7569

7041

كارشناسي ارشد

هسته اي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده فيزيك

1391

ده،97ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

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ظفرا... كلانتري

15/12/91

مريم حسنوند

فيزيك

ID7041

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

Investigation of heating and current drive in Spherical Tokamak NSST using lower hybrid LH waves Maryam Afkhami m afkhaminoroozani@ph iut ac ir Date of Submission 2012 11 29 Department of physics Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor A Parvaziyan parvazin@cc iut ac i Abstract Recent experiments on the spherical tokamak has discovered the conditions to create a powerful plasma easy shaping and amplification of stability high bootstrap current and confinement Energy The spherical torus ST fusion energy development path is complementary to the tokamak burning plasma experiment such as ITER as it focuses toward the compact Component Test Facility CTF and higher toroidal beta regimes to improve the design of DEMO and a Power Plant To support the ST development path one option of a Next Step Spherical Torus NSST device is examined NSST is a performance extension PE stage ST with a plasma current of 5 10 MA R 1 5 BT 2 7 T with flexible physics The baseline heating and current drive system for NSST is the 30 MW NBI system and a 10 MW of ion cyclotron range of frequency ICRF and high harmonic fast wave HHFW system Here we investigated lower hybrid wave interactions in the NSST reactor And found an optimal lower hybrid wave power and frequency for it Finally we compared the lower hybrid waves optimal conditions NSST NSTX spherical tokamak and TFTR tokamak torus Our results indicate that the use of lower hybrid waves in improved spherical tokamak NSST compared to the spherical tokamak generation is much better and more efficient Also comparison of the NSST tokamak and TFTR torus tokamak shows that both have been able to create a high driving current And even the ability of lower hybrid wave to reach to the center of the plasma is improved for NSST reactor Keywords Spherical Tokamak Lower hybrid Wave Heating Current drive

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