June 28, 2015 to July 2, 2015
JW Marriott Starr Pass Resort
Etc/GMT-7 timezone

A new 2 K superconducting half-wave cavity cryomodule for PIP-II

Jun 29, 2015, 4:00 PM
Tucson Ballroom GH

Tucson Ballroom GH

Contributed Oral Presentation CEC-07 - Superconducting RF Systems C1OrG - Superconducting RF Systems I


Zachary Conway (Argonne National Laboratory)


Argonne National Laboratory has developed and is implementing a novel 2 K superconducting cavity cryomodule operating at 162.5 MHz and designed for the acceleration of H-/proton beams from 2.1 to 10 MeV as part of the Fermilab Proton Improvement Project-II (PIP-II). The cryomodule supports operation of up to 2 mA average beam current and bunch population of up to 3.8x108 ppb. This work is an evolution of techniques recently implemented in two previous heavy-ion accelerator cryomodules now operating at Argonne National Laboratory [1, 2]. The 2 K cryomodule is based upon low-velocity superconducting half-wave cavity technology comprised of 8 half-wave cavities operated in the continuous wave mode with 8 superconducting magnets located in front of each cavity. All of the solenoids and cavities operate off of a single gravity fed 2 K helium cryogenic system expected to provide up to 50 W of 2 K cooling. Here we review the mechanical design of the cavities and cryomodule which were developed using methods similar to those required in the ASME Boiler and Pressure Vessel Code, overview the cryomodule layout and select subsystem design, and provide a status report on the cryomodule fabrication. Some of the subsystems to be discussed include the support and precision alignment of the cavity-solenoid assembly to within +/-0.5 mm at 2 K, the 5 and 70 K cooling of thermal intercepts and heat exchangers, and the 5 to 2 K cryogenic liquefaction system.

Primary author

Zachary Conway (Argonne National Laboratory)


Mr Albert Barcikowski (Argonne National Laboratory) Mr Glenn Cherry (Argonne National Laboratory) Mr Mark Kedzie (Argonne National Laboratory) Dr Michael Kelly (Argonne National Laboratory) Dr Peter Ostroumov (Argonne National Laboratory) Mr Richard Fischer (Argonne National Laboratory) Dr Sang-hoon Kim (Argonne National Laboratory) Mr Scott Gerbick (Argonne National Laboratory) Mr Steven MacDonald (Argonne National Laboratory) Mr Thomas Nicol (Fermi National Accelerator Laboratory) Mr Thomas Reid (Argonne National Laboratory) Dr Valeri Lebedev (Fermi National Accelerator Laboratory)

Presentation materials