Keyword: cyclotron
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TUPSA17 Axial Injection to a Compact Cyclotron with High Magnetic Field injection, ion, ion-source, simulation 75
 
  • V.L. Smirnov, S.B. Vorozhtsov
    JINR/DLNP, Dubna, Moscow region, Russia
  
  One of ad­van­tages of a com­pact cy­clotron over other type ac­cel­er­a­tors is a small size mainly de­fined by the fa­cil­ity’s bend­ing mag­netic field. In such cy­clotrons an ap­pli­ca­tion of an ex­ter­nal in­jec­tion is re­quired in some cases. But for high mag­netic field of the cy­clotrons (over 4-5 T) there ap­pears a se­vere prob­lem to make the 1st turns in the ma­chine with ex­ter­nal in­jec­tion of ac­cel­er­ated par­ti­cles. This paper de­scribes a pro­posal of a new cen­tral re­gion struc­ture of a com­pact cy­clotron that per­mits one to suc­cess­fully solve the prob­lem of the axial in­jec­tion into such a fa­cil­ity using a spi­ral in­flec­tor.  
 
TUPSA31 Magnetic System of Isochronous Cyclotron F250 for Proton Therapy Applications proton, synchro-cyclotron, vacuum, focusing 103
 
  • Yu.G. Alenitsky, E. Samsonov
    JINR, Dubna, Moscow Region, Russia
  • N.L. Zaplatin
    JINR/DLNP, Dubna, Moscow region, Russia
  
  In the Lab­o­ra­tory of Nu­clear Prob­lems of the JINR the pos­si­bil­ity of de­sign­ing of the isochro­nous cy­clotron F250 with the en­ergy of pro­tons 250 MeV on the basis of mag­net with the di­am­e­ter of pole 6 m, which is used for the syn­chro-cy­clotron is ex­am­ined. Syn­chro-cy­clotron many years works for ob­tain­ing the pro­tons with the en­ergy 680 MeV and with the in­ten­sity of ex­tracted beam 2.5 mkA. For the so­lu­tion of med­ical prob­lems the re­quired en­ergy of pro­tons com­prises not more than 250 MeV and de­pends on the depth of the tumor arrange­ment in­side a pa­tient. For de­ter­min­ing the re­quired en­ergy of pro­tons the in­for­ma­tion about the mean free path of pro­tons in the cor­re­spon­dence for the po­si­tion of Bragg's peak in each case is used. Nec­es­sary en­ergy of pro­tons is ob­tained by means of de­grader sys­tem pro­vid­ing a re­tard­ing the ex­tracted beam of pro­tons with 680 MeV to 250 MeV and less. In this case the uti­lized for med­ical pur­poses in­ten­sity of beam does not ex­ceed 50 nA. The pro­posed cy­clotron F250 will make it pos­si­ble to strongly de­crease the elec­tric power of mag­net and to avoid the need of beam degra­da­tion from 680 MeV to 250 MeV. For cre­at­ing the re­quired mag­netic field of the cy­clotron F250 it is nec­es­sary to change the form of steel spi­ral shims and disks, lo­cated in­side a vac­uum cham­ber of syn­chro-cy­clotron. The basic pa­ra­me­ters of the mag­netic sys­tem of the cy­clotron F250 with the con­di­tion of re­tain­ing the vac­uum cham­ber and the mag­net yoke of syn­chro-cy­clotron are given.  
 
TUPSA32 Magnetic Field Design and Calculation for the FLNR DC-280 Cyclotron extraction, ion, injection, ECR 105
 
  • I.A. Ivanenko, B. Gikal, G.G. Gulbekyan
    JINR, Dubna, Moscow Region, Russia
  • T.F. Belyakova, V.P. Kukhtin, E.A. Lamzin, S.E. Sytchevsky
    NIIEFA, St. Petersburg, Russia
  
  The isochro­nous cy­clotron DC-280 is in­tended to ac­cel­er­ate the ion beams with A/Z from 4 to 7 up to the en­ergy 8 – 4 MeV/nu­cleon. The wide range of the mag­netic field lev­els from 0.64T till 1.32T al­lows to make a smooth vari­a­tion of the beam en­ergy over the range ±50% from nom­i­nal. For op­er­a­tional op­ti­miza­tion of the mag­netic field the 11 ra­dial and 4 pairs of har­monic cor­rect­ing coils are used. The nu­mer­i­cal for­ma­tion of the mag­netic field is car­ried out. The prob­lems and so­lu­tions of DC-280 mag­netic field de­sign are de­scribed.  
 
WEX03 Production of Accelerating Equipment for Nuclear Medicine in NIIEFA. Potentialities and Prospects diagnostics, target, proton, radiation 125
 
  • M.F. Vorogushin, Yu.N. Gavrish, A.P. Strokach
    NIIEFA, St. Petersburg, Russia
  
  The D.​V.​Efremov In­sti­tute (NI­IEFA) is the leader in Rus­sia in de­sign­ing and man­u­fac­tur­ing of the ac­cel­er­at­ing equip­ment for med­i­cine. About one hun­dred of lin­ear ac­cel­er­a­tors for the beam ther­apy and more than forty cy­clotrons for pro­duc­tion of ra­dio­phar­ma­ceu­ti­cals have been de­signed, man­u­fac­tured and de­liv­ered to clin­ics of Rus­sia and some for­eign coun­tries. The equip­ment de­signed and man­u­fac­tured in NI­IEFA in its tech­ni­cal char­ac­ter­is­tics is on a par with for­eign analogs and suf­fi­ciently cheaper in ex­pen­di­tures for per­son­nel train­ing, hard­ware and soft­ware com­pat­i­bil­ity, war­ranty and post-war­ranty ser­vice, de­liv­ery of spare parts and up­dat­ing. In ac­cor­dance with Fed­eral Tar­geted Pro­grams on the de­vel­op­ment of med­ical and phar­ma­ceu­ti­cal in­dus­tries up to 2020, the pro­duc­tion fa­cil­i­ties, ma­te­r­ial and tech­ni­cal re­sources have been pre­pared for the or­ga­ni­za­tion of se­r­ial pro­duc­tion of cy­clotrons and gamma to­mo­graphs.  
slides icon Slides WEX03 [0.901 MB]  
 
WECA04 Accelerator Hadron Therapy Technique Developed at JINR proton, synchrotron, extraction, synchro-cyclotron 131
 
  • E. Syresin
    JINR, Dubna, Moscow Region, Russia
  
  Ac­cel­er­a­tor hadron ther­apy tech­nique is one of ap­plied re­searches re­al­ized at JINR. The JINR-IBA col­lab­o­ra­tion has de­vel­oped and con­structed the C235-V3 cy­clotron for Dim­itro­v­grad hos­pi­tal cen­ter of the pro­ton ther­apy. Pro­ton trans­mis­sion in C235-V3 from ra­dius 0.3m to 1.03 m is 72% with­out beam cut­ting di­aphragms; the ex­trac­tion ef­fi­ciency is 62%. The main ad­van­tage of this cy­clotron in com­par­i­son with se­r­ial com­mer­cial cy­clotrons of IBA is re­lated to higher cur­rent of the ex­tracted beam. The can­cer treat­ment is re­al­ized in JINR on the pha­sotron pro­ton beam. More than 1000 pa­tients were treated there. A pro­ject of the demon­stra­tion cen­ter of the pro­ton ther­apy is dis­cussed on base of a su­per­con­duct­ing 250 MeV syn­chro­cy­clotron. The su­per­con­duct­ing syn­chro­cy­clotron is planned to in­stall in­stead of pha­sotron in Med­ical Tech­ni­cal Com­plex of DLNP. The pro­ject of the med­ical car­bon syn­chro­tron to­gether with su­per­con­duct­ing gantry was de­vel­oped in JINR. The basis of this med­ical ac­cel­er­a­tor is the su­per­con­duct­ing JINR syn­chro­tron – Nu­clotron. One im­por­tant fea­ture of this pro­ject is re­lated to the ap­pli­ca­tion of su­per­con­duct­ing gantry.  
slides icon Slides WECA04 [1.517 MB]  
 
WECA09 Dedicated DC-110 Heavy Ion Cyclotron for Industrial Production of Track Membranes ion, acceleration, ion-source, heavy-ion 146
 
  • B. Gikal, P.Yu. Apel, S.L. Bogomolov, O.N. Borisov, V.A. Buzmakov, S.N. Dmitriev, A.A. Efremov, A.A. Fateev, G.G. Gulbekyan, I.A. Ivanenko, G.N. Ivanov, I.V. Kalagin, V.I. Kazacha, N.Yu. Kazarinov, M.V. Khabarov, I.V. Kolesov, V.A. Kostyrev, A.M. Lomovcev, V.N. Melnikov, V.I. Mironov, N.F. Osipov, S.V. Pashchenko, O.V. Semchenkova, V.A. Sokolov, A. Tikhomirov, V.A. Verevochkin
    JINR, Dubna, Moscow Region, Russia
  
  In the Lab­o­ra­tory of nu­clear re­ac­tions JINR ded­i­cated ac­cel­er­a­tor com­plex on the basis of the heavy ion cy­clotron DC110 for the in­dus­trial track mem­brane pro­duc­tion has been de­vel­oped and cre­ated. The isochro­nous cy­clotron DC110 ac­cel­er­ates the ions Ar, Kr and Xe with a fixed en­ergy of 2.5 MeV/nu­cleon and in­ten­sity of 10-15 mkA. The cy­clotron is equipped with ECR ion source - DE­CRIS-5 (18 GHz) and axial in­jec­tion sys­tem. The pole di­am­e­ter of the mag­net is 2 m. Isochro­nous mag­netic field formed by shim­ming sec­tors on the level of 1.67 T. Ac­cel­er­ated ions 40Ar6+, 86Kr13+, 132Xe20+ have close mass-to-charge ratio, which al­lows chang­ing par­ti­cles with­out chang­ing the op­er­a­tion mode of the cy­clotron. Ac­cel­er­a­tor com­plex DC-10 is ca­pa­ble of pro­duc­ing up to 2 mil­lion square me­ters of track mem­branes per the year.  
slides icon Slides WECA09 [1.603 MB]  
 
WECA11 CC-18/9M Cyclotron System target, vacuum, ion, resonance 149
 
  • A.P. Strokach, M.A. Emeljanov, A.V. Galchuck, Yu.N. Gavrish, S.V. Grigorenko, V.I. Grigoriev, M.L. Klopenkov, A.N. Kuzhlev, V.G. Mudroliubov, G.V. Muraviov, V.I. Nikishkin, V.I. Ponomarenko, Yu.I. Stogov, S.S. Tsygankov, O.L. Veresov
    NIIEFA, St. Petersburg, Russia
  
  The СС-18/9M cy­clotron sys­tem has been de­signed, man­u­fac­tured and de­liv­ered to NI­ITFA, Moscov. The sys­tem con­sists of an up­dated cy­clotron and a tar­gets sys­tem. The cy­clotron is in­tended to pro­duce pro­ton and deuteron beams with an en­ergy of 12-18/6-9 MeV and cur­rent up to 150/70 mkA. For this pur­pose, a shield­ing-type elec­tro­mag­net and a res­o­nance sys­tem have been afresh de­signed. The tar­get sys­tem for the pro­duc­tion of F-18 and C-11 ra­dionu­clides has been de­signed in NI­IEFA for the first time.  
slides icon Slides WECA11 [0.547 MB]  
 
WECA12 SEE Testing Facilities at FLNR Accelerators Complex: State of the Art and Future Plans ion, heavy-ion, target, detector 152
 
  • S. Mitrofanov, B. Gikal, G.G. Gulbekyan, I.V. Kalagin, N.F. Osipov, S.V. Paschenko, V.A. Skuratov, Yu.G. Teterev
    JINR, Dubna, Moscow Region, Russia
  • V.S. Anashin
    United Rocket and Space Corporation, Institute of Space Device Engineering, Moscow, Russia
  
  Funding: This work was sponsored by the Russian Federal Space Agency by special agreement between Institute of Space Device Engineering and Joint Institute for Nuclear Research.
The Russ­ian Space Agency (Roscos­mos) uti­lizes U400 and U400M cy­clotrons at ac­cel­er­a­tor com­plex of the Flerov Lab­o­ra­tory of Nu­clear Re­ac­tions (FLNR) of the Joint In­sti­tute for Nu­clear Re­search (JINR) in Dubna for heavy ion SEE test­ing. The ions up to the Xe and Bi with the en­ergy up to 40 AMeV are avail­able for the users. The de­tailed overview of the fa­cil­ity and the fea­tures of di­ag­nos­tic set-up used for ion beam pa­ra­me­ters eval­u­a­tion and con­trol dur­ing SEE test­ing are dis­cussed. The road map for the strate­gic de­vel­op­ment of this field in FLNR is pre­sented.
* Proceedings of RADECS 2011 PJ-8, pp.756-759, 2012.
** Proceedings of PAC09, Vancouver, BC, Canada FR5REP099, pp. 5011-5013, 2009.
 
slides icon Slides WECA12 [1.485 MB]  
 
WEPSB31 Project of Demonstration Center of the Proton Therapy at DLNP JINR proton, synchro-cyclotron, extraction, emittance 228
 
  • E. Syresin, G.A. Karamysheva, M.Y. Kazarinov, N.A. Morozov, G.V. Mytzin, N.G. Shakun
    JINR, Dubna, Moscow Region, Russia
  • J. Bokor
    STU, Bratislava, Slovak Republic
  
  JINR is one of the lead­ing pro­ton ther­apy re­search cen­ters of the in Rus­sia. The mod­ern tech­nique of 3D con­for­mal pro­ton ra­dio­ther­apy was first ef­fec­tu­ated in Rus­sia in this cen­ter, and now it is ef­fec­tively used in reg­u­lar treat­ment ses­sions. A spe­cial Medico-Tech­ni­cal Com­plex was cre­ated at JINR on the basis of the pha­sotron used for pro­ton treat­ment. About 100 pa­tients un­dergo a course of frac­tion­ated treat­ment here every year. Dur­ing last 14 years were treated by pro­ton beams about more than 1000 pa­tients . A pro­ject of the demon­stra­tion cen­ter of the pro­ton ther­apy is dis­cussed on base of a su­per­con­duct­ing 250 MeV syn­chro­cy­clotron. The su­per­con­duct­ing syn­chro­cy­clotron is planned to in­stall in­stead of pha­sotron in Med­ical Tech­ni­cal Com­plex of DLNP. The new trans­port chan­nel is de­signed for beam de­liv­ery to the JINR med­ical cabin.  
 
THCA01 Accelerator Complex Based on DC-60 Cyclotron ion, ECR, heavy-ion, operation 287
 
  • M.V. Zdorovets, V.V. Alexandrenko, I.A. Ivanov, M.V. Koloberdin, Y.K. Sambayev
    INP NNC RK, Almaty, Kazakhstan
  
  DC-60 heavy ion ac­cel­er­a­tor, put into op­er­a­tion in 2006, ac­cord­ing to its spec­i­fi­ca­tions - spec­trum, charge and en­ergy of ac­cel­er­ated ions, has the high sci­en­tific, tech­no­log­i­cal and ed­u­ca­tional po­ten­tial. The high­est pos­si­ble uni­ver­sal­ity both by spec­trum of ac­cel­er­ated ions and ac­cel­er­a­tion en­ergy and regimes was built in DC-60 heavy ion ac­cel­er­a­tor de­sign­ing. The new in­ter­dis­ci­pli­nary re­search com­plex based on cy­clotron DC-60 makes it pos­si­ble to cre­ate a highly-de­vel­oped sci­en­tific-tech­no­log­i­cal and ed­u­ca­tional en­vi­ron­ment in the new cap­i­tal of Kaza­khstan. DC-60 ac­cel­er­a­tor is a dual cy­clotron, which is ca­pa­ble of charged par­ti­cles ac­cel­er­a­tion up to ki­netic en­er­gies in MeV/nu­cleon, ex­pressed in the fol­low­ing re­la­tion: E = 60(zi/A)2, where zi - ac­cel­er­ated ion charge, A - atomic weight of ion. Re­la­tion (zi/A) in for­mula must be within the fol­low­ing lim­its: (zi/A)2 = (1/6 – 1/12), that im­pose con­straints on charge of ac­cel­er­ated ions. Thus, range of ions ac­cel­er­ated on DC-60 cy­clotron is 6Li to 132Xe, vari­a­tion of ion en­ergy is over the range 0.33 to 1.75 MeV/nu­cleon. Some re­sults of our work car­ry­ing out on the base of DC-60 cy­clotron in the field of pro­duc­tion, ac­cel­er­a­tion and trans­porta­tion of charged par­ti­cles, physics of solid state, nu­clear and atomic physics, pro­duc­tion of track mem­branes etc are given in the ar­ti­cle. Also it will be re­ported about mod­ern trends of ac­cel­er­a­tors de­vel­op­ment in Kaza­khstan.  
slides icon Slides THCA01 [1.485 MB]  
 
THPSC08 The Project of the HV Axial Injection for the DC-280 Cyclotron at the FLNR JINR ion, ECR, injection, ion-source 333
 
  • G.G. Gulbekyan, V. Bekhterev, S.L. Bogomolov, A.A. Efremov, B. Gikal, I.A. Ivanenko, I.V. Kalagin, N.Yu. Kazarinov, M.V. Khabarov, V.N. Melnikov, N.F. Osipov, S.V. Prokhorov, A. Tikhomirov
    JINR, Dubna, Moscow Region, Russia
  
  The pro­ject of the high-volt­age (HV) axial in­jec­tion for the DC-280 cy­clotron which is being cre­ated at the FLNR JINR is pre­sented. The in­jec­tion sys­tem will con­sists of a Per­ma­nent Mag­net ECR ion source and a Su­per­con­duct­ing ECR ion source, beam an­a­lyz­ing mag­nets, fo­cus­ing so­le­noids, beam chop­pers, a poly­har­monic buncher, 75 kV DC ac­cel­er­at­ing tubes, a com­mu­tat­ing elec­tro­sta­tic de­flec­tor and a spi­ral in­flec­tor. One part of the in­jec­tion sys­tem is sit­u­ated on the HV plat­form, an­other part is on the grounded yoke of the DC-280 mag­net. The in­jec­tion sys­tem will allow one to in­ject ef­fi­ciently ions of el­e­ments from He­lium to Ura­nium with the atomic mass to charge ratio in the range of 4-7.5 pro­vid­ing ac­cel­er­a­tion of ion cur­rents with in­ten­sity more than 10 pmkA.  
 
THPSC09 The Project of Beam Transportation Lines for the DC-280 Cyclotron at the FLNR JINR ion, diagnostics, vacuum, heavy-ion 336
 
  • G.G. Gulbekyan, B. Gikal, G.N. Ivanov, I.V. Kalagin, V.I. Kazacha, N.Yu. Kazarinov, M.V. Khabarov, V.N. Melnikov, N.F. Osipov, Yu.G. Teterev, A. Tikhomirov
    JINR, Dubna, Moscow Region, Russia
  
  The pro­ject of beam lines for car­ry­ing out phys­i­cal ex­per­i­ments at the DC-280 cy­clotron which is being cre­ated at the FLNR JINR is pre­sented. The com­mu­tat­ing mag­net with vari­able mag­netic field in­duc­tion up to 1.5 T gives us pos­si­bil­ity to bend ion beams in five di­rec­tions pro­vid­ing ion trans­porta­tion through beam lines to five ex­per­i­men­tal se­tups. The beam fo­cus­ing in the beam lines is pro­vided by set of quadru­pole lenses hav­ing the gra­di­ents up to 7.7 T/m. The beam lines are in­tended for the ef­fi­cient ion trans­porta­tion of el­e­ments from He­lium to Ura­nium with the atomic mass to charge ratio in the range of 4-7.5 at en­er­gies from 4 up to 8 MeV/amu. The ion beam power will reach the value about 3 kW. The water cooled cur­rent aper­ture di­aphragms will be in­stalled into all beam lines to pre­vent the tube dam­age. The beam di­ag­nos­tics con­sists of the Fara­day caps (FC), slit col­li­ma­tors, sec­tor aper­ture di­aphragms and ion­iza­tion beam pro­file mon­i­tors.  
 
THPSC10 Magnets of Injection and Extraction Systems of Cyclotron DC280 ion, emittance, sextupole, injection 339
 
  • N.Yu. Kazarinov, I.A. Ivanenko
    JINR, Dubna, Moscow Region, Russia
  
  The de­sign of two mag­nets of the cy­clotron DC280 is pre­sented. The mag­nets are the parts of in­jec­tion and ex­trac­tion sys­tems the cy­clotron. The de­sign is based on three-di­men­sional cal­cu­la­tion of the mag­net field car­ried out by using OPERA 3D pro­gram code. The in­flu­ence of the mag­netic fields non­lin­ear­i­ties on ion beam dy­nam­ics is an­a­lyzed.  
 
THPSC40 Automated Control System of Target System for PET radionuclids Production target, controls, operation, software 413
 
  • R.M. Klopenkov, P.A. Gnutov, M.L. Klopenkov, A.N. Kuzhlev, A.A. Melnikov
    NIIEFA, St. Petersburg, Russia
  • B.V. Zabrodin
    St. Petersburg State Polytechnic University, St. Petersburg, Russia
  
  An Au­to­mated Con­trol Sys­tem of tar­get sys­tem for pro­duc­tion of PET-ra­dionu­clids has been de­signed. The sys­tem al­lows on-line ob­tain­ing of the data on the sta­tus of the tar­get sys­tem and re­mote con­trol of load­ing, ir­ra­di­a­tion and evac­u­a­tion of the ac­tiv­ity to syn­the­sis mod­ules. Ac­cord­ing to al­go­rithms avail­able in the soft­ware, this sys­tem makes pos­si­ble emer­gency sit­u­a­tions to be pre­vented and in­cor­rect ac­tions of the op­er­a­tor to be blocked.  
 
THPSC41 System for Remote Replacement of Targets of the Target System for CC-Cyclotrons target, ion, vacuum, radiation 415
 
  • R.M. Klopenkov, P.A. Gnutov, M.L. Klopenkov, A.N. Kuzhlev, A.A. Melnikov
    NIIEFA, St. Petersburg, Russia
  
  An au­to­mated sys­tem for re­mote re­place­ment of tar­get de­vices of the tar­get sys­tem for cy­clotrons of the CC-se­ries has been de­signed. The sys­tem al­lows one of 5 avail­able tar­gets to be po­si­tioned under the beam of the cy­clotron at the op­er­a­tor choice. Such a tech­ni­cal so­lu­tion al­lows us to have suf­fi­ciently smaller over­all di­men­sions of the equip­ment and less time is re­quired for ser­vic­ing of water and gas tar­gets. Sep­a­rate sys­tem for tar­get re­place­ment is pro­vided for each beam ex­trac­tion, which al­lows the cy­clotron to be equipped with 10 dif­fer­ent tar­get de­vices, and makes pos­si­ble si­mul­ta­ne­ous ir­ra­di­a­tion of 2 tar­gets.  
 
THPSC47 Production of Metal Ion Beams from ECR Ion Sources by MIVOC Method ion, experiment, ion-source, ECR 432
 
  • K.I. Kuzmenkov, S.L. Bogomolov, A.E. Bondarchenko, A.A. Efremov, N. Lebedev, K.V. Lebedev, V.Ya. Lebedev, V.N. Loginov, Yu. Yazvitsky
    JINR, Dubna, Moscow Region, Russia
  • Z. Asfari, B.J.P. Gall
    IPHC, Strasbourg Cedex 2, France
  
  Funding: Work supported by Russian Foundation for Basic Research under grant number 13-02-12011
The pro­duc­tion of metal ion beams with ECR ion sources using MIVOC method is de­scribed. The method is based on the use of metal com­pounds hav­ing a high vapor pres­sure at room tem­per­a­ture: for ex­am­ple, C2B10H12, Fe(C5H5)2 and sev­eral oth­ers. In­tense ion beams of B and Fe were pro­duced at the FLNR JINR cy­clotrons using this method. The main ef­forts were went into pro­duc­tion and ac­cel­er­a­tion of 50Ti ion beam at the U-400 cy­clotron. The ex­per­i­ments on pro­duc­tion of 50Ti ion beam were per­formed at the test bench with the nat­ural and en­riched com­pounds of ti­ta­nium (CH3)5C5Ti(CH3)3. In the ex­per­i­ments at the test bench the beam cur­rents of Ti5+ - 80 mkA and Ti11+ - 70 mkA were achieved at dif­fer­ent set­tings of the source. After suc­cess­ful tests two 3 weeks runs with Ti-50 beam were per­formed at the U-400 cy­clotron for the ex­per­i­ments on spec­troscopy of super heavy el­e­ments. The in­ten­sity of the in­jected beam of 50Ti5+ was about of 50-60 mkA, dur­ing ex­per­i­ment the source have shown sta­ble op­er­a­tion. The com­pound con­sump­tion rate was de­ter­mined to be about of 2.4 mg/h, cor­re­spond­ing to 50Ti con­sump­tion of 0.52 mg/h. 		 
 
THPSC55 Improvement of the Beam Transmission in the Central Region Of Warsaw U200P Cyclotron ion, ion-source, injection, ECR 453
 
  • O. Steczkiewicz, J. Choinski, P. Gmaj
    HIL, Warsaw, Poland
  • V. Bekhterev, I.A. Ivanenko
    JINR, Dubna, Moscow Region, Russia
  
  To date, War­saw U200P cy­clotron ex­ploited a mir­ror in­flec­tor to feed heavy ions ex­tracted from ECR ion source (10 GHz, 11 kV) to the cen­tral re­gion of the cy­clotron. How­ever, in such con­fig­u­ra­tion very low trans­mis­sion was reach­able after many op­ti­miza­tions. Ad­di­tion­ally, the new ECR ion source (14,5 GHz, 14-24 kV) was in­stalled, which of­fers en­er­gies far ex­ceed­ing ca­pa­bil­i­ties of the cur­rently op­er­ated in­flec­tor and cen­tral re­gion. To avoid these ob­sta­cles, we have de­vel­oped a spi­ral in­flec­tor and re­designed cen­tral re­gion of the cy­clotron. It was a very chal­leng­ing task, bear­ing in mind lim­ited vol­ume of cen­tral re­gion in our com­pact ma­chine, to carve these el­e­ments suit­ably for de­cent ver­sa­til­ity of ion beams of­fered by War­saw cy­clotron. This pro­ject was ex­e­cuted in the col­lab­o­ra­tion with FLNR in Dubna, Rus­sia. The cy­clotron equipped with the new cen­tral re­gion works in the "con­stant orbit" regime. Here we pre­sent the re­sults of both com­pu­ta­tional sim­u­la­tions and mea­sure­ments of the beam trans­mis­sion in up­graded cen­tral re­gion.