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WEPRB021 |
Commissioning of S-band Cavity Test Facility at Elettra for Conditioning of High Gradient Structures for the Fermi Linac Upgrade |
2846 |
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- N. Shafqat, L. Giannessi, C. Masciovecchio, M. Milloch, C. Serpico, M. Svandrlik, M. Trovò
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
- M. Bopp, R. Zennaro
PSI, Villigen PSI, Switzerland
- T.G. Lucas
The University of Melbourne, Melbourne, Victoria, Australia
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FERMI is the seeded Free Electron Laser (FEL) user facility at Elettra laboratory in Trieste, operating in the VUV to soft X-rays spectral range. In order to extend the FEL spectral range to shorter wavelengths, a feasibility study for increasing the Linac energy from 1.5 GeV to 1.8 GeV is actually going on. A short prototype of a new High Gradient (HG) S-band accelerating structure has been built in collaboration with Paul Scherrer Institute (PSI). The new structures are intended to replace the present Backward Travelling Wave (BTW) sections and tailored to be operated at a gradient of 30 MV/m. For RF conditioning and high power testing of prototype, a Cavity Test Facility (CTF) is commissioned at FERMI. The test facility is equipped with RF pulse compressor system and a dedicated diagnostic for breakdown rate (BDR) measurements and events localization. In this paper we present in detail cavity test facility of FERMI and high power testing of the first prototype.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2019-WEPRB021
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About • |
paper received ※ 08 April 2019 paper accepted ※ 20 May 2019 issue date ※ 21 June 2019 |
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WEPRB064 |
High Power Conditioning of X-Band Variable Power Splitter and Phase Shifter |
2964 |
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- V. del Pozo Romano, H. Bursali, N. Catalán Lasheras, A. Grudiev, S. Pitman, I. Syratchev
CERN, Geneva, Switzerland
- C. Serpico
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
- M. Volpi
The University of Melbourne, Melbourne, Victoria, Australia
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The three X-band test facilities currently at CERN aim at qualifying CLIC structures prototypes but are also exten- sively used to qualify X-band components operation at high power. In order to upgrade one of the facilities from a single test line to a double test line facility, a high power variable splitter and variable phase shifter have been designed and manufactured at CERN. They have been power tested, first in a dedicated test and also in their final configuration, to en- sure stable power operation before installing them together with an accelerating structure. In this paper, we broadly describe the RF and mechanical design, manufacturing and low power measurements agreement with simulations. We report the high power qualification of both components and their suitability to be used in existing and planned X-band facilities.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2019-WEPRB064
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About • |
paper received ※ 10 May 2019 paper accepted ※ 22 May 2019 issue date ※ 21 June 2019 |
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※ Text/Word,
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