SRF2011 - List of Authors (Grimm, C.J.)

Paper

Title

Page

650 MHz Cryomodules for Project X at Fermilab – Requirements and Concepts

34

T.J. Peterson, M.H. Foley, C.M. Ginsburg, C.J. Grimm, J.S. Kerby, Y. Orlov
Fermilab, Batavia, USA
R. Ghosh, G. Gilankar, A. Jain, P. Khare, P.K. Kush, A. Laxminarayanan
RRCAT, Indore (M.P.), India

Cryomodules containing 650 MHz superconducting niobium RF cavities and associated components (input couplers, tuners, instrumentation, etc.) will be developed for Project X, a proposed high intensity proton accelerator facility based on an H⁻ linear accelerator at Fermilab. This paper describes the requirements of the 650 MHz cryomodules and the implications of those requirements for the cryomodule design. Cryomodule string segmentation, integration with the cryogenic system, features for maintainability and access, piping and emergency venting considerations, pressure vessel issues, and thermal and mechanical design concepts will be described.

Poster MOPO003 [0.788 MB]

MOPO024

Design of Single Spoke Resonators for Project X

122

L. Ristori, S. Barbanotti, P. Berrutti, M.S. Champion, M.H. Foley, C.M. Ginsburg, I.G. Gonin, C.J. Grimm, T.N. Khabiboulline, D. Passarelli, N. Solyak, A. Vostrikov, V.P. Yakovlev
Fermilab, Batavia, USA

Funding: Operated by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy.
Project X is based on a 3 GeV CW superconducting linac and is currently in the R&D phase awaiting CD-0 approval. The low-energy section of the Project X H⁻ linac (starting at 2.5 MeV) includes three types of super-conducting single spoke cavities operating at 325 MHz. The first three cryomodules will each house 7 SSR0 cavities at β = 0.11. The following two cryomodules will each contain 10 SSR1 cavities each at β = 0.21. The last four cryomodules will contain 11 SSR2 cavities each at β = 0.4. Single spoke cavities were selected for the linac in virtue of their higher r/Q values compared to standard Half Wave Resonator. Quarter Wave Resonators were not considered for such a high frequency. In this paper we present the decisions and analyses that lead to the final design of SSR0. Electro-magnetic and mechanical finite element analyses were performed with the purpose of optimizing the electro-magnetic design, minimizing frequency shifts due to helium bath pressure fluctuations and providing a pressure rating for the resonators that allow their use in the cryomodules.

TUPO001

Development of Quality Assurance Procedures for the Fast/Slow Tuners on the 1.3 GHz SRF Cavities for the SRF Accelerator Test Facility at Fermilab

344

Y.M. Pischalnikov, S. Barbanotti, C.J. Grimm, T.N. Khabiboulline, R.V. Pilipenko, W. Schappert
Fermilab, Batavia, USA

The 1.3 GHz elliptical SRF cavities being prepared for cryomodules of the Fermilab SRF Accelerator Test Facility are equipped with coaxial blade tuners. Quality Assurance tests of these tuners during initial installation, cold testing in the Horizontal Test Stand and during string assembly are described.

Poster TUPO001 [1.811 MB]

Paper	Title	Page
MOPO003	650 MHz Cryomodules for Project X at Fermilab – Requirements and Concepts	34
	T.J. Peterson, M.H. Foley, C.M. Ginsburg, C.J. Grimm, J.S. Kerby, Y. Orlov Fermilab, Batavia, USA R. Ghosh, G. Gilankar, A. Jain, P. Khare, P.K. Kush, A. Laxminarayanan RRCAT, Indore (M.P.), India
	Cryomodules containing 650 MHz superconducting niobium RF cavities and associated components (input couplers, tuners, instrumentation, etc.) will be developed for Project X, a proposed high intensity proton accelerator facility based on an H⁻ linear accelerator at Fermilab. This paper describes the requirements of the 650 MHz cryomodules and the implications of those requirements for the cryomodule design. Cryomodule string segmentation, integration with the cryogenic system, features for maintainability and access, piping and emergency venting considerations, pressure vessel issues, and thermal and mechanical design concepts will be described.
	Poster MOPO003 [0.788 MB]

MOPO024	Design of Single Spoke Resonators for Project X	122
	L. Ristori, S. Barbanotti, P. Berrutti, M.S. Champion, M.H. Foley, C.M. Ginsburg, I.G. Gonin, C.J. Grimm, T.N. Khabiboulline, D. Passarelli, N. Solyak, A. Vostrikov, V.P. Yakovlev Fermilab, Batavia, USA
	Funding: Operated by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy. Project X is based on a 3 GeV CW superconducting linac and is currently in the R&D phase awaiting CD-0 approval. The low-energy section of the Project X H⁻ linac (starting at 2.5 MeV) includes three types of super-conducting single spoke cavities operating at 325 MHz. The first three cryomodules will each house 7 SSR0 cavities at β = 0.11. The following two cryomodules will each contain 10 SSR1 cavities each at β = 0.21. The last four cryomodules will contain 11 SSR2 cavities each at β = 0.4. Single spoke cavities were selected for the linac in virtue of their higher r/Q values compared to standard Half Wave Resonator. Quarter Wave Resonators were not considered for such a high frequency. In this paper we present the decisions and analyses that lead to the final design of SSR0. Electro-magnetic and mechanical finite element analyses were performed with the purpose of optimizing the electro-magnetic design, minimizing frequency shifts due to helium bath pressure fluctuations and providing a pressure rating for the resonators that allow their use in the cryomodules.

TUPO001	Development of Quality Assurance Procedures for the Fast/Slow Tuners on the 1.3 GHz SRF Cavities for the SRF Accelerator Test Facility at Fermilab	344
	Y.M. Pischalnikov, S. Barbanotti, C.J. Grimm, T.N. Khabiboulline, R.V. Pilipenko, W. Schappert Fermilab, Batavia, USA
	The 1.3 GHz elliptical SRF cavities being prepared for cryomodules of the Fermilab SRF Accelerator Test Facility are equipped with coaxial blade tuners. Quality Assurance tests of these tuners during initial installation, cold testing in the Horizontal Test Stand and during string assembly are described.
	Poster TUPO001 [1.811 MB]