Thermal ion orbit loss and radial electric field in DIII-D
- General Atomics, San Diego, CA (United States)
- Univ. of California San Diego, La Jolla, CA (United States)
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
A relatively simple model for the generation of the radial electric field, Er, near the outboard boundary in a tokamak is presented. The model posits that Er is established to supply the return current necessary to balance the thermal ion orbit loss current. Comparison with DIII-D data is promising. Features of the model that promote a more negative edge Er are higher ion temperature, lower density, lower impurity ion content, and a shorter pathlength for orbit loss. Lastly, these scalings are consistent with experimentally established access to the high-confinement mode edge transport barrier.
- Research Organization:
- Univ. of California, San Diego, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- FC02-04ER54698; AC02-09CH11466; FG02-07AER54917; FG02-95ER54309
- OSTI ID:
- 1350067
- Alternate ID(s):
- OSTI ID: 1229614
- Journal Information:
- Physics of Plasmas, Vol. 22, Issue 8; ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 12 works
Citation information provided by
Web of Science
Web of Science
Similar Records
Experimental evidence of edge intrinsic momentum source driven by kinetic ion loss and edge radial electric fields in tokamaks
Effects of collisional ion orbit loss on neoclassical tokamak radial electric fields
Toroidal modeling of runaway electron loss due to 3-D fields in DIII-D and COMPASS
Journal Article
·
Wed Sep 21 00:00:00 EDT 2016
· Physics of Plasmas
·
OSTI ID:1350067
+10 more
Effects of collisional ion orbit loss on neoclassical tokamak radial electric fields
Dataset
·
Fri Mar 11 00:00:00 EST 2022
·
OSTI ID:1350067
+2 more
Toroidal modeling of runaway electron loss due to 3-D fields in DIII-D and COMPASS
Journal Article
·
Thu Oct 08 00:00:00 EDT 2020
· Physics of Plasmas
·
OSTI ID:1350067
+6 more