ICEC/ICMC 2014 Conference

Session

Wed-Mo-Orals Session 7

9 Jul 2014, 11:00

Conveners

Wed-Mo-Orals Session 7: Safety, Standards, Instrumentation and Current Leads

• Johan Bremer (CERN)

149. [Invited Oral] Controlled Cold Helium Spill Test in the LHC Tunnel at CERN

Torsten Koettig (CERN)

09/07/2014, 11:00

C-17: Safety, reliability and standards

Invited Oral (30min)

The helium cooled magnets of the LHC particle accelerator are installed in a confined space, formed by a 27 km circumference 3.8 m diameter underground tunnel. The vacuum enclosures of the superconducting LHC magnets are protected by a lift plate against excessive overpressure created by eventual leaks from the magnet helium bath, or from the helium supply headers. A three-meter long no stay...

368. Modelling and experimental verification of the pressure wave following a gaseous helium storage tank rupture

Mr Maciej Grabowski (Wroclaw University of Technology)

09/07/2014, 11:30

C-17: Safety, reliability and standards

Oral presentation (15min)

Helium inventory in high energy accelerators, tokamaks and free electron lasers may exceed tens of tons. The gaseous helium is stored in steel tanks under the pressure of 20 bar and at environment temperature. Accidental rupture of any of the tanks filled with the gaseous helium will create a rapid energy release in form of physical blast. An estimation of pressure wave distribution following...

275. SQUID-based noise thermometer for sub-millikelvin refrigerators

Mr Marco Schmidt (Physikalisch-Technische Bundesanstalt)

09/07/2014, 11:45

C-16: Instrumentation and process control

Oral presentation (15min)

The magnetic-field fluctuation thermometer (MFFT) is a high-accuracy SQUID-based noise thermometer suitable for sub-Kelvin thermometry. It consists of a highly sensitive low-Tc SQUID magnetometer and a metal body in contact with the temperature stage to be measured. The SQUID is used to inductively detect magnetic field fluctuations that arise from the thermal motion of electrical charges in...

314. Standardization in Cryogenic Thermal Insulation Systems

Mr James Fesmire (NASA)

09/07/2014, 12:15

C-17: Safety, reliability and standards

Oral presentation (15min)

The close relationship between industrial energy use and cryogenics drives the need for optimized thermal insulation systems. Emerging cryofuels usage is enabled by adequate isolation of the liquid hydrogen or liquefied natural gas from the ambient environment. Thermal performance data for the total insulation system, as rendered, are essential for both engineering designs and cost-benefit...

256. Cryogenic commissioning of the new Current Lead Test Facility CuLTKa

Mr Thomas Richter (Karlsruhe Institute of Technology (KIT))

09/07/2014, 12:30

C-10: Superconducting current leads and links

Oral presentation (15min)

The Current Lead Test facility Karlsruhe (CuLTKa) has been constructed to optimize the capabilities for current lead testing at the Karlsruhe Institute of Technology (KIT). The facility comprises five cryostat vessels including two test cryostats connected by transfer lines to the 2 kW refrigerator. Each test cryostat holds two current leads with a superconducting short circuit connector. The...