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1、FusionEngineeringandDesign81(2006)12391244NeutronicsanalysisforacompactreversedsheartokamakCRESTQ.Huanga,b,∗,S.Zhengb,L.Lub,R.Hiwataric,Y.Asaokac,K.Okanoc,Y.OgawaaaTheUniversityofTokyo,2-11-16Yayoi,Bunkyo-ku,Tokyo113-8656,JapanbInstituteofPlasmaPhysics,ChineseAcademyofSciences,P.O.Box1126,H
2、efei,Anhui230031,ChinacCentralResearchInstituteofElectricPowerIndustry,2-11-1,Iwadokita,Komae-shi,Tokyo201-8511,JapanReceived18February2005;receivedinrevisedform22September2005;accepted22September2005Availableonline27December2005AbstractThecompactreversedsheartokamakCRESTisaconceptualtokama
3、kreactordesignwithhighplasma,highthermalefficiency,competitivecostandwater-cooledferriticsteelcomponents.InthismanuscriptneutronicsanalysisonCRESTispresentedbasedonthethree-dimensional(3D)modelandcalculationsbyMCNP/4CcodeandFENDL/2.0datalibrary.Thecomparisonamongtheresultsoftritiumbreedingr
4、atio(TBR)fortheone-dimensional(1D),two-dimensional(2D)and3Dcalculationsshowsthattheresultsareconsistentwitheachother.Thesystemwouldbetritiumself-sufficientwhenconsideringtheblanketcoveragefraction,etc.andevensomeuncertainty.Ithasanenergymultiplicationof1.38.Themaximumneutronwallloadingandmax
5、imumdamagerateatthefirstwall(FW)are6.30MW/m2and51.9dpa/FPY,respectively.TheFWmaterialneedstobereplacedevery3.8yearsofoperationwithanavailabilityof75%iftheneutrondamageofferriticsteelisassumedtolimitto150dpa.ThetotalnuclearheatforTFcoilsisunderthelimitforTFcoilsinITERcase.Thenuclearheatdensit
6、yforTFcoilsatthemid-planeisroughlythesameasthelimitforITER.©2005ElsevierB.V.Allrightsreserved.Keywords:Neutronics;CREST;3Dcalculations1.Introductionhighthermalefficiency,competitivecost,solidpeb-blebedblanketandwater/steam-cooledferriticsteelThecompactreversedsheartokamakCREST[1]components.T
7、able1givesthemainparametersoftheisaconceptualtokamakreactorwithhighplasma,device.SomeofthemaresimilartothoseoftheITERadvancedmodeplasma[2].Ithas14largeTFcoilsand14largehorizontalports.ThedesigntargetofCREST∗Correspondingauthor.Tel.:+865515593328;istogai
