High-Power Test of Chemical Vapor Deposited Diamond Window for an ECRH System in SST-1

Author

Shukla, Braj Kishore ; Babu, Rajan ; Kushwah, Mahesh ; Sathyanarayana, K. ; Patel, Jatin ; Rao, S. Laxmikant ; Dhorajiya, Pragnesh ; Patel, Harshida ; Belsare, Sunil ; Rathod, Vipal ; Patel, Satish D. ; Bhavsar, Vishal ; Solanki, Priyanka A. ; Sharma, Anj

Author_Institution

Inst. for Plasma Res., Gandhinagar, India

Volume

41

Issue

7

fYear

2013

fDate

Jul-13

Firstpage

1794

Lastpage

1798

Abstract

High-power tests on chemical vapor deposited (CVD) diamond window are carried out using 82.6-GHz Gyrotron. 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 Gycom Russia and a mirror box assembly is fabricated at Institute for Plasma Research. 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 a 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 a dummy load for continuous wave test. The CVD window is tested maximum power up to 60 kW in pulse duration of 600 s.

Keywords

Tokamak devices; chemical vapour deposition; mirrors; plasma radiofrequency heating; plasma toroidal confinement; CVD diamond window; CVD window testing; ECRH system; Gaussian pattern; Gycom Russia; Institute for Plasma Research; SST-1; arc detectors; calorimetric dummy load; chemical vapor deposition; continuous wave test; frequency 82.6 GHz; gyrotron; high-power test; matching optic unit; mirror box assembly; mirrors; time 600 s; window protection; Assembly; Diamonds; Gyrotrons; Mirrors; Optical pulses; Optical waveguides; Tokamaks; Chemical vapor deposited (CVD) diamond window; ECRH; Gyrotron; matching optic unit;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2013.2251668

Filename

6531641