Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 513-516 |
| Number of pages | 4 |
| Journal | Fusion Engineering and Design |
| Volume | 58-59 |
| DOIs | |
| Publication status | Published - 2001 |
| MoE publication type | A1 Journal article-refereed |
Fingerprint
Cite this
}
Modified ITER in-vessel viewing system. / Ahola, H. (Corresponding Author); Heikkinen, Veli; Keränen, Kimmo; Suomela, J.
In: Fusion Engineering and Design, Vol. 58-59, 2001, p. 513-516.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Modified ITER in-vessel viewing system
AU - Ahola, H.
AU - Heikkinen, Veli
AU - Keränen, Kimmo
AU - Suomela, J.
PY - 2001
Y1 - 2001
N2 - The original ITER In-Vessel Viewing System (IVVS) prototype (Proc. of the 20th SOFT, vol. 2 (1998) 1051), which demonstrates the feasibility of linear fibre arrays for ITER in-vessel viewing, has been modified. In order to reduce the viewing time and to improve the image quality the beam dispersing mirrors was replaced by a diffractive optics element (DOE), which enhanced the laser illumination considerably. The performance of the system was tested using various target surfaces: the results obtained clearly indicate its adequacy for in-vessel viewing. Mechanical damage on smooth metal surfaces (scratches etc.) can be easily distinguished and the viewing resolution at a distance of 2 m is better than 1 mm. The IVVS has been re-designed to be compatible with the new ITER-FEAT. A conceptual study which covers all the functions and subsystems required for viewing has been completed. These results will be used to further modify the prototype: items to be tested include horizontal probe operation and laser illumination with an optical fibre.
AB - The original ITER In-Vessel Viewing System (IVVS) prototype (Proc. of the 20th SOFT, vol. 2 (1998) 1051), which demonstrates the feasibility of linear fibre arrays for ITER in-vessel viewing, has been modified. In order to reduce the viewing time and to improve the image quality the beam dispersing mirrors was replaced by a diffractive optics element (DOE), which enhanced the laser illumination considerably. The performance of the system was tested using various target surfaces: the results obtained clearly indicate its adequacy for in-vessel viewing. Mechanical damage on smooth metal surfaces (scratches etc.) can be easily distinguished and the viewing resolution at a distance of 2 m is better than 1 mm. The IVVS has been re-designed to be compatible with the new ITER-FEAT. A conceptual study which covers all the functions and subsystems required for viewing has been completed. These results will be used to further modify the prototype: items to be tested include horizontal probe operation and laser illumination with an optical fibre.
U2 - 10.1016/S0920-3796(01)00243-5
DO - 10.1016/S0920-3796(01)00243-5
M3 - Article
VL - 58-59
SP - 513
EP - 516
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
SN - 0920-3796
ER -