Progress on the high-current 704 MHz superconducting RF cavity at BNL

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The 704 MHz high current superconducting cavity has been designed with consideration of both performance of fundamental mode and damping of higher order modes. A copper prototype cavity was fabricated by AES and delivered to BNL. RF measurements were carried out on this prototype cavity, including fundamental pass-band and HOM spectrum measurements, HOM studies using bead-pull setup, prototyping of antenna-type HOM couplers. The measurements show that the cavity has very good damping for the higher-order modes, which was one of the main goals for the high current cavity design. 3D cavity models were simulated with Omega3P code developed by SLAC ... continued below

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W., Xu; Astefanous, C.; Belomestnykh, S.; Ben-Zvi, I. & al, et May 20, 2012.

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The 704 MHz high current superconducting cavity has been designed with consideration of both performance of fundamental mode and damping of higher order modes. A copper prototype cavity was fabricated by AES and delivered to BNL. RF measurements were carried out on this prototype cavity, including fundamental pass-band and HOM spectrum measurements, HOM studies using bead-pull setup, prototyping of antenna-type HOM couplers. The measurements show that the cavity has very good damping for the higher-order modes, which was one of the main goals for the high current cavity design. 3D cavity models were simulated with Omega3P code developed by SLAC to compare with the measurements. The paper describes the cavity design, RF measurement setups and results for the copper prototype. The progress with the niobium cavity fabrication will also be described.

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  • 2012 International Particle Accelerator Conference (IPAC 2012); New Orleans, LA; 20120520 through 20120525

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  • Report No.: BNL--96823-2012-CP
  • Grant Number: DE-AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 1044762
  • Archival Resource Key: ark:/67531/metadc844750

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  • May 20, 2012

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  • May 19, 2016, 9:45 a.m.

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  • July 21, 2016, 7:04 p.m.

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W., Xu; Astefanous, C.; Belomestnykh, S.; Ben-Zvi, I. & al, et. Progress on the high-current 704 MHz superconducting RF cavity at BNL, article, May 20, 2012; United States. (digital.library.unt.edu/ark:/67531/metadc844750/: accessed November 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.