Conveners
C2PoH - Large Scale Refrigeration and Liquefaction II
- Lars Blum (Linde Kryotechnik AG)
- John Weisend (European Spallation Source ERIC)
This article mainly introduces the treatment of the internal leakage of the helium liquefier. The Linde L70 helium liquefier I run was found to be difficult to maintain the vacuum, the system is difficult to carry out. Gradual investigation of the problem, that is cold box internal pipeline leakage. Then I and my colleagues in the Linde company's proposal to develop a maintenance plan, the...
In this paper, a 500W@4.5K helium refrigerator for ADS (Accelerator Driven Subcritical) project of CAS (Chinese Academy of Sciences) has been designed and constructed. The function requirements and process analysis of this helium refrigerator are described. Based on the floating pressure cycle, the balanced design between the refrigerator and its liquefier for an equal Carnot work with the...
A new 4.5K cold box at Jefferson Lab (JLab) Cryogenic Test Facility (CTF) was recently installed and commissioned to upgrade the existing 4.5 K refrigeration system and work in parallel with the existing 4.5 K cold box. This new 4.5 K cold box is equipped with two turbo-expanders and, at its maximum capacity condition, can support up to 6.6 g/s of helium liquefaction or 650 W of refrigeration...
The Facility for Rare Isotope Beams (FRIB) will be a scientific user facility for the Office of Nuclear Physics in the U.S. Department of Energy Office of Science (DOE-SC). The FRIB LINAC will be comprised of cryomodules each with multiple Superconducting Radio Frequency (SRF) cavities operating at 2 K. A helium refrigeration system was designed, fabricated, installed and commissioned in the...
The Shanghai Synchrotron Radiation Facility (SSRF) is an intermediate energy light source built at Zhang-Jiang Hi-Tech Park in Shanghai, China. The SSRF consists of a 432 m circumference storage ring with operating energy of 3.5 GeV and minimum emittance of 2.9 nm-rad, a full energy booster, a 150 MeV electron Linac. The RF power and voltage required for storing the electron beam are provided...