Conveners
Thu-Mo-Posters Session 3.2: Cryostats
- Maciej Chorowski
Mr
Richard Down
(ISIS STFC)
10/07/2014, 10:30
C-05: Cryostat technology
Poster presentation (105min)
Most ultra-low temperature (below 1K) sample environment experiments at advanced neutron facilities are based on dilution and 3He refrigerator inserts used with Orange cryostats, or similar systems. However recent liquid helium cost increases, caused by global helium supply problems, have raised significant concern about the affordability of such cryostats. Here we present design and test...
Mr
Jia Guo
(Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, CAS)
10/07/2014, 10:30
C-05: Cryostat technology
Poster presentation (105min)
Cryogenic treatment is a supplementary process of traditional heat treatment which has been acknowledged for many decades as an effective method for increasing wear life, dimensional stability and mechanical properties such as yield strength, hardness et al.
A customized cryogenic treatment system for treating large rolls has been designed, built and tested. Liquid nitrogen has been employed...
Dr
Lei Wang
(Xián Jiaotong University),
Yanzhong LI
(Xi'an Jiaotong University)
10/07/2014, 10:30
C-05: Cryostat technology
Poster presentation (105min)
In this paper, a numerical study is performed on the filling process of a specified cryogenic tank from room temperature down to the low temperature. The cool-down behavior of the tank and the flow characteristics inside are analyzed considering the effects of the state (gas and liquid) of the filling substance and the filling rate. CFD simulations are carried out on saturated hydrogen gas...
Mr
Liubiao Chen
(Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences)
10/07/2014, 10:30
C-05: Cryostat technology
Poster presentation (105min)
The few products of optical cryostat for use in Microscopy and Spectroscopy in the market are generally cooled by liquid nitrogen, liquid helium or cryocoolers such as G-M cryocooler or G-M type pulse tube cryocooler (PTC), as sometimes it is not convenient to use G-M cryocooler or G-M type PTC because of its noise and big size; and in some places, liquid nitrogen, especially liquid helium, is...
Fridolin Holdener
(WEKA AG)
10/07/2014, 10:30
C-05: Cryostat technology
Poster presentation (105min)
To prevent backflow of boil-off gas into a cryostat or any other cryogenic system, a check valve with a low cracking pressure may be installed. This check valve should be placed in the boil-off gas line at ambient temperature. Design considerations and applications of such low-cracking- pressure check valves will be described and presented.
Anup Choudhury
(IUAC, India)
10/07/2014, 10:30
C-05: Cryostat technology
Poster presentation (105min)
A superconducting quadrupole doublet magnet cryostat with cold super ferric iron cover for Hybrid Recoil Mass Analyzer (HYRA) beam line has been commissioned. The total cold mass at 4.2K is 2 ton which is mainly contributed by iron yoke and pole. Two stage cryo coolers have been fitted to the cryostat to take care of various heat loads coming to the cryostat. 2nd stage of cryocooler has been...
Branislav Streicher
(GSI),
Holger Kollmus
(GSI Helmholtzzentrum für Schwerionenforschung GmbH)
10/07/2014, 10:30
C-05: Cryostat technology
Poster presentation (105min)
The cryogenic system for the superconducting SIS100 synchrotron is designed using three entry points with Feed Boxes (FBs). Each FB will supply two sextant sections, i.e. one third of the accelerator ring with liquid helium for magnet, beam pipe vacuum chamber and bus-bar cooling as well as gaseous helium for thermal shield cooling. Each sixth of the ring consists of one cold arc and a...
Mr
Nico Dittmar
(Technische Universitaet Dresden)
10/07/2014, 10:30
C-05: Cryostat technology
Poster presentation (105min)
The onset of thermoacoustic oscillations (TAO) in transfer lines results in an increased evaporation rate of stored cryogen. As a consequence the re-liquefaction effort increases as well as the observed pressure rise in the storage dewar, whereas the latter may cause critical pressure levels. Therefore, the onset of TAO has to be mitigated. The onset of TAO in flexible transfer lines at liquid...
Dr
Peng Han
(Institute of Plasma Physics Chinese Academy of Sciences)
10/07/2014, 10:30
C-05: Cryostat technology
Poster presentation (105min)
A 150 kJ high temperature superconducting magnetic energy storage (HTS-SMES) system is under manufacturing in China. This paper focuses on the structural design and analysis of the SMES cryogenic system. The cryogenic system is designed and manufactured to maintain the operating temperature. The system includes a vacuum vessel, its thermal radiation shield, its supporting devices, conduction...
Hugo Bajas
(CERN)
10/07/2014, 10:30
C-05: Cryostat technology
Poster presentation (105min)
In the scope of the High Field Magnets work package of the
European FP7-EuCARD project, the structure of the future dipole magnet RMC and FRESCA2 has been be tested at liquid nitrogen temperature replacing the actual Nb3Sn-based coils by aluminium dummy coils. Such test aims at measuring during the cooling the evolution of the mechanical stresses and the temperatures via compensated strain...
Mr
Sadanori Iwai
(Toshiba Corporation)
10/07/2014, 10:30
C-05: Cryostat technology
Poster presentation (105min)
A cryogen-free 25 T superconducting magnet is under development by using a REBCO insert coil which generates 11 T in a 14 T background field of outer low temperature superconducting (LTS) coils. The ac-loss of the insert coil during a field ramping is approximately 10 W, which is difficult to be cooled at the operating temperature of the LTS coils, 4 K. However, a REBCO coil can operate at a...
Mr
Chris Wulffers
(High Field Magnet laboratory, Radboud University Nijmegen)
10/07/2014, 10:30
C-05: Cryostat technology
Poster presentation (105min)
The High Field Magnet Laboratory of the Radboud University Nijmegen is developing a 45 T hybrid magnet system that comprises a 12.3T, 600 mm bore Nb3Sn/Cu CICC based superconducting outsert magnet and a 32.8 T, 22 MW resistive insert magnet of the Florida-Bitter type.
The cryostat holding the CICC coil should also be able to withstand significant fault forces that may result from the...
Dr
Meifen Wang
(Institute of High Energy Physics, Chinese Academy of Sciences)
10/07/2014, 10:30
C-05: Cryostat technology
Poster presentation (105min)
The experiment designed to search for dark matter WIMPs scattering off 1500L liquid argon(LAr) in an ultra-low background cryostat, will be located in the JINPING Mountain, China. A LAr thermosta, with a self-circulation argon liquefaction system by using two pulse tube cryocoolers (80W@80K), is developed in preparation of this experiment. Due to both the less gas bubble formation and the...
Shrikant Pattalwar
(STFC Daresbury Laboratory, UK)
10/07/2014, 10:30
C-05: Cryostat technology
Poster presentation (105min)
A prototype cryomodule to test the crab cavities for the HILumi-LHC is being designed and will be tested on SPS at CERN in 2016. The cryomodule design consists of a unique open access structure facilitating loading of the cavity-assembly from sides. It also provides access to internal components quickly and easily even after installation. Design of the radiation shield and the cooling scheme...
