ICEC/ICMC 2014 Conference Report of Contributions https://indico.cern.ch/e/ICEC25-ICMC2014 ICEC/ICMC 2014 … / Report of Contributions Course 1: Cryo-Coolers Contribution ID: 0 Type: not specified Course 1: Cryo-Coolers Monday, 7 July 2014 11:00 (6 hours) Presenter: DE WAELE, Fons (Eindhoven University of Technology) Session Classification: Monday Courses September 30, 2021 Page 1 ICEC/ICMC 2014 … / Report of Contributions Course 2: Cryostat Design Contribution ID: 1 Type: not specified Course 2: Cryostat Design Monday, 7 July 2014 11:01 (5h 59m) Presenter: WEISAND, John (European Spallation Source) Session Classification: Monday Courses September 30, 2021 Page 2 ICEC/ICMC 2014 … / Report of Contributions Course 3: Superconducting Materi … Contribution ID: 2 Type: not specified Course 3: Superconducting Materials for Power Applications Monday, 7 July 2014 11:02 (5h 55m) Presenter: TIXADOR, Pascal (CNRS - Grenoble) Session Classification: Monday Courses September 30, 2021 Page 3 ICEC/ICMC 2014 … / Report of Contributions Excursion 1 to AmpaCity in Essen … Contribution ID: 3 Type: not specified Excursion 1 to AmpaCity in Essen/Germany (cable project) and High Magnetic Field Laboratory, HMFL - Nijmegen Friday, 11 July 2014 08:00 (10 hours) Session Classification: Technical Visits September 30, 2021 Page 4 ICEC/ICMC 2014 … / Report of Contributions Excursion 2 to Philips Healthcare, … Contribution ID: 4 Type: not specified Excursion 2 to Philips Healthcare, Stirling and Thales - Eindhoven Friday, 11 July 2014 08:00 (10h 45m) Session Classification: Technical Visits September 30, 2021 Page 5 ICEC/ICMC 2014 … / Report of Contributions Excursion 3 to MESA+ NanoLab a … Contribution ID: 5 Type: not specified Excursion 3 to MESA+ NanoLab and EMS Cryogenics and Applied Superconductivity Labs Friday, 11 July 2014 10:30 (5h 30m) Session Classification: Technical Visits September 30, 2021 Page 6 ICEC/ICMC 2014 … / Report of Contributions The dehybridization phenomenon … Contribution ID: 14 Type: Poster presentation (105min) The dehybridization phenomenon in ternary cuprates and high-Tc superconductors X-ray and photoemission studies of some ternary compounds of the R-Cu-Si system (R-rare-earth metal) and high-temperature superconductor (HTS) YBa2Cu3O6.9 had been performed.Such ob- jects selection is caused the fact that all named compounds are cuprates, in which the dehybridiza- tion phenomenon had been found. Characteristically, that all listed above ternary compounds are isostructural homologies and be- long to the TrCr2Si2 structural type. However, research of electronic structure RCuSi (R-Ce,Yb) compounds which belongs to the structural type Fe2P, and also RCu4Al8(structural type ThMn12) had been showed, that and in these compounds’ families the dehybridization phenomenon had been observed also. Thus, the display of dehybridization features in compounds of different structural types isshowed, that the mentioned phenomenon carries universal character. Consequently, it is possible to as- sume that in HTS the exceptional role in the origin of superconductivity plays atoms of copper just due to dehybridizatin influence on the structure of the electronic states. In connection with the expressed circumstances it is necessary to be stopped for finding out of dehybridization origin. Essence of the phenomenon is conditioned, first of all, by the Cu3d-shell electronic structure features. This shell is power stable due to electronic configuration 3d10and compact, able to divide the electronic states of compound’s atoms-components and to activate its to Fermi level. As a result the density of the electronic states at Fermi energies g(E) grows substantially. Primary author: Prof. NIKOLYUK, Peter (PCST) Co-authors: Dr YUSHCHENKO, Anatoliy (PCST); Mr NIKOLAICHUK, Bolodymyr (PCST); Dr STASENKO, Vladyslav (PCST) Presenter: Prof. NIKOLYUK, Peter (PCST) Track Classification: M-06: HTS Bulk September 30, 2021 Page 7 ICEC/ICMC 2014 … / Report of Contributions Investigation of Inertance Phase S … Contribution ID: 16 Type: Poster presentation (105min) Investigation of Inertance Phase Shifting Characteristics in Small Scale Pulse Tube Cryocooler Wednesday, 9 July 2014 14:15 (1h 45m) Phase shifting characteristics of inertance tube in small scale pulse tube cryocooler are investi- gated experimentally. It was found that the length of inertance tube whose diameter is 1mm has a more significant influence on the optimal frequency of the pulse tube cryocooler than theiner- tance tube with diameter 3mm. The performances of the pulse tube at each optimal frequency is not significantly affected when the length of inertance tubes with 1mm diameter and3mmdiam- eter is changed . The compressor dynamic behavior as influenced by the inertance tube is investigated too.Itwas found that in the case of the best performance of the cryocooler dynamic behavior of the compres- sor is more sensitive to the length of the inertance tube. Primary authors: Dr CHEN, Houlei (Technical Institute of Physics and Chemistry, CAS, China); Prof. CAI, Jinghui (Technical Institute of Physics and Chemistry, CAS, China); Mr TANG, Qingjun (Technical Institute of Physics and Chemistry, CAS, China) Presenter: Dr CHEN, Houlei (Technical Institute of Physics and Chemistry, CAS, China) Session Classification: Wed-Af-Posters Session 2.2 Track Classification: C-02: Cryocoolers- Pulse tube, Stirling, Magnetic and other cool- ers September 30, 2021 Page 8 ICEC/ICMC 2014 … / Report of Contributions Novel Numerical Model for Pulse … Contribution ID: 17 Type: Poster presentation (105min) Novel Numerical Model for Pulse Tube and String Cooler A novel one-dimension theoretical model of oscillating flow in pulse tube cryocooler and String cryocoooler is established. The model is constructed in Lagrange perspective instead of Euler approach. Limited gas amount in the closed system of the cryocooler supplies feasibility for the model. The model is helpful to explain the mechanism of regenerative cryocooler, even inertance tubes in pulse tube cryocooler. Gas in the cryocooler is divided into finite small elements, and by using this model to calculate the physics of the elements in the regenerative cryocooler, processes of gas flow and heat transfer between gas and solid can be present more exactly. Besides, thermodynamic cycle of each gas element can be achieved. Based on the thermodynamic cycles, loss of each gas element in the cooler can be found out easily and it is helpful to improve performance of cryocooler. Cooling process, cold end temperature and many other parameters of the regenerative cryocooler can be predicted by this model Primary authors: Dr CHEN, Houlei (Technical Instituye of Physics and Chemistry, CAS, China); Prof. CAI, Jinghui (Technical Instituye of Physics and Chemistry, CAS, China); Mr TANG, Qingjun (Technical Instituye of Physics and Chemistry, CAS, China) Presenter: Dr CHEN, Houlei (Technical Instituye of Physics and Chemistry, CAS, China) Track Classification: C-02: Cryocoolers- Pulse tube, Stirling, Magnetic and other cool- ers September 30, 2021 Page 9 ICEC/ICMC 2014 … / Report of Contributions Commercial Electronic Componen … Contribution ID: 21 Type: Poster presentation (105min) Commercial Electronic Components and Silicon-on-Sapphire ICs at Extreme Cryogenic Temperatures Tuesday, 8 July 2014 14:15 (1h 45m) Electronic circuits generally perform well at moderately cold temperatures, but can show inter- esting and negative behaviors as extreme cryogenic regimes are reached. This paper looks at the performance of Silicon-on-Sapphire (SOS) and selected commercial silicon devices operating to temperatures at and below the freezing point of nitrogen. While expected freeze-out behavior is observed clearly in a commercial silicon device (1N4001 rectifier), SOS resistors and transistors tested using the same setup did not experience this effect, and in some cases stayed reasonably well-behaved to 5 Kelvin. However, unlike other reported investigations of SOS devices operating at extreme cryogenic temperatures, strong kink-effects were observed, especially for devices oper- ating at low Vgs overdrives (weak inversion). These results point out both problems and promises of developing electronics in an RF and mixed-signal IC process suitable for use in exploring the surface of outer-planets and their moons. Primary author: Mr MELTON, Steven (Honeywell Co.) Co-authors: Dr RYS, Andrew (Kansas State University); Mr FUND, Andy (Kansas State Univer- sity); Mr BURRESS, Weston (Sikorsky Aircraft Co.); Dr KUHN, William (Kansas State University) Presenter: Dr RYS, Andrew (Kansas State University) Session Classification: Tue-Af-Posters Session 1.3 Track Classification: C-12: Various applications of superconductors September 30, 2021 Page 10 ICEC/ICMC 2014 … / Report of Contributions Heat transfer simulation to liquid … Contribution ID: 22 Type: Poster presentation (105min) Heat transfer simulation to liquid nitrogen from HTS tapes at current overloads Wednesday, 9 July 2014 14:15 (1h 45m) Knowledge of HTS materials behavior at overload currents is important to design fault current limiters or fault protection systems of electro-technical devices. Recently we observed sharp volt- age peaks during rectangular current pulses on HTS tapes cooled by boiling liquid nitrogen. We explain these peaks by analysis of transient cooling regimes in liquid nitrogen. It is common knowl- edge that a homogeneous liquid can withstand certain amount of superheat before switch to the boiling phase. In the transient regimes