Conveners
C1Or2B - Superconducting RF Systems, Power Cables, and Leads I
- Jonathan Demko (LeTourneau University)
- Thomas Nicol (Fermilab)
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Sastry Pamidi (The Florida State University)22/07/2019, 16:00Contributed Oral Presentation
High temperature superconducting (HTS) power cables are expected to be used in electric aircraft and ships that will have integrated power systems. There have been a few studies on understanding electrical faults in power systems consisting of HTS cables. However, there are no comprehensive studies on the response of HTS cables for various kinds of electrical faults. We have recently initiated...
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Dr Sastry Pamidi (The Florida State University)22/07/2019, 16:15Contributed Oral Presentation
Power systems in electric transportation applications and some power grids are being designed with medium voltage DC (MVDC) systems to achieve high power density and take advantage of the new developments in power electronics. The coaxial dipole superconducting gas-insulated line (S-GIL) is a high temperature superconducting (HTS) cable design which shows great potential to provide a high...
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Ram Dhuley (Fermilab)22/07/2019, 16:30Contributed Oral Presentation
Superconducting radio frequency (SRF) cavities are traditionally cooled by immersion in liquid helium, which enforces building and operating complex cryogenic infrastructure. A simpler alternative for cooling the cavities is to conductively couple the cavities with closed-cycle regenerative cryocoolers. In this contribution, we will showcase the development of an experimental setup for...
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Dr Dhananjay Ravikumar (Brookhaven National Laboratory)22/07/2019, 16:45Contributed Oral Presentation
Any upgrade of the existing Relativistic Heavy Ion Collider (RHIC) to an electron-ion collider (eRHIC) at Brookhaven will employ superconducting radio frequency (SRF) cavities. These SRF cavities will be used to accelerate the electron beam in the new machine. External and internal mechanical, acoustic, electrical excitation sources, typically refered to as microphonics, cause disturbances to...
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Jonathan Demko (LeTourneau University)22/07/2019, 17:00Contributed Oral Presentation
High temperature superconducting (HTS) power transmission cables are cooled to operating temperatures typically below 80 K using liquid nitrogen or gaseous helium. HTS cables are being considered for use in connecting substations to allow transformers to share load, or for long distance, low loss electrical power transmission. One interesting feature of HTS cables is that they have been shown...
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Dr Mark Kimball (NASA/Goddard Space Flight Center)22/07/2019, 17:15Contributed Oral Presentation
We report the use of a series of high-temperature superconducting leads in a cryostat that require no soldering to replace in the event of a failed lead. The temperature range spanned by the leads is 50 to 3 Kelvin and they typically carry currents up to 4 amperes although they have a much higher capacity in this temperature range. The leads are integrated into the cryostat by clamping both...
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Shabagin Eugen (Karlsruhe Institute of Technology (KIT))22/07/2019, 17:30Contributed Oral Presentation
Current leads supply electrical energy from a room-temperature power supply to a superconducting application, representing thus a major thermal load. State-of-the-art cooling solutions use either open (vapor cooled) or multi-stage closed cycle systems. The multi-stage concept can be integrated in one cryogenic mixed refrigerant cycle (CMRC), where a wide-boiling fluid mixture absorbs the heat...
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