PA0JAERl-Con 95-02NIJI-II Superconductin Compac Ligh Sourc FacilitKats - PDF document

PA0JAERl-Con 95-02NIJI-II Superconductin
PA0JAERl-Con 95-02NIJI-II Superconductin Compac Ligh Sourc FacilitKatsuji Emurn, Tsuyoshi Haga, Tsuyoshi Shinzato, and Hiroshi TakadaHarima Research Laboratories, Sumitomo Electric Industries, LTD.1431-12, Harima Science Garden City, Kamigori, Hyogo, 678-12 JapanABSTRACSumitom Electri Industrie establishe a synchrotroradiatio (SR facilit name "Harirn ResearcLaboratories i 1993 Th facilit i locate i HarimScienc Garde Cit wher th larg S facilit "Spring-8 bein unde construction Mai purpos o oulaborator i t develo th advance technologie o S particularl fo micro-fabricationJAERI-Con 95-02curren o abov 150m was achieve wit aaccumulatio rat o 30mA/s N transvers instabilit iobserve n th injectio energy Althoug sextupol anoctapol magnet ar installe i NIJI-III thos ar nnee t excit fo electro storageAcceleratin th store bea t th final energ o600Me i accomplishe b rampin al magnet Bea acceleratio ha bee carrie ou i current o mor tha 100m ca b accumulate ath fina energy A rampin rati betwee th excitincurrent o superconductin bendin magnet an onormalconductin quadrupol magnet i no a constanvalu throug th acceleration fro lOOMe t 600McVThi i attribute t magneti saturatio o th quadrupolmagnet a hig energ regio an edd curren generatei th vacuu duct i th bendin sectionTh bea lifetim wa approximatel 6 hour fo thstore curren o 100m a 600McV Th lifetim ithough t b limite b th vacuu pressur o2 10'*Ibrr I wil b lengthene b a decreas i pressurrise NIJI-II usuall operate da an nigh whe NIJI-IIprovide S ligh t users Electron ar usuall refilleint NIJI-II 4 time pe dayC1wavelengt (AFIG 3 Outpu S spectru4 Electro injectoElectron fo injectio int NIJI-II ar provide b acompac linac Mai parameter o th lina i liste iTabl II Th lina normall produce electron a lOOMewit a puls widt o I u s Ou fina goa o developmeno th lina i t realiz a compac machine a wel a thS ring A th en o 1993 a acceleratin gradien o22McV/ was achieved whic i th world' highes clasfo commercia machines Also th lina ha anothe feature I ca produc a long-puls bea o 10/ swhic i suitabl fo fre electro lase (FEL8'9* Ou activitie o FEL ar summarize ilatte sectionTABL II Mai parameter o th linaFIG 2 Schemati configuratio o NIJI-IITABL I Mai parameter o NIJI-IIElectro energStore bea currenCircumferencBendin magneti fielr frequencHarmoni numbeCritica wavelengtHorizonta betatro tunVertica betatro tunMomentu compactio factoEinittauc60 Me20 m18.8 m4. T158. MH11 A2.31.30.080.3 minmracath

odr frequencbea energmacropuls currenene
odr frequencbea energmacropuls currenenerg spreanormalize cmiltancrepetitio ralacceleratin gradienKlystroEIMA Y646285 MH10 Mc (shor pulse7 Me (lon pulse10 m0. %6 re minmra2 pp2 McV/TII214Electro gu i a thermioni triod gu base o adispense cathod assembl (EIMA mode Y646B) Ahig d.c voltag o 200k i applie t anode-cathodga i orde t obtai hig bea brightness A brightneso mor tha 10lllA/m2rad2 ha bee achieve iexperiment carrie ou befor installatio int th linasystemTh bunchin syste consist o thre tubessubharmoni prcbunchc (SHPB) prcbunche (PB) anbunchc (B) Th phas bunchin characteristi o thi i evaluate b a ballistic-mode simulation A aresult fo th electron emitte fro th gun mor tha40 ar bunche int a 5 degre phas sprea a thentranc o th bunchcr Th SHP i a standing-wav wit a resonanc frequenc o 476MHz I wa mado stainlcss-stccl A portio o th inne surfac o th wa coate b OFH i orde t optimiz bot ashun impedanc an Q-valu o th cavity- 2 -JAERl-Conl 95-02Th acceleratin tub i a disk-loade waveguid wita constan gradien structure Ther ar n r window obellow i th waveguid syste betwee th acceleratintube an th klystrons i orde t withstan th r poweeve i th klystro generate it maximu r powe o T stabiliz th energ o th outpu electrons twapproache ar principall effective Outpu powe o thklystro i designe fo stable sinc it modulatogenerate a voltag puls stabilize withi 0.3 owin t puls formin networ (PFN) Also th resonancfrequenc o th acceleratin tub i stable sinc ittemperatur i controlle withi ±0.0 degre b a watercoolin system5 Bcamline an ,S applicationWf hav installe five bcamlinc i NIJI-III Outlino th bcamlinc ar summarize i Tabl III I par othem th distanc fro th S ligh sourc poin t thirradiatio chambe i les tha 3m whic enable u tobtai hig photo densit b n mean inferio t GcV mediu scal S ringI thi section w briefl describ ou representativactivit o S applications Recently micro-fabrication a deep-etc x-ra lithograph ar demande i field suc a a precisio engineering advancecommunicatio technology medica engineerin an son W hav studie o LIG process Germa acrony foLithographic Galvanoformung Abformung whic allowmicrostructure o an latera shap t b fabricate witstructua height o severa hundre micrometers W havsucceede i th developmen o PZ microstructurc fomicro-ultrasoni transducers"1'TABL III Bcamlincni.m.-nu-niIII.111DI.-1PhotoPhoto 0.02-0.1 1-1 3-1 0.1-1. 0.1-1energ (keVMinotoroidaMonochro toroidamato gratinphotoExperiment .chemistrnonnonm

icrofabricationoncrystaXAFcylindricagrat
icrofabricationoncrystaXAFcylindricagratinphotocarrie ou fo lattic design Th BT consist o twbendin magnet an fiv quadrupol magnets Thbendin angl o th tw bendin magnet i ver small25. degre withou edge-focusing t realiz th quasiisochronismTABL IV Experimenta condition o FEnonnonphot cxcileproces6 Fre electro lase (FELRecently w proceede wit studie o FE i ainfra-re regio usin ou compac linac Experimentacondition a presen ar summarize i Tabl IV W havsucceede i observin a spontaneou emissio ranginfro 2 t 10/ m Mai component o th FE syste ar describe i followin sectionTh linac' outpu bea i introduce int a undulatosectio throug th bea transpor syste (BTS) Th BTfo FE require ver sever spec doubl achromati anquasi-isochronou shoul b realize i th undulatosection Simulation concernin th bea optic werbea energ currenK parametemagneti fieldFE wavelengtgai50Me2 A0.80.2 T2. ii m10Ou undulato i th Halbac typ usin Nd-Fc-permanen magnets Tota lengt o th undulato i 2wit period numbe o 50 A roundtri tim i th opticaresonato i se t b 24l harmonic o th micropulsinterva tim o 2.ins Th optica resonato consist otw concave Au-coatc OFH mirrorsGai calculatio wer carrie out i accordanc witth referenc No.II Smal signa gai o ouexperimenta syste ar estimate t b 10% I thicalculation fiv modifie coefficient ar necessar t I ou condition th modifie coefficien causei th energ sprea o th electro bea i b fa smallesi them Therefore w hav trie t find ou th optimucondition whic enabl t obtai th energ sprea oles tha 0.9%7 ConclusioNIJI-II superconductin compac ligh sourc facilitwa operate a ou newl opene Harim ResearcLaboratorie i Harim Scienc Garde City NowadaysNIJI-II routinel operate i 600McV-100m anprovide S ligh t user fo 1 hour i a day W ar jus th developmen o advance technologie oS applications Also w inten t upgrad quanturadiation equipmen suc a FELReference1 H.Takad e al. Jpn J Appl Pliys 30 8 (19912 K.Etnun e al. Proc 7t Sytnp Accelerato Scienc anTechnology RCN Osaka 34 (19893 K.Etnur e al. Rev Sci lustrum 63 I (IW24 T.Tomimasu Jpn J Appl Phys 26 74 (19875 K Etnur e al. Sumitom Tech Rev 3 (19956 THag c al. i Ihi proceeding H.Takad c al. "Synchrotro Radiatio Facilitie iAsia" IONICS Toky (1W48 K.Einur e al. Pro 20t Linea Accelerato Meetin iJapan Osak (19959 T.Shinzal e al. i thi proceeding10 Y.Hiral e al. Proc IEE Micr Electr MechanicaSystem Workshop (199511 P W.vii Amersfoor e al. Th FELI projec statu repor Apri 1988Rijiilii/i/c Repor ((-17-2