High power test of CVD diamond window for ECRH system in SST-1

Author

Shukla, B.K. ; Babu, Rajan ; Kushwah, Mahesh ; Sathyanarayana, K. ; Patel, Jatin ; Rao, S.L. ; Pragnesh, D. ; Patel, Harshida ; Belsare, S. ; Vipal, R. ; Patel, Satish D. ; Vishal, B. ; Priyanka, A.S. ; Anjali, S. ; Ronak, S. ; Shmelev, Mikhail ; Belov, Y

Author_Institution

Inst. for Plasma Res., Gandhinagar, India

fYear

2011

fDate

26-30 June 2011

Firstpage

1

Lastpage

4

Abstract

High power tests on CVD diamond window are carried out using 82.6GHz Gyrotron. In order to test CVD diamond window with calorimetric dummy load, a matching optic unit is designed and fabricated with special profiled mirrors. The mirrors are fabricated by M/s. Gycom Russia and a mirror box assembly is fabricated at IPR. The mirrors and mirror box are cooled with water. The mirror box consists of four arc detectors for the protection of window. The CVD diamond window is connected to dummy load with this mirror box. The alignment of mirror is done during the testing of CVD window in pulsed condition. After achieving the desired Gaussian pattern at the exit of mirror box, system is connected to dummy load for CW test. The CVD window is tested up to 60 kW power for 10 minutes.

Keywords

Tokamak devices; fusion reactor design; fusion reactor materials; gyrotrons; mirrors; plasma CVD; plasma radiofrequency heating; plasma toroidal confinement; CVD diamond window; ECRH system; Gaussian pattern; SST-1; calorimetric dummy load; frequency 82.6 GHz; gyrotron; high power tests; matching optic unit; mirror box assembly; pulsed condition; Diamond-like carbon; CVD diamond window; ECRH; Gyrotron; matching optic unit;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering (SOFE), 2011 IEEE/NPSS 24th Symposium on

Conference_Location

Chicago, IL

ISSN

1078-8891

Print_ISBN

978-1-4577-0669-1

Electronic_ISBN

1078-8891

Type

conf

DOI

10.1109/SOFE.2011.6052320

Filename

6052320