| Title | Upper wide-angle viewing system for ITER. |
| Publication Type | Journal Article |
| Year of Publication | 2016 |
| Authors | Lasnier CJ, McLean AG, Gattuso A, O'Neill R, Smiley M, Vasquez J, Feder R, Smith M, Stratton B, Johnson D, Verlaan AL, Heijmans JAC |
| Journal | Rev Sci Instrum |
| Volume | 87 |
| Issue | 11 |
| Pagination | 11D426 |
| Date Published | 2016 Nov |
| ISSN | 1089-7623 |
| Abstract | The Upper Wide Angle Viewing System (UWAVS) will be installed on five upper ports of ITER. This paper shows major requirements, gives an overview of the preliminary design with reasons for some design choices, examines self-emitted IR light from UWAVS optics and its effect on accuracy, and shows calculations of signal-to-noise ratios for the two-color temperature output as a function of integration time and divertor temperature. Accurate temperature output requires correction for vacuum window absorption vs. wavelength and for self-emitted IR, which requires good measurement of the temperature of the optical components. The anticipated signal-to-noise ratio using presently available IR cameras is adequate for the required 500 Hz frame rate. |
| DOI | 10.1063/1.4960489 |
| Alternate Journal | Rev Sci Instrum |
| PubMed ID | 27910636 |
Submitted by kej2006 on June 6, 2018 - 4:11pm