLS hard x-ray self-seeding project** with enhanced diamond crystal holder for two thin-film-diamond crystals with thicknesses of 30 microns and 100 microns***. The customized high quality thin-film-diamonds and special graphite holder were provided by the Technological Institute for Super-hard and Novel Carbon Materials of Russia (TISNCM)****, and tested at the APS***. An in-vacuum multi-axis precision positioning mechanism is designed to manipulate the duo-thin-film diamonds holder with resolutions and stabilities required by the hard x-ray self-seeding physics. Mechanical specifications, designs, and preliminary test results of the diamond monochromator are presented in this paper. | |
| Footnotes & References | *Chang-Ki Min, et al, sub. J. Sync. Rad., 2018 **D. Shu, et al, J. Phys.: Conf. Ser. 425 (2013) 052004 ***Y. Shvyd’ko, et al, FEL2017, Santa Fe ****Polyakov S, et. al, 2011 Diam. Rel. Mat. 20 726 |
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| Funding | Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357 | |
| Paper | download THPGW089.PDF [1.494 MB / 4 pages] | |
| Export | download ※ BibTeX ※ LaTeX ※ Text/Word ※ RIS ※ EndNote | |
| Conference | IPAC2019 | |
| Series | International Particle Accelerator Conference (10th) | |
| Location | Melbourne, Australia | |
| Date | 19-24 May 2019 | |
| Publisher | JACoW Publishing, Geneva, Switzerland | |
| Editorial Board | Mark Boland (UoM, Saskatoon, SK, Canada); Hitoshi Tanaka (KEK, Tsukuba, Japan); David Button (ANSTO, Kirrawee, NSW, Australia); Rohan Dowd (ANSTO, Kirrawee, NSW, Australia); Volker RW Schaa (GSI, Darmstadt, Germany); Eugene Tan (ANSTO, Kirrawee, NSW, Australia) | |
| Online ISBN | 978-3-95450-208-0 | |
| Received | 14 May 2019 | |
| Accepted | 21 May 2019 | |
| Issue Date | 21 June 2019 | |
| DOI | doi:10.18429/JACoW-IPAC2019-THPGW089 | |
| Pages | 3782-3785 | |
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