Dipole-magnet-for-CBM-current-status煤层气的现状偶极磁铁教学课件

DipolemagnetforCBMcurrentstatus煤层气的现状偶极磁铁DipolemagnetforCBMcurrentstatus煤层气的现状偶极磁铁DipolemagnetforCBMcurrentstatus煤层气的现状偶极磁铁DipolemagnetforCBM:

currentstatus

P.G.Akishin,A.V.Alfeev,

V.S.Alfeev,V.V.Borisov,

V.V.Ivanov,E.I.Litvinenko,A.I.Malakhov,E.A.Matyushevskiy

JINR,DubnaElena.LitvinenkoCBMCollaborationMeetingDubna17Oct20081ThetaskdefinitionThemaintaskistoprovidethedesignofamagnetwith:theworkingangularacceptanceatleastof50°fortheheightofagap(1.2m)and60°forthewidthofagap(1.4m),and,forthemountinginsidethegapMVD/STSdetectors,thesizesofitsrectangularpartshouldbeatleast1.2x1.2m;themagneticyokesizealongthebeamisequalto1m;theintegralofthemagneticfieldintheregionoftheyokeofthemagnetalongthebeamfrom1to1.2T*m;themagneticfielddistribution,whichissimilartothemap“FieldMuonMagnet”,thatisthecurrentstandardforthemagneticfieldforCBMsimulations.Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct20082DipolemagnetforCBM:

currentstatus

P.G.Akishin,A.V.Alfeev,

V.S.Alfeev,V.V.Borisov,

V.V.Ivanov,E.I.Litvinenko,A.I.Malakhov,E.A.Matyushevskiy

JINR,DubnaElena.LitvinenkoCBMCollaborationMeetingDubna17Oct20081ThetaskdefinitionThemaintaskistoprovidethedesignofamagnetwith:theworkingangularacceptanceatleastof50°fortheheightofagap(1.2m)and60°forthewidthofagap(1.4m),and,forthemountinginsidethegapMVD/STSdetectors,thesizesofitsrectangularpartshouldbeatleast1.2x1.2m;themagneticyokesizealongthebeamisequalto1m;theintegralofthemagneticfieldintheregionoftheyokeofthemagnetalongthebeamfrom1to1.2T*m;themagneticfielddistribution,whichissimilartothemap“FieldMuonMagnet”,thatisthecurrentstandardforthemagneticfieldforCBMsimulations.Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct20082Technicaldrawing1.Beam;2.Rack;3.Coil;4.Adapter;5.Filler;6.Supportofamagnet;7.Magneticscreens.Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct20083TheconceptualprojectofamagnetElena.LitvinenkoCBMCollaborationMeetingDubna17Oct20084YokeofthemagnetYokematerial:

magneticallysoftsteelwiththelowcontentofcarbonYokesizes:280(310)x260x100[cm]2.8m1.4m1.2

m2.60.33

m1mElena.LitvinenkoCBMCollaborationMeetingDubna17Oct20085Windings(«theCossacksaddle»)Thetoppartofawindingwithcryostat

CoilNitricscreenElena.LitvinenkoCBMCollaborationMeetingDubna17Oct20086CryostatToppartofcryostat(frontview)Top&bottomcryostats

withconnectors(backview)1.216m0.328mtwoadapters:currentconnection;

-elementsofmonitoringsystems;transportationofheliumandnitric.Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct20087SCwindingcross-sectionVacuumcasing4.5˚K<80˚K300˚KNitricscreenHeliumvesselSCcableCoverofavacuumcasingHeliumpipeSupportofthenitricscreenHatchesPipeofthenitricscreen

(circulatingliquidnitrogen)328mm143.8mmElena.LitvinenkoCBMCollaborationMeetingDubna17Oct20088GeneralviewofthemagnetFillerfacility:evacuationofenergy;

-inputsforsubmissionofliquidhelium

andliquidnitrogen.Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct20089MagnetgeometryimplementationforTOSCAElena.LitvinenkoCBMCollaborationMeetingDubna17Oct200810Comparisonwith“MuonMagnet”UsedinCBM:“MuonMagnet”Newdesign:“Muon4”Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200811Blue–FieldMuonMagnetRed

-FieldMuon4|By|(z)x=y=0(target:z=0cm)

Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200812|B|(z,y)x=0(target:z=0cm)

Verticalplanealongthebeam:Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200813|By|(z,y)x=0(target:z=0cm)

Verticalplanealongthebeam:Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200814|B|(x,y)z=0(targetposition)z=0Verticalplaneperpendiculartothebeam:Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200815|By|(x,y)z=0(targetposition)

z=0Verticalplaneperpendiculartothebeam:Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200816|B|(x,y)z=50cm(magnetyokecenter)

z=50Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200817|By|(x,y)z=50cm(magnetyokecenter)

z=50Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200818|By|(x,y)z=50cm(inthelimitsofStation4)

Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200819|B|(x,y)z=100cm(edgeofthemagnetyoke)

z=100Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200820|By|(x,y)z=100cm(edgeofthemagnetyoke)

z=100Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200821z=160|B|(x,y)z=160cm(RICHentrance)Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200822|Bxy|(x,y)z=160cm(RICHentrance)|Bxy|=sqrt(Bx2+By2)Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200823LetusconsiderStandardandCompactRICHcases:DataobtainedfrommaterialspublishedonthesiteCbmRichMeetingTwikiElena.LitvinenkoCBMCollaborationMeetingDubna17Oct200824z=180|B|(x,y)z=180cm

(photodetectorplaneforCompactRICH)

Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200825|B|z=180cm

(photodetectorareasforCompactRICH)

0.047(->0.04)0.0580.042(0.04->0.036)Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200826z=180|Bxy|z=180cm

(photodetectorplaneforCompactRICH)

|Bxy|=sqrt(Bx2+By2)Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200827|Bxy|z=180cm

(photodetectorareasforCompactRICH)

0.047(->0.03)0.04940.028(->0.015)Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200828|B|z=190cm

(photodetectorplaneforStandardRICH)

z=190Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200829|B|z=190cm

(photodetectorareasforStandardRICH)

0.034(->0.03)0.068(->0.03)0.034(->0.029)Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200830|Bxy|z=190cm

(photodetectorplaneforStandardRICH)

0.038(->0.03)0.0330.023(->0.02)Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct200831GeometryimplementationforGeant(cbmroot)Yoke+Coils+NitricScreen+Cryostat+MagneticScreens&BasementElena.LitvinenkoCBMCollaborationMeetingDubna17Oct200832CompatibilitywithSTSgeometryElena.LitvinenkoCBMCollaborationMeetingDubna17Oct200833I)ThesuggestedengineeringdesignofthesuperconductivedipolemagnetforCBMprovidesthefollowingcharacteristics:angularacceptanceis50°fortheheightofthegap(1.2m)and60°forthelongestpartofthewidthofthegap(1.4m),andthesizesoftherectangularpartofthegap121.6x120cmshouldbesuitableforthemountingofMVD/STSdetectors;themagneticyokesizealongthebeamisequalto1m;theintegralofthemagneticfieldintheregionoftheyokeofthemagnetalongthebeamisequalto1.07T*mwhenthecurrentthroughthecoilsissettoavalue0.781MA(inthecaseof“MuonMagnet”thecurrentequalto1.447MAcorrespondstotheintegralequalto1.01T*m);thedistributionofBycomponentofthemagneticfieldalongthebeamaxisisveryclosetothemap“FieldMuonMagnet”;themeanvaluesofthethenewmagneticfieldintheregions,inwhichtheRICHphotodetectorsaretobeplaced,areabout300Gs

forthelastcalculatedfieldmap.II)The3DmodelofthemagnetwasdevelopedforTOSCA.Themagneticfieldmapwascalculatedandconvertedforcbmroot.AnewC++classwasdevelopedtosupportthechangesinthesymmetryofthefield.III)TheGeantgeometryofthemagnetwascreatedforcbmrootandtestedtogetherwiththelatestavailableSTSgeometry.IV)Thefinaldecisionaboutthesizes,shapeandpositionsofthemagneticscreensandthebasement(andmaterialofthebasement)willbemadeafterfurtherstudiesdirectedtothemagnetoptimization.ConclusionandoutlookElena.LitvinenkoCBMCollaborationMeetingDubna17Oct200834Backupslides…Elena.LitvinenkoCBMCollaborationMeetingDubna17Oct2008