Conveners
Thu-Po-3.5: Cryocoolers 2
- Delio Ramos (CERN)
A helium isotope separation system has been established which consisted of a 2K cryostat and a cryogenic separation device with an entropy filter. The 2K cryostat could reach 1.5K, providing a low-temperature environment for the separation device especially the entropy filter. The entropy filter, the core component of the cryogenic separation device, was made of Al2O3 powder which could...
A conduction cooling test facility to perform the characterization of superconducting model coils has been designed based on the use of a Gifford-McMahon cryocooler with a maximum of 1.8 Watt cooling capacity at 4.2 K. This facility will allow to test prototype coils as well as determine thermal properties of their components at a wide range of controllable temperatures. Such functionality is...
ABSOLUT SYSTEM has developed an industrial CRYOCOOLER, for superconducting applications.
Our cryocooler is based on Reverse Turbo-Brayton technology (RTB), allowing to deliver cold powers from 20K to 80K. It is composed with turbomachinery also designed and developed by Absolut System: compressors and turbine.
In addition, Absolut System specify and incorporate the necessarily exchangers,...
Superconducting radio frequency (SRF) cavities are, along with superconducting magnets, indispensable technologies for modern particle
accelerators. The current cooling method for SRF cavities is immersion in liquid helium, which is ideal in terms of cooling because the entire outer surface of the cavity is maintained at liquid helium temperature.
On the other hand, while superconducting...
High Energy Photon Source (HEPS) is a high-performance and high-energy synchrotron radiation light source with a beam energy of 6GeV and an ultra-low emittance of better than 0.06nm×rad. The HEPS is mainly composed of accelerator, beamlines and end-stations. No less than 90 high performance beamlines and end-stations are capable to be built around the storage ring. The HEPS is scheduled to be...
In the framework of the ISOLDE Superconducting Recoil Separator (ISRS) project, a short and straight CCT magnet demonstrator (MAGDEM) has been designed, comprising a dipole and a quadrupole. The final ISRS spectrometer is intended to consist of 12 units of this CCT magnet arranged in a ring configuration. Additionally, this type of magnet could potentially be used for proton therapy gantry...
This poster discusses the development of a new single-stage 20K Gifford-McMahon (GM) cryocooler by Sumitomo Heavy Industries, Ltd. The new cryocooler will have been released in this April. Its main features and the potential applications will be highlighted.
The new cryocooler is an upgraded version of the existing RDK-500B model, with no changes to its interface. It can be used for...
A two-stage Stirling cryocooler for cooling at temperatures of 100 K and 50 K is designed and its performance is experimentally validated. In the development process of the Stirling cryocooler, we firstly designed and evaluated the performance of a single-stage Stirling cryocooler operating at 100 K to calibrate the numerical model. The results revealed that the cooling performance of the...
Abstract:
With the development of quantum computing and other scientific fields, dilution refrigerator, as a major ultra-low temperature refrigeration equipment, is required to greater cooling capacity. The silver powder sintered heat exchanger is an essential component of the dilution refrigerator, as it determines its minimum temperature. This study examines the sintering of silver nano...
Superconducting accelerators currently rely on central refrigeration systems and complex piping system for distributing liquid helium and nitrogen. The proposed stand-alone cryomodule can be an attractive solution for both scientific and industrial applications. It offers the the simpler applicability in facilities lacking cryogenic equipment and expertise, and is particularly useful in...
Stirling coolers are a highly promising technology in the field of low temperature production due to their exceptional efficiency and reliability. Stirling coolers, one which employs helium as the working fluid, offer an alternate choice for those looking for a cooling system that offers both ecological friendly and energy-efficient. Stirling cooler, appropriate for producing temperature...
In order to study nuclear structure at the limits of stability through a program of targeted measurements at the Facility for Rare Isotope Beams (FRIB), a thick liquid-hydrogen target and vertex tracking detector system specifically optimized to be coupled to the Gamma-Ray Energy Tracking Array (GRETA) for fast beam measurements at FRIB is under development. The LH2 target-cell and windows...
A liquid helium re-liquefier system has been designed for superconducting chip test. The cold source of the system is a PT420 GM type Pulse tube cryocooler. On this base, the precooling structure and recondensation structure has been designed. Besides, composite magnetic shielding structure was used to ensure the chip working in an extremely low magnetic environment. With a special designed...
