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4-7 June 2018
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Home > Contribution List

Contribution List

Displaying 78 contributions out of 78
Session: Session 6
Presented by Rui GE on 6 Jun 2018 at 11:00 AM
Session: Session 6
Presented by xiaofei NIU on 6 Jun 2018 at 11:20 AM
Session: Session 7
Presented by Xilong WANG on 6 Jun 2018 at 4:30 PM
accelerator, cavity, cryogenic system, cryomodule, RISP, SRF, test facility
Presented by Hyun Chul JO
Session: Session 1
Presented by Philipp ARNOLD on 5 Jun 2018 at 10:10 AM
Session: Session 1
Presented by Schnautz TOBIAS on 5 Jun 2018 at 9:40 AM
Session: Session 6
Presented by Rossi Carolina MENDEZ CORDERO on 6 Jun 2018 at 11:40 AM
Session: Session 8
Presented by Jiuce SUN on 7 Jun 2018 at 9:10 AM
The Shanghai Coherent Light Facility (SCLF), a quasi-continuous wave hard X-ray free electron laser facility, is currently under construction. The linear accelerator of SCLF project will consist of about 78 cryomodules. All superconducting components within the cryomodules, i.e., the cavities and magnets are supposed to be tested before the Cryomodule assembly. The assembled complete Cryomodules h ... More
Presented by Jiuce SUN
Session: Session 2
Presented by Shaopeng LI on 5 Jun 2018 at 11:10 AM
Session: Session 8
Presented by Ute PROBST on 7 Jun 2018 at 9:30 AM
A dedicated cryogenic infrastructure has been installed at STFC Daresbury Laboratory to qualify and deliver 84 high-beta SRF cavities for the ESS (European Spallation Source) under construction at Lund, Sweden. In order to meet the delivery schedule and optimise the test process efficiently a large 1.6 m diameter, 3.5 m tall liquid helium cryostat has been developed. RF tests are conducted on 3 ca ... More
Presented by Mr. Louis BIZEL-BIZELLOT
Session: Session 8
Presented by Jiankui HAO on 7 Jun 2018 at 8:50 AM
The superfluid helium (He II) cooled superconducting (SC) magnets show substantially better stability performance than normal helium cooled SC magnets. The thermal-hydraulics characteristics of the 1.8 K pressured helium need to been specified for the design of He II cooled SC magnet. The 1.8 K He II Cable-in-Conduit Conductors (CICC) Test Platform structure design and test procedure design have b ... More
Presented by Mr. Shuai ZHANG
Korea Superconducting Tokamak Advanced Research (KSTAR) is fully superconducting (SC) magnet tokamak which consists of 30 magnets and is made of Nb3Sn and NbTi superconductor. To keep the superconducting (SC) magnet coils of the KSTAR Tokamak at proper operating conditions, other cold components such as SC bus-lines, thermal shields, magnet structures, and current leads should be kept in their ... More
Presented by Mr. Kyung mo MOON
Helium liquefier/refrigerator plays an important role in high energy physics reserch. This report will present a 40L/h hleium liquefier developed by TIPC (Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences) and Fullcryo (Beijing Sinoscience Fullcryo). The cryogenic system will be introduced. Some recent study resluts will be shown in this presentation.
Presented by 建成 汤
Session: Session 9
Presented by Jiancheng TANG on 7 Jun 2018 at 10:40 AM
Session: Session 6
Presented by Ferrand FREDERIC on 6 Jun 2018 at 10:40 AM
- Maintenance policy for cryogenic equipment at CERN integrated in the Computerized Maintenance Management Software - Review of recent changes of maintenance approach for specific piece of equipment - Input of failure maintenance and breakdown analysis for maintenance and consolidations - Implementation of the updated strategies for Long Shut Down 2 of LHC in 2019-2020
Presented by Mr. Frederic FERRAND
The cryogenic system of JT-60SA is a French voluntary contribution to the joint European - Japanese project, a superconducting tokamak presently under assembly at Naka, Japan. This fusion experiment is part of the Broader Approach agreement between Europe and Japan in order to support ITER and to investigate advanced plasma scenarios. The contract for this cryoplant was concluded with Air Liquide ... More
Presented by pascal ROUSSEL
Session: Session 3
Presented by pascal ROUSSEL on 5 Jun 2018 at 3:00 PM
Session: Session 3
Presented by Young Ju LEE on 5 Jun 2018 at 2:00 PM
After completion of the first major maintenance works performed during the Long Shutdown period (LS1, 2013-14), the LHC came back to operation with beam in April 2015. With the progressively increased beam energy scheme, the operational margins on the cryogenic capacity were drastically reduced. The non-isothermal 4.5-20 K dynamic thermal load, intercepted by the Beam Screens system (BS), is about ... More
Presented by Gerard FERLIN
Session: Session 1
Presented by Gerard FERLIN on 5 Jun 2018 at 9:10 AM
Session: Session 5
Presented by Laurent DELPRAT on 6 Jun 2018 at 9:10 AM
The year 2018 is the last operational year of Run 2 period, which has seen increased beam-induced heat loads due to increased beam energy from 4 TeV to 6.5 TeV. Despite constraints of the operational conditions, extensive experience gained through the whole run period allowed to maintain a high level of availability as well as reducing helium losses. The key operation performance indicators of the ... More
Presented by Mr. Laurent DELPRAT
Session: Session 4
Presented by Pezzetti MARCO on 5 Jun 2018 at 4:10 PM
Since 2008, the CERN cryogenic system for the Large Hadron Collider accelerator installed on five cryogenic islands feeding a 26.7-km circumference ring deep underground tunnel is in operation. The LHC cryogenic operation support has brought new challenges and opportunities. Several consolidations and upgrades have been undertaken in the cryogenics process control system in order to maintain a hig ... More
Presented by Dr. Marco PEZZETTI
The cryogenic permanent magnet undulator (CPMU) is one new-type undulator with advantages such as higher magnetic performance compared with conventional undulators at the same magnetic period and gap. Shanghai Institute of Applied Physics (SINAP) has been studying the related technologies and developing the CPMU, and apply the CPMUs for the future SSRF upgrade and the XFEL projects in China. A sub ... More
Presented by Mrs. Shuhua WANG, Mr. Yuefeng LIU
The cryogenic permanent magnet undulator (CPMU) is one new-type undulator with advantages such as higher magnetic performance compared with conventional undulators at the same magnetic period and gap. Shanghai Institute of Applied Physics (SINAP) has been studying the related technologies and developingthe CPMU, and apply the CPMUs for the future SSRF upgrade and the XFEL projects in China. A subc ... More
Presented by Mrs. Shuhua WANG, Mr. Yuefeng LIU
The Helium Refrigeration System (HRS) of Korea Superconducting Tokamak Advanced Research (KSTAR) has been successfully operating since 2008. The KSTAR HRS is the complex system that equipscontains various components such as rotating machines, sensors, heat exchangers, valves, and so forth.etc Meanwhile, tThere have beenwere several abnormal events due to the component failures, abnormal pressure v ... More
Presented by Mr. Jae Joon JOO
As the heart of cryogenic refrigerators, the helium turbo-expander affects the stable operation of cryogenic systems. The supporting component of the turbine is bearing, the mechanical properties of which are directly related to the reliability and safety of the turbine. For the helium turbo-expander, the operating speed is high and the temperature of the working wheel is low. So it is necessary t ... More
Presented by Mrs. Shanshan LI, Dr. Bao FU, Zhiwei ZHOU
Session: Session 4
Presented by Zhongxiu LIU on 5 Jun 2018 at 5:10 PM
The cryogenic system is one of the critical sub-systems for EAST (Experimental Advanced Superconducting Tokamak) installation, which is used to provide the proper cooling power for the superconducting magnets and its other cold components. It was designed and built by the institute of Plasma Physics Chinese Academy of Sciences itself, and performed its first commissioning in 2005. At present, it i ... More
Presented by Zhiwei ZHOU
Session: Session 3
Presented by Zhiwei ZHOU on 5 Jun 2018 at 2:20 PM
Session: Session 2
Presented by Hirotaka NAKAI on 5 Jun 2018 at 11:50 AM
There are three cryogenic systems for superconducting RF cavities of superconducting accelerators in the Accelerator Laboratory of KEK. One is the 4.5K large-scale helium cryogenic system for the SuperKEKB accelerator. Others are 2K superfluid helium cryogenic systems for the Superconducting RF Test Facility (STF) and the compact Energy Recovery Linac (cERL). Brief description and operation status ... More
Presented by Hirotaka NAKAI
The superconducting linear accelerator as a booster of 15 UD pelletron accelerator is commissioned and operating for more than three years. The acceleration is achieved by a series of 97 MHZ superconducting quarter wave bulk niobium cavities at 4.2 K. In the first phase, accelerator was partly commissioned with first linac cryomodule, superbuncher, rebuncher cryostat along with 500 W capacity CC ... More
Presented by Dr. Tripti Sekhar DATTA
Session: Session 5
Presented by Kun HE on 6 Jun 2018 at 8:50 AM
Abstract. The helium turbine is the core part of helium refrigerator. In order to ensure the refrigeration capacity and reliability,the helium turbines with eddy current brake were operated in EAST cryogenic system.The helium turbines with eddy current brake and Rotor Cooling Circuit (RCC circuit),whose total braking capacity can be reached 10 kW.The turbines rotors are supported by fully ... More
Presented by Mrs. shanshan LI
Session: Session 7
Presented by Venkatraman Srinivasan KADAYAM on 6 Jun 2018 at 5:10 PM
Low temperature facility (LTF) of Tata Institute of Fundamental Research, (TIFR) Mumbai, India, has been operating and maintaining helium liquefiers, nitrogen generators for about six decades. For the past ten years, helium is liquefied using Linde make, L280 Model helium liquefier. LTF caters an annual liquid helium consumption of 125000 liquid liters by the above helium liquefier. Liquid helium ... More
Presented by Mr. KADAYAM VENKATRAMAN SRINIVASAN
Session: Session 3
Presented by Dong-Seong PARK on 5 Jun 2018 at 2:40 PM
The nuclear fusion research is in progress for the next generation energy source in many countries. The Korean large fusion device whose name is Korea Superconducting Tokamak Advanced Research (KSTAR) is made of Nb3Sn and NbTi superconductor and it is necessary to cool down to liquid temperature. In order to proper operation of the KSTAR superconducting (SC) magnets, a Helium Refrigeration System ... More
Presented by Dong-Seong PARK
Superconducting magnets must be cryogenically cooled. The magnet cold mass is immersed in a pressurized bath of superfluid helium and operated at very low temperatures ( approximately 1.9 K). The distribution of helium at pressures above atmospheric pressure is a significant engineering challenge. The secret lies in the use of reliable and efficient cryogenic infrastructure like for instance multi ... More
Presented by Rossi Carolina MENDEZ CORDERO
At the 1-MW spallation neutron source of Japan Proton Accelerator Research Complex (J-PARC), a cryogenic hydrogen system including a helium refrigerator has been in operation to generate a liquid-hydrogen-circulation flow (20 K, 1.4 MPaG, 185 g/s) as a cold-neutron-moderator. The helium refrigerator has a refrigeration power of 6 kW at 17 K under an operating pressure of 1.5 MPaG and a flow rate o ... More
Presented by Tomokazu ASO
Session: Session 8
Presented by Qing LI on 7 Jun 2018 at 8:30 AM
Session: Session 9
Presented by Joerg PENNING on 7 Jun 2018 at 10:20 AM
The European XFEL consists mainly of three parts: The superconducting linac, the undulator sections to produce light and of course the experiments. The linac operates at 2K using cold compressors. We show how to stabilize cryogenic operation by compensating heat load changes introduced by the RF system by reducing the power in the associated heaters. This includes the basic calculations ... More
Presented by Mr. J. PENNING
1. Introduction 2. Operation History 3. Tritium Detection 4. Require Ways of Maintenance
Presented by Dr. Yasuhiro MAKIDA
Session: Session 5
Presented by Makida YASUHIRO on 6 Jun 2018 at 8:30 AM
on 5 Jun 2018 at 8:00 AM
Helium is widely used at reactor cold neutron source cryogenic system(CNS). It is well known that gas purity control is very important in an expansion-turbine-based helium refrigerator.High levels impurities such as nitrogen,hydrogen or organics can cause to process faults.What's more,high hydrogen concentration will trigger the reactor.It's owing to the hydrogen concentration monitoring in CNS is ... More
Presented by Mrs. Xiaohua LAN
Superconducting radio frequency test facility, cryogenic system, cryomodule, cavity, maintenance, helium leak
Presented by Mr. KI WOONG LEE
A 2K cryogenic system was constructed for DC-SRF injector and 2x9-cell cryomodule of the Peking University Free Electron Laser (PKU-FEL) facility. A stability of the helium pressure better than ±0.1 mbar and total refrigeration capacity of 65 W at 2K temperature has been reached with stable operation. A vertical test system for superconducting cavities was set up based on the 2K cryogenic system. ... More
Presented by Dr. Jiankui HAO
To obtain high operating current and magnetic fields of Experimental Advanced Superconducting Tokomak (EAST), it is a good choice to lower the operating temperature of the toroidal field (TF) coils. Beside 4.5 K refrigeration mode, the EAST helium refrigerator has the ability to provide a refrigeration capacity of 1050W at 3.5 K, based on warm compression with cold recovery. It consists of liquid ... More
Presented by 志刚 朱
Helium forced flow cooling was demonstrated as a reliable way for superconducting (SC) magnets. For the large Cable-in-Conduit Conductors (CICC) in high magnetic field, supercritical helium forced flow cooling is utilized. A coiled sub-cooler for 4.5 K supercritical helium, which is the vital component of the system, has been designed and manufactured to supply required helium for the SC magnet. T ... More
Presented by Prof. ZhengRong OUYANG
Session: Session 4
Presented by zhuo ZHANG on 5 Jun 2018 at 4:30 PM
The European Spallation Source (ESS) is a neutron-scattering facility being built with extensive international collaboration in Lund, Sweden. The ESS accelerator will deliver protons with an average beam power of 5 MW to the target at 2.0 GeV, with a nominal current of 62.5 mA. The superconducting part of the accelerator is about 300 meters long and contains 43 cryomodules. The ESS accelerator cry ... More
Presented by Dr. xilong WANG
Session: Session 9
Presented by Laurent DELPRAT on 7 Jun 2018 at 11:00 AM
The operation of the LHC accelerator requires a large cryogenic infrastructure composed of eight independent cryogenic plants at 4.5 K, eight units at 1.8 K and the associated cryo-distribution, supplying each ring sector and using a variety of equipment with over 3’500 operating conditions to manage. Specific conditions must be set in order to allow beams to circulate, and ones that are even m ... More
Presented by Laurent DELPRAT
Session: Session 2
Presented by Alexey KOVESHNIKOV on 5 Jun 2018 at 11:30 AM
The cryogenic system is one of the key components for 40 T hybrid magnet for cooling the external cooling-shields, internal cooling-shields, outsert superconducting coil, current lead and the cryogenic distribution valve box of the hybrid magnet. Considering the complexity of the cryogenic system, a safe and stable control system is required. The control system is based on Siemens S7-300 PLC, with ... More
Presented by Mr. Ming FANG
on 5 Jun 2018 at 9:00 AM