Current Status of Isotope Separator On-Line of BRIF Project （BRIF-ISOL）.pdf

维普资讯 78 AnnualReportofChinaInstituteofAtomicEnergy 2007 CurrentStatusofIsotopeSeparatorOn-Line ofBRIFProject(BRIF-ISOL) CUIBao—qun，MAYing-jun，MARui—gang，TANGBing，HUAN GQing—hua， JIANG Cong，JIANGWei—sheng ThedesignofBRIF·ISOLhasbeeninprogressin2007，themajorprorgessesrelatedtohteproject arereported．Th emechanicaldesign oftargetion sourceisunderway,hteoptimizeofhteextraction electrodehasbeencarriedouttominimizehtebeam emittance．Th ehna dlingschemeofradioactiveion sourcena ditsnerabyinstrumentsisfurtheroptimi zed，withinthisscheme，htetragetionsourceandits nearbyinstrumentsraeassembledintodifferentmodules，htemodulecna beremovedtoahotcellfor maintenancewihtoutmanual intervene．A demonsrtationprototypehasbeendesing edna dwillbetested soon．Th eLD31Alumi num alloyhasbeenselectedashtematerial ofhtevacuum chma berofrtargetion sourcena dnearbyinstrumentstoreducehteactivationcausedbyhighenergyneurtonsfrom target．Th e suppliersofhtehotcellofrmaintennaceoftargetionsourcehavebeencontactedofrmnaufacture；hte contractwillbesing edsoon． Themechanicalparma etersofsevendipolemagnetsinBRIF-ISOLhavebeendetermined；hteyrae readyofrplacingorder．Toelimi natehteaberrationrfom htemagnets，3rdordersurfacecoilshavebeen testedonna existingdipo le，htemeasurementvalueiswellconsistentwiht designvalue．Th eproblems foundinhtetestsuchashighertemperatureofcircuitborad，non—zerofieldinhtecenterwillbefurther investigated．Th eprama etersofappraautsofrmang eticfieldmeasurementhavebeendeterminednadhte suppliershasbeencontacted，itisreadytoplaceorder．Th efielddistributionofhteelectrosatticlensused inBRIF—ISOLhasbeencalculatedna ditsmechanicaldesignwillbecarriedout． Inhteaspectofbema diang osticsinstruments，hteassemblydrawingofemittancena dwiresscanner hasbeenfinished．Th ephysicaldesignofaemi ttancenistrumen