Author: Ristori, L.
Paper Title Page
MOPP057
 Effects of High Temperature Treatments on Conflat© Flanges of Various Grades of Stainless Steel  
 
  • L. Ristori
    Fermilab, Batavia, Illinois, USA
  
  Funding: Work supported by D.O.E. Contract No. DE-AC02-07CH11359
Particle accelerators employ a variety of beam line components to accelerate, focus and manipulate beams. Such components are joined at the interfaces by utilizing flanges capable of establishing ultra-high vacuum seals. Certain processes in the manufacturing stages and in the surface preparation stages such as furnace brazing or hydrogen degassing produce high temperatures that can compromise the performance of the flanges by modifying the properties of the flange bulk and surface material. Commercial specifications for these flanges discourage heating above 450'C and pose restrictions on the manufacturing and treatment operations on beam line components. In this paper we present a systematic study performed on commercially available Conflat flanges made of different grades of stainless steel material. The study examined different heat treatments and repeated assemblies while observing variations in geometry, physical properties and sealing effectiveness. 		 
 
THPP050 Status of 325 MHz Main Couplers for PXIE 963
 
  • S. Kazakov, B.M. Hanna, T.N. Khabiboulline, V. Poloubotko, O.V. Pronitchev, L. Ristori, V.P. Yakovlev
    Fermilab, Batavia, Illinois, USA
  
  The Project X Injector Experiment (PXIE) at Fermilab will include one cryomodule with eight 325 MHz single spoke superconductive cavities (SSR1). Each cavity requires approximately 2 kW CW RF power for 1 mA beam current operation. A future upgrade will require up to 8 kW RF power per cavity. Fermilab has designed, procured and tested two prototype couplers for the SSR type cavities. Status of the 325 MHz main coupler development for PXIE is reported.  
 
THPP057 Results of Cold Tests of the Fermilab SSR1 Cavities 979
 
  • A.I. Sukhanov, M.H. Awida, P. Berrutti, E. Cullerton, B.M. Hanna, A. Hocker, T.N. Khabiboulline, O.S. Melnychuk, D. Passarelli, R.V. Pilipenko, Y.M. Pischalnikov, L. Ristori, A.M. Rowe, W. Schappert, D.A. Sergatskov
    Fermilab, Batavia, Illinois, USA
  
  Fermilab is currently building the Project X Injector experiment (PXIE). The PXIE linac will accelerate a 1 mA H− beam up to 30 MeV and serve as a testbed for validation of Project X concepts and mitigation of technical risks. A cryomodule of eight superconducting RF Single Spoke Resonators of type 1 (SSR1) cavities operating at 325 MHz is an integral part of PXIE. Ten SSR1 cavities were manufactured in industry and delivered to Fermilab. We discuss tests of nine bare SSR1 cavities at the Fermilab Vertical Test Stand (VTS). Recently, one of the SSR1 cavities was welded inside a helium jacket. Results of the test of this cavity in the Fermilab Spoke Test Cryostat (STC) are shown. We report on the measured performance parameters of SSR1 cavities achieved during the tests.