CEC-ICMC 2019 - Abstracts, Timetable and Presentations

C3Or1B-04: Design, Fabrication, Commissioning and Testing of FRIB 2 K Cold Compressor System

24 Jul 2019, 11:45

15m

Level 6, Room 24-25

Contributed Oral Presentation C3Or1B - Large Scale Refrigeration and Liquefaction - FRIB

Speaker

Dr Peter Knudsen (Facility for Rare Isotope Beams - Michigan State University)

Description

The FRIB cryogenic engineering group designed and built the sub-atmospheric cold box which supports the 2 K (31 mbar) operation of the FRIB accelerator cryo-modules. The centrifugal cryogenic (cold) compressors, designed with room temperature motors and active magnetic bearings, were supplied by Air Liquide to FRIB specifications and were integrated into the cold box which was built on site. The preliminary commissioning tests demonstrated that the system has achieved all the specification goals of operating from 110-180 g/s with a suction pressure of 0.028 mbar, discharge pressure of 1.15 bar and a discharge temperature less than 30 K. This paper will briefly review the sub-atmospheric 2 K system design features and discuss the recent commissioning results.

Presentation materials

C3Or1B-04 - Design Fabrication Commissioning and Testing of FRIB 2 K Cold Compressor System-Presentation_submit.pdf