Conveners
M2PoB - Cryogenic Materials III: Testing and Methods
- Karl Hartwig (Texas A&M University)
- Makoto Takayasu (MIT)
Prof.
Junjie Wang
(Technical Institute of Physics and Chemistry, CAS), Mr
Kaixuan Gu
(Technical Institute of Physics and Chemistry, CAS), Mr
Liubiao Chen
(Technical Institute of Physics and Chemistry, CAS)
6/30/15, 9:00 AM
ICMC-14 - Cryogenic Materials Testing and Methods
Poster Presentation
This paper introduces a cryogenic tensile testing apparatus for micro-samples cooled by a miniature pulse tube cryocooler. At present, tensile tests are widely applied to measure the mechanical properties of materials; most of the cryogenic tensile testing apparatus are designed for samples with standard sizes, while for non-standard size samples, especially for micro-samples, the tensile...
Rajeev Hatwar
(Florida State University)
6/30/15, 9:00 AM
ICMC-14 - Cryogenic Materials Testing and Methods
Poster Presentation
High Temperature Superconducting (HTS) materials have been demonstrated to be suitable for applications in shielding of both DC and AC magnetic fields. Magnetic shielding is required for protecting sensitive instrumentation from external magnetic fields and for preventing the stray magnetic fields produced by high power density equipment from effecting neighboring devices. HTS shields have...
Cedric Garion
(CERN)
6/30/15, 9:00 AM
ICMC-14 - Cryogenic Materials Testing and Methods
Poster Presentation
The High Luminosity LHC (HL-LHC) project aims at increasing the luminosity (rate of collisions) in the Large Hadron Collider (LHC) experiments by a factor of 10 beyond the original design value (from 300 to 3000 fb-1). It relies on new superconducting magnets, installed close to the interaction points, equipped with new beam screen. This component has to ensure the vacuum performance together...
Ms
Isabel Catarino
(Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa)
6/30/15, 9:00 AM
ICMC-14 - Cryogenic Materials Testing and Methods
Poster Presentation
The cold head on mechanical Pulse Tube Cryocoolers (PTCs) are subject to substantially less mechanical vibration and electromagnetic interference compared to that typically found in Gifford MacMahon coolers. However, thermal fluctuations at the PTC frequency are still present at the cold-head, typically at a level of 200 mK peak-to-peak at 1.4 Hz for a Cryomech Model PT405 cooler running at 4...
Federico Scurti
(NC State University)
6/30/15, 9:00 AM
ICMC-08 - Superconductor Stability and AC Losses
Poster Presentation
A novel quench detection method is developed and tested using optical fibers as distributed sensors of temperature and strain. In particular, the technique is based on the comparison of Rayleigh backscattering signals of a reference and perturbed state. A spectral shift quantifies the mismatch between the two conditions, which depends on temperature and strain changes between the two compared...
James Tuttle
(NASA/GSFC)
6/30/15, 9:00 AM
ICMC-14 - Cryogenic Materials Testing and Methods
Poster Presentation
High-emissivity (black) surfaces are commonly used on deep-space radiators and thermal radiation absorbers in test chambers. Since 2011 NASA Goddard Space Flight Center has been measuring the total hemispheric emissivity of such surfaces from room temperature down to 20 Kelvin using a test apparatus that fits inside a small laboratory cryostat. We report the latest data from these...
