A visible camera diagnostic has been developed to study the Helically Symmetric eXperiment (HSX) limiter plasma interaction. A straight line view from the camera location to the limiter was not possible due to the complex 3D stellarator geometry of HSX, so it was necessary to insert a mirror/lens system into the plasma edge. A custom support structure for this optical system tailored to the HSX geometry was designed and installed. This system holds the optics tube assembly at the required angle for the desired view to both minimize system stress and facilitate robust and repeatable camera positioning. The camera system has been absolutely calibrated and using Hα and C-III filters can provide hydrogen and carbon photon fluxes, which through an S/XB coefficient can be converted into particle fluxes. The resulting measurements have been used to obtain the characteristic penetration length of hydrogen and C-III species. The hydrogen λiz value shows reasonable agreement with the value predicted by a 1D penetration length calculation.
Skip Nav Destination
Article navigation
December 2017
Research Article|
December 22 2017
Development of a 3-D visible limiter imaging system for the HSX stellarator
C. Buelo;
C. Buelo
a)
University of Wisconsin–Madison
, Madison, Wisconsin 53706, USA
Search for other works by this author on:
L. Stephey;
L. Stephey
University of Wisconsin–Madison
, Madison, Wisconsin 53706, USA
Search for other works by this author on:
F. S. B. Anderson;
F. S. B. Anderson
University of Wisconsin–Madison
, Madison, Wisconsin 53706, USA
Search for other works by this author on:
D. Eisert;
D. Eisert
University of Wisconsin–Madison
, Madison, Wisconsin 53706, USA
Search for other works by this author on:
D. T. Anderson
D. T. Anderson
University of Wisconsin–Madison
, Madison, Wisconsin 53706, USA
Search for other works by this author on:
a)
Electronic mail: cjbuelo@wisc.edu
Rev. Sci. Instrum. 88, 123508 (2017)
Article history
Received:
August 18 2017
Accepted:
December 05 2017
Citation
C. Buelo, L. Stephey, F. S. B. Anderson, D. Eisert, D. T. Anderson; Development of a 3-D visible limiter imaging system for the HSX stellarator. Rev. Sci. Instrum. 1 December 2017; 88 (12): 123508. https://doi.org/10.1063/1.5000855
Download citation file:
Sign in
Don't already have an account? Register
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Sign in via your Institution
Sign in via your InstitutionPay-Per-View Access
$40.00
197
Views
Citing articles via
Related Content
Impact of magnetic islands in the plasma edge on particle fueling and exhaust in the HSX and W7-X stellarators
Phys. Plasmas (May 2018)
HSX as an example of a resilient non-resonant divertor
Phys. Plasmas (March 2017)
Absorption Of X‐Wave At The Second Harmonic In HSX
AIP Conference Proceedings (December 2003)
First results from the multichannel interferometer system on HSX
Rev Sci Instrum (March 2003)
Development of beam emission spectroscopy in the helically symmetric experiment stellarator
Rev. Sci. Instrum. (June 2021)