Paper |
Title |
Other Keywords |
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MOPE26 |
Front End Photon Shutter Water Leak to Vacuum at the Canadian Light Source |
ion, photon, operation, vacuum |
60 |
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- G.R. Henneberg, M.J.P. Adam, G.R. Barkway
CLS, Saskatoon, Saskatchewan, Canada
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In early July 2016 CLS experienced a water to vacuum leak in the storage ring. The source of the leak was a pin hole in the absorbing surface of Photon Shutter 1 in the front end of the HXMA Beamline. The leak was caused by high velocity cooling water erosion of the internal cooling water path of the copper photon shutter block. The poster will present the root cause analysis of the leak, implications for other identical photon shutters and currently in service and the current remedial action plan.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE26
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About • |
paper received ※ 11 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017 |
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MOPE42 |
Experimental and Numerical Study of the ALBA LINAC Cooling System |
ion, linac, experiment, operation |
102 |
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- M. Ferrater
UPC, Barcelona, Spain
- J.J. Casas, C. Colldelram, D. Lanaia, R. Muñoz Horta, F. Pérez, M. Quispe
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
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This work investigates experimentally and numerically the performance of the ALBA LINAC cooling system. The main objective is to enhance the hydraulic system in order to significantly improve its thermal and water flow stability. In normal operation some problems have been identified that affect the performance of the LINAC: flowrate below the nominal values and water flow decreasing in time. The cooling subsystems have been experimentally characterized in terms of the pressure drop and flowrate. The measurements were taken using a portable hydraulic unit made at ALBA as well as a set of ultrasonic flowmeters. For the numerical studies the cooling network has been simulated using the software Pipe Flow Expert. The experimental results have shown that a number of components are too restrictive. In some cases the possibility to increase the flowrate is limited. The numerical results show that the velocity magnitude is inadequate in some places, producing air bubble entrapment, high pressure drop at pipes and insufficient flow. Based on this study several modifications are presented in order to raise the nominal flow and to adequate the water flow velocities between 0.5 and 3 m/s.
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Poster MOPE42 [1.073 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE42
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About • |
paper received ※ 09 September 2016 paper accepted ※ 15 September 2016 issue date ※ 22 June 2017 |
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WECA05 |
Superconducting RF System Plans at CLS |
ion, cryomodule, storage-ring, SRF |
293 |
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- C.N. Regier
CLS, Saskatoon, Saskatchewan, Canada
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Canadian Light Source (CLS) in Saskatoon, Canada has several cryogenic systems. One of the most critical is a 4.4 K liquid helium system for a superconducting RF cavity. This system consists of a Linde TCF-50 liquid helium plant coupled to a Cornell-designed CESR-B 500 MHz cavity and cryomodule via a 52 metre multi-channel transfer line. Over the years CLS has evaluated failures on the system as well as risks for downtime, and has come up with plans for a major upgrade to the superconducting RF system to improve reliability. An overview of performance and issues to date is presented. Some of the specifics of the risk analysis and upgrade plan will be examined, and details of the process flow discussed.
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Slides WECA05 [5.622 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-MEDSI2016-WECA05
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About • |
paper received ※ 11 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017 |
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