Performance characteristics of the DIII-D advanced divertor cryopump
Abstract
A cryocondensation pump, cooled by forced flow of two-phase helium, has been installed for particle exhaust from the divertor region of the DIII-D tokamak. The Inconel pumping surface is of coaxial geometry, 25.4 mm in outer diameter and 11.65 m in length. Because of the tokamak environment, the pump is designed to perform under relatively high pulsed heat loads (300 Wm(exp -2)). Results of measurements made on the pumping characteristics for D2, H2, and Ar are discussed.
- Publication:
-
Presented at the Symposium on Fusion Engineering
- Pub Date:
- October 1993
- Bibcode:
- 1993fuen.sympS..11M
- Keywords:
-
- Cryopumping;
- Diverters;
- Heat Flux;
- Inconel (Trademark);
- Tokamak Devices;
- Argon Plasma;
- Deuterium Plasma;
- Hydrogen Plasma;
- Liquid Helium;
- Mechanical Engineering