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Fusion reactor; breeding blanket; neutronics; tritium breeding ratio

Steady State Tokamak-2 (SST-2) will be an intermediate fusion machine before Indian DEMOnstration power reactor (DEMO) development to realise the reactor technologies. It is designed for fusion gain Q = 5 andfusion power in the range of 100–300 MW. Nuclear design analyses of SST-2 machine have been carried out to support the conceptual design work. Analyses have been carried out for two breeding blanket concepts: Indian lead–lithium ceramic breeder (LLCB) and helium-cooled ceramic breeder (HCCB). The analyses assess the tritium production and radiation shielding capability of the machine referring to the engineering design parameters. In this study, one-dimensional radiation transport calculations have been performed to assess the SST-2 nuclear responses for 1 full power year (FPY) operation. Nuclear responses such as tritium breeding ratio (TBR), various radiation loads to toroidal field (TF) coil have been calculated to obtain the radial build-up of SST-2 capable of breeding tritium and satisfying the shielding requirements. The assessment has been made using the ANISEN code andFENDL 2.1 cross-section library. It is observed that the TBRs with LLCB and HCCB blankets are 0.85 and 0.94, respectively. Shielding calculations confirm that the radial build is sufficient to protect the superconducting TF coils for 1 FPY.

CHANDAN DANANI^{1 2} DEEPAK AGGARWAL¹ H L SWAMI¹ VINAY MENON¹ RITESH SRIVATSAVA¹ AASHOO SHARMA¹ DEEPTI SHARMA¹ M HIMA BINDU¹ JYOTI AGRAWAL¹ M MANOAH STEPHEN¹ NAVEEN RASTOGI¹ PRAMIT DUTTA¹ SOMESWAR DUTTA¹ UPENDRA PRASAD^{1 2} M WARRIER^{2 3} R SRINIVASAN^{1 2}

1. Institute for Plasma Research, Bhat, Gandhinagar 382 428, India
2. Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India
3. Computational Analysis Division, Bhabha Atomic Research Centre, Visakhapatnam 530 012, India

Published

1 February 2019

Manuscript received

19 February 2018

Manuscript revised

14 May 2018

Accepted

19 June 2018

Early published

Unedited version published online

Final version published online

2 January 2019