PAC2013 - List of Authors (Passarelli, D.)

Paper	Title	Page
WEPAC21	Tuning Process of SSR1 Cavity for Project X at FNAL	832
	P. Berrutti, M.H. Awida, T.N. Khabiboulline, D. Passarelli, L. Ristori, V.P. Yakovlev Fermilab, Batavia, USA
	SSR1 is a family of single spoke resonators to be used in Project X at Fermi National Laboratory. These cavities operate in CW regime having nominal frequency of 325 MHz and optimal beta of 0.22. SSR1 cavities will accelerate H⁻ ions after the Half Wave Resonator (HWR) section from 9 MeV to 32 MeV. In the near future this cavity will be used in Project X Injector Experiment (PXIE), which contains the ion source, the LEBT, the MEBT, the RFQ of Project X, and a cryogenic temperature section, having one HWR and one SSR1 cryomodule. SSR1 cavities have been built and tested at FNAL, the preparation of these resonators includes RF tuning which is the main focus of this paper. The frequency of the cavity is carefully chosen prior to the vertical test, and it is adjusted before welding the helium vessel to obtain 325 MHz nominal frequency for the dressed cavity in operating conditions. Several SSR1 cavities have been tuned at FNAL, the procedure, the hardware and the data are presented.

THPMA09	SSR1 Cryomodule Design for PXIE	1373
	T.H. Nicol, S. Cheban, M. Chen, M. Merio, Y.O. Orlov, D. Passarelli, T.J. Peterson, V. Poloubotko, O.V. Pronitchev, L. Ristori, I. Terechkine Fermilab, Batavia, USA P. Bhattacharyya VECC, Kolkata, India
	Funding: Supported by FRA under DOE Contract DE-AC02-07CH11359 Project X is a proposed proton accelerator complex intended to support Fermilab’s role in intensity frontier research over the next several decades. It will replace the existing 40-year old Fermilab injector complex and add powerful new capabilities to support a large number of experiments in the energy range from 1 to 120 GeV. Fermilab is planning a program of research and development aimed at testing of critical components. This program, known as the Project X Injector Experiment (PXIE), is being undertaken as a major element of the ongoing Project X R&D program. PXIE contains two superconducting cavity cryomodules, one utilizing half-wave resonators (HWR), and the other, single spoke resonators (SSR). The first SSR cryomodule, known as SSR1 contains eight cavities and four solenoids in the following order: C–SC–CS–CC–SC–CS–C, as well as focusing and steering magnet elements. This paper describes the design of the SSR1 cryomodule and includes discussions of the system interfaces, vacuum vessel, magnetic and thermal shields, insulating and support systems, cavities, tuners, input couplers, focusing elements, and current leads.

Paper

Title

Page

Tuning Process of SSR1 Cavity for Project X at FNAL

832

P. Berrutti, M.H. Awida, T.N. Khabiboulline, D. Passarelli, L. Ristori, V.P. Yakovlev
Fermilab, Batavia, USA

SSR1 is a family of single spoke resonators to be used in Project X at Fermi National Laboratory. These cavities operate in CW regime having nominal frequency of 325 MHz and optimal beta of 0.22. SSR1 cavities will accelerate H⁻ ions after the Half Wave Resonator (HWR) section from 9 MeV to 32 MeV. In the near future this cavity will be used in Project X Injector Experiment (PXIE), which contains the ion source, the LEBT, the MEBT, the RFQ of Project X, and a cryogenic temperature section, having one HWR and one SSR1 cryomodule. SSR1 cavities have been built and tested at FNAL, the preparation of these resonators includes RF tuning which is the main focus of this paper. The frequency of the cavity is carefully chosen prior to the vertical test, and it is adjusted before welding the helium vessel to obtain 325 MHz nominal frequency for the dressed cavity in operating conditions. Several SSR1 cavities have been tuned at FNAL, the procedure, the hardware and the data are presented.

THPMA09

SSR1 Cryomodule Design for PXIE

1373

T.H. Nicol, S. Cheban, M. Chen, M. Merio, Y.O. Orlov, D. Passarelli, T.J. Peterson, V. Poloubotko, O.V. Pronitchev, L. Ristori, I. Terechkine
Fermilab, Batavia, USA
P. Bhattacharyya
VECC, Kolkata, India

Funding: Supported by FRA under DOE Contract DE-AC02-07CH11359
Project X is a proposed proton accelerator complex intended to support Fermilab’s role in intensity frontier research over the next several decades. It will replace the existing 40-year old Fermilab injector complex and add powerful new capabilities to support a large number of experiments in the energy range from 1 to 120 GeV. Fermilab is planning a program of research and development aimed at testing of critical components. This program, known as the Project X Injector Experiment (PXIE), is being undertaken as a major element of the ongoing Project X R&D program. PXIE contains two superconducting cavity cryomodules, one utilizing half-wave resonators (HWR), and the other, single spoke resonators (SSR). The first SSR cryomodule, known as SSR1 contains eight cavities and four solenoids in the following order: C–SC–CS–CC–SC–CS–C, as well as focusing and steering magnet elements. This paper describes the design of the SSR1 cryomodule and includes discussions of the system interfaces, vacuum vessel, magnetic and thermal shields, insulating and support systems, cavities, tuners, input couplers, focusing elements, and current leads.