Abstract
Turbulent cooling water in the Compact Linear Collider (CLIC) accelerating structures will inevitably induce some vibrations. The maximum acceptable amplitude of vibrations is small, as vibrations in the accelerating structure could lead to beam jitter and alignment difficulties. A Finite Element Analysis model is needed to identify the conditions under which turbulent instabilities and significant vibrations are induced. Due to the orders of magnitude difference between the fluid motion and the structure's motion, small vibrations of the structure will not contribute to the turbulence of the cooling fluid. Therefore the resonant conditions of the cooling channels presented in this paper, directly identify the natural frequencies of the accelerating structures to be avoided under normal operating conditions. In this paper a 2D model of the cooling channel is presented finding spots of turbulence being formed from a shear layer instability. This effect is observed through direct visualisation and wavelet analysis.
Original language | English |
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Title of host publication | IPAC 2011 - 2nd International Particle Accelerator Conference |
Subtitle of host publication | San Sebastian, Spain; 4-9 September 2011 |
Place of Publication | Geneva |
Publisher | Joint Accelerator Conferences Website (JACoW) |
Pages | 65-67 |
Number of pages | 3 |
ISBN (Print) | 9789290833666 |
Publication status | Published - 2011 |
Event | International Particle Accelerator Conference (IPAC 2011) - Kursaal, San Sebastian, Spain Duration: 4 Sept 2011 → 9 Sept 2011 Conference number: 2nd https://accelconf.web.cern.ch/ipac2011/ |
Conference
Conference | International Particle Accelerator Conference (IPAC 2011) |
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Abbreviated title | IPAC 2011 |
Country/Territory | Spain |
City | Kursaal, San Sebastian |
Period | 4/09/11 → 9/09/11 |
Internet address |