RF, Thermal and Structural Analysis of the 201.25 MHz MuonIonization Cooling Cavity

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A finite element analysis has been carried out to characterize the RF, thermal and structural behavior of the prototype 201.25 MHz cavity for a muon ionization cooling channel. A single ANSYS model has been developed to perform all of the calculations in a multi-step process. The high-gradient closed-cell cavity is currently being fabricated for the MICE (international Muon Ionization Cooling Experiment) and MUCOOL experiments. The 1200 mm diameter cavity is constructed of 6 mm thick copper sheet and incorporates a rounded pillbox-like profile with an open beam iris terminated by 420 mm diameter, 0.38 mm thick curved beryllium foils. Tuning ... continued below

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Virostek, S. & Li, D. May 10, 2005.

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A finite element analysis has been carried out to characterize the RF, thermal and structural behavior of the prototype 201.25 MHz cavity for a muon ionization cooling channel. A single ANSYS model has been developed to perform all of the calculations in a multi-step process. The high-gradient closed-cell cavity is currently being fabricated for the MICE (international Muon Ionization Cooling Experiment) and MUCOOL experiments. The 1200 mm diameter cavity is constructed of 6 mm thick copper sheet and incorporates a rounded pillbox-like profile with an open beam iris terminated by 420 mm diameter, 0.38 mm thick curved beryllium foils. Tuning is accomplished through elastic deformation of the cavity, and cooling is provided by external water passages. Details of the analysis methodology will be presented including a description of the ANSYS macro that computes the heat loads from the RF solution and applies them directly to the thermal model. The process and results of a calculation to determine the resulting frequency shift due to thermal and structural distortion of the cavity will also be presented.

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  • 2005 Particle Accelerator Conference, Knoxville,TN, May 16 - 20, 2005

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  • Report No.: LBNL--57577
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 878702
  • Archival Resource Key: ark:/67531/metadc877692

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  • May 10, 2005

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  • Sept. 21, 2016, 2:29 a.m.

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  • Sept. 30, 2016, 2:12 p.m.

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Virostek, S. & Li, D. RF, Thermal and Structural Analysis of the 201.25 MHz MuonIonization Cooling Cavity, article, May 10, 2005; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc877692/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.