New compact and efficient local oscillator optic system for the KSTAR electron cyclotron emission imaging system
Journal Article
·
· Review of Scientific Instruments
- Department of Physics, Pohang University of Science and Technology, Pohang 37673 (Korea, Republic of)
- Ulsan National Institute of Science and Technology, Ulsan 44919 (Korea, Republic of)
- Pennsylvania State University, Old Main, State College, Pennsylvania 16801 (United States)
Electron cyclotron emission imaging (ECEI) diagnostic on Korean Superconducting Tokamak Advanced Research utilizes quasi-optical heterodyne-detection method to measure 2D (vertical and radial) T{sub e} fluctuations from two toroidally separated poloidal cross section of the plasma. A cylindrical lens local oscillator (LO) optics with optical path length (OPL) 2–2.5 m has been used in the current ECEI system to couple the LO source to the 24 vertically aligned array of ECE detectors. For efficient and compact LO optics employing the Powell lens is proposed so that the OPL of the LO source is significantly reduced from ∼2.0 m to 0.4 m with new optics. The coupling efficiency of the LO source is expected to be improved especially at the edge channels. Results from the optical simulation together with the laboratory test of the prototype optics will be discussed in this paper.
- OSTI ID:
- 22596401
- Journal Information:
- Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 11 Vol. 87; ISSN 0034-6748; ISSN RSINAK
- Country of Publication:
- United States
- Language:
- English
Similar Records
Development of electron cyclotron emission imaging system on the HL-2A tokamak
Quasi 3D ECE imaging system for study of MHD instabilities in KSTAR
Toroidal mode number estimation of the edge-localized modes using the KSTAR 3-D electron cyclotron emission imaging system
Journal Article
·
Thu Nov 14 23:00:00 EST 2013
· Review of Scientific Instruments
·
OSTI ID:22220324
Quasi 3D ECE imaging system for study of MHD instabilities in KSTAR
Journal Article
·
Fri Nov 14 23:00:00 EST 2014
· Review of Scientific Instruments
·
OSTI ID:22308926
Toroidal mode number estimation of the edge-localized modes using the KSTAR 3-D electron cyclotron emission imaging system
Journal Article
·
Sun Jun 15 00:00:00 EDT 2014
· Review of Scientific Instruments
·
OSTI ID:22308807