© 2003 By Default! A Free sample background from Slide 1 JINR SCIENTIFIC COUNCIL 104 th Session, 25 September 2008, Dubna JINR SCIENTIFIC COUNCIL 104 th Session, 25 September 2008, Dubna ACTIVITY for the DRIBs PROJECT ACTIVITY for the DRIBs PROJECT S.N. DMITRIEV Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research S.N. DMITRIEV Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research

© 2003 By Default! A Free sample background from Slide 2 DRIBs complex

© 2003 By Default! A Free sample background from Slide 3 U400M CYCLOTRON

© 2003 By Default! A Free sample background from Slide 4

© 2003 By Default! A Free sample background from Slide 5 DRIBs Transport Gallery

© 2003 By Default! A Free sample background from Slide 6 U400 CYCLOTRON U400 CYCLOTRON

© 2003 By Default! A Free sample background from Slide 7 DRIB’s complex equipment Power supply for magnet 165 units Power supply for magnet 165 units ECR-source 2 ECR-source 2 Vacuum pumps 49 Vacuum pumps 49 Beam current diagnostics 35 Beam current diagnostics 35 Diagnostic station for RIB 9 Diagnostic station for RIB 9 RF systems 9 RF systems 9 Power supply for magnet 165 units Power supply for magnet 165 units ECR-source 2 ECR-source 2 Vacuum pumps 49 Vacuum pumps 49 Beam current diagnostics 35 Beam current diagnostics 35 Diagnostic station for RIB 9 Diagnostic station for RIB 9 RF systems 9 RF systems 9

© 2003 By Default! A Free sample background from Slide 8 Development of the DRIBs complex includes the modernization of: 1. U400M 2. U MT25 1. U400M 2. U MT25

© 2003 By Default! A Free sample background from Slide 9 Modernization of the U400M cyclotron 1) to increase the light ion beams intensity by the factor of 4 – 5 for producing of secondary beams, 2) to improve the quality of beams, 3) to increase the maximal energy of accelerated ions up to 100 MeV/A, 4) to improve the radiation safety conditions, 5) to accelerate “low” (6÷15 MeV/A) energy ions (move some experiments from U400 to U400M), 6) to extract the beams to the second direction. 1) to increase the light ion beams intensity by the factor of 4 – 5 for producing of secondary beams, 2) to improve the quality of beams, 3) to increase the maximal energy of accelerated ions up to 100 MeV/A, 4) to improve the radiation safety conditions, 5) to accelerate “low” (6÷15 MeV/A) energy ions (move some experiments from U400 to U400M), 6) to extract the beams to the second direction.

© 2003 By Default! A Free sample background from Slide new axial injection line; new axial injection line; new “warm” ECR ion source (DECRIS-2); new “warm” ECR ion source (DECRIS-2); new magnetic structure of the central region of U400MR; new magnetic structure of the central region of U400MR; second beam extraction system; second beam extraction system; new producing target for secondary beams; new producing target for secondary beams; new local radiation shielding; new local radiation shielding; superconducting 18-GHz primary beam ion source DECRIS-SC2 (under testing); superconducting 18-GHz primary beam ion source DECRIS-SC2 (under testing); “warm” 14-GHz secondary beam ion source (under testing). “warm” 14-GHz secondary beam ion source (under testing). new axial injection line; new axial injection line; new “warm” ECR ion source (DECRIS-2); new “warm” ECR ion source (DECRIS-2); new magnetic structure of the central region of U400MR; new magnetic structure of the central region of U400MR; second beam extraction system; second beam extraction system; new producing target for secondary beams; new producing target for secondary beams; new local radiation shielding; new local radiation shielding; superconducting 18-GHz primary beam ion source DECRIS-SC2 (under testing); superconducting 18-GHz primary beam ion source DECRIS-SC2 (under testing); “warm” 14-GHz secondary beam ion source (under testing). “warm” 14-GHz secondary beam ion source (under testing).

© 2003 By Default! A Free sample background from Slide 11 Total modernization of the target unit 1) Development design of the disposable, nonseparable, quick-detachable, target block 2) 6 He output diagnostics from the catcher 3) Creation of effective neutron traps around the target 4) Adjustment of the new 14 GHz ion source 5) Generation and acceleration of He 8 Total modernization of the target unit 1) Development design of the disposable, nonseparable, quick-detachable, target block 2) 6 He output diagnostics from the catcher 3) Creation of effective neutron traps around the target 4) Adjustment of the new 14 GHz ion source 5) Generation and acceleration of He 8

© 2003 By Default! A Free sample background from Slide 12 New axial injection line

© 2003 By Default! A Free sample background from Slide 13 New 14 GHz Ion Source

© 2003 By Default! A Free sample background from Slide 14 New Catcher

© 2003 By Default! A Free sample background from Slide 15 ION SOURCE

© 2003 By Default! A Free sample background from Slide 16 Fusion, transfer and breakup reaction mechanisms induced by halo nucleus 6 He JINR (Dubna), CSNSM (Orsay), IRS (Strasbourg), ULB (Bruxelles), Vanderbilt Univ. (USA) 6 He Er 172 Yb* 166 Yb + 6n 6 He Er 170 Yb* + 2n 6 He Er 168 Er* + 4 He 166 Er( 6 He,6n) 166 Yb & 165 Ho( 6 Li,5n) 166 Yb 166 Er( 4 He,4n) 166 Yb //PRC48(1993)319// 321 DRIBs Dec.-Jan ’08 Chan.2 U400

© 2003 By Default! A Free sample background from Slide 17 Deep sub-barrier fusion of 6 He Pb For E < 20 MeV (2n channel)  MSP-144 (focal plane) For E < 20 MeV (2n channel)  MSP-144 (focal plane)  E~  2.5MeV SETUP FOR ACTIVATION MEASUREMENTS with MSP-144 dE/dx~40keV/mm  target ~20mm  E ~  0.4MeV

© 2003 By Default! A Free sample background from Slide 18 DRIBs from 2004 to year Run 2004 year Run 2006 year Run 2006 year Run 2008 year Run 2008 year Run 2004 year Run 2004 year Run 2006 year Run 2006 year Run 2008 year Run 2008 year Run 5 3

© 2003 By Default! A Free sample background from Slide 19 Modernization of the U400M cyclotron 1) to increase the light ion beams intensity by the factor of 4 – 5 for producing of secondary beams, 2) to improve the quality of beams, 3) to increase the maximal energy of accelerated ions up to 100 MeV/A, 4) to improve the radiation safety conditions, 5) to accelerate “low” (6÷15 MeV/A) energy ions (move some experiments from U400 to U400M), 6) to extract the beams to the second direction. 1) to increase the light ion beams intensity by the factor of 4 – 5 for producing of secondary beams, 2) to improve the quality of beams, 3) to increase the maximal energy of accelerated ions up to 100 MeV/A, 4) to improve the radiation safety conditions, 5) to accelerate “low” (6÷15 MeV/A) energy ions (move some experiments from U400 to U400M), 6) to extract the beams to the second direction.

© 2003 By Default! A Free sample background from Slide 20 Low energy beam line (2007) Low energy beam line (2007)

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© 2003 By Default! A Free sample background from Slide 22 MASHAMASHA

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© 2003 By Default! A Free sample background from Slide 24 Modernization of the U400M cyclotron  The main goals of modernization are achieved (the light ion beams intensity, the quality of beams, acceleration of “low” energy ions)  The critical point becomes the operation stability (now is ≈50%) caused by existing infrastructure  We can not modernize it we need to create the new one  The main goals of modernization are achieved (the light ion beams intensity, the quality of beams, acceleration of “low” energy ions)  The critical point becomes the operation stability (now is ≈50%) caused by existing infrastructure  We can not modernize it we need to create the new one

© 2003 By Default! A Free sample background from Slide 25

© 2003 By Default! A Free sample background from Slide 26 NEW U400M WATER COOLING SYSTEM 5 modules of water cooling Water cooling module for MASHA Set-up Water cooling module for vacuum pumps and power sources

© 2003 By Default! A Free sample background from Slide 27 NEW U400M WATER COOLING SYSTEM 2 modules of water purification Module of water purification for U400M accelerator subsystem Module of water purification for U400M accelerator (itself) Water accumulation tank

© 2003 By Default! A Free sample background from Slide 28 MT-25 Microtron Plan for 2009 New equipments: New equipments: - RF generator - Power supplies - Control system - Water cooling New equipments: New equipments: - RF generator - Power supplies - Control system - Water cooling Vacuum system Vacuum system Control console Control console Commissioning Commissioning Vacuum system Vacuum system Control console Control console Commissioning Commissioning

© 2003 By Default! A Free sample background from Slide 29 5)Cyclotron average magnetic field level from 1.8 to 0.8 T 5)Cyclotron average magnetic field level from 1.8 to 0.8 T U400  U400R goals 2)Ion energy variation on the target with factor 5 1)Beam intensity of masses A ≈ 50 and energy ≈ 6 MeV/n up to 3 pμA 1)Beam intensity of masses A ≈ 50 and energy ≈ 6 MeV/n up to 3 pμA 3)Energy spread on the target up to )Beam emittance on the target – 10 π mm · mrad 6)New equipment The project is fully prepared!

© 2003 By Default! A Free sample background from Slide 30 Bottom lines   Use of accelerated light ions for producing exotic beams of light RI is proved to be correct;   Use of g -quanta for producing neutron rich fission fragments is proved to be correct;   Interest to using of RI-beams in the world is growing, and focused now mainly on the investigation of nuclear structure;   We believe, that RI-beams are of great interest for studies of reaction mechanisms and synthesis of SHE;   The real cost of the DRIBs project becomes significantly higher than the planned one due to permanently growing requirements to the radiation safety and protection; Thus:   Further development of the DRIBs project, FLNR cyclotrons and engineering infrastructure are planned;   The time schedule will be formulated in accordance with the priorities in perspective plans of the JINR (7-year program & road map).

© 2003 By Default! A Free sample background from Slide 31 Running time of the FLNR U400 and U400M cyclotrons Accelerator Running time in hours 2008 (expected) U400 U400M Total

© 2003 By Default! A Free sample background from Slide 32 Running collaborative experiments at FLNR cyclotrons   48 Ca Bk ( 249 Bk - target)   50 Ti Am ( 50 Ti – beam);   48 Ca Bk ( 249 Bk - target)   50 Ti Am ( 50 Ti – beam); Synthesis of superheavy nuclei: Synthesis of element Z=117: Synthesis of superheavy nuclei: Synthesis of element Z=117: Search for alternative methods for synthesis of SHE, search for nuclei around N=184 closed shell: Search for alternative methods for synthesis of SHE, search for nuclei around N=184 closed shell:  study of fusion mechanisms;  use of ions heavier than 48 Ca;  fusion of accelerated fission fragments,  multi nucleon transfer in damped collisions.  study of fusion mechanisms;  use of ions heavier than 48 Ca;  fusion of accelerated fission fragments,  multi nucleon transfer in damped collisions.

© 2003 By Default! A Free sample background from Slide 33 GAS PHASE CHEMISTRY WITH ELEMENTS 112 AND 114  Are elements 112 and 114 volatile metals?  How do relativistic effects influence the chemistry of E112 and of E114?  Are elements 112 and 114 volatile metals?  How do relativistic effects influence the chemistry of E112 and of E114?

© 2003 By Default! A Free sample background from Slide 34 Reported at DGFRS: Oganessian et al MeV Ds  : s SF MeV Observed in Chemistry: MeV Ds  : s SF MeV Result from the 48 Ca Pu experiment s 9.54 MeV s MeV 279 Ds 0.18 s SF(>90%) 205 MeV MeV Ds  : s SF MeV MeV Ds  : s SF 112(sgl) MeV

© 2003 By Default! A Free sample background from Slide 35

© 2003 By Default! A Free sample background from Slide Result from the 48 Ca Pu experiment Deposition Temp.: -72 °C s 9.53 MeV MeV 279 Ds 0.24 s SF s 9.54 MeV s MeV 279 Ds 0.18 s SF DGFRS Observed in chemistry

© 2003 By Default! A Free sample background from Slide 37  Nuclear spectroscopy of transuranium and transfermium isotopes at GABRIELA;  Fission of heavy and superheavy systems;  Study of subbarrier fusion and transfer reactions of halo-nuclei;  Nuclear spectroscopy of transuranium and transfermium isotopes at GABRIELA;  Fission of heavy and superheavy systems;  Study of subbarrier fusion and transfer reactions of halo-nuclei;

© 2003 By Default! A Free sample background from Slide 38  Production of new RI-beams at ACCULINNA and COMBAS fragment separators;  Production of new RI-beams in reactions with  quanta;  Study of structure of halo-nuclei;  Production of new RI-beams at ACCULINNA and COMBAS fragment separators;  Production of new RI-beams in reactions with  quanta;  Study of structure of halo-nuclei;

© 2003 By Default! A Free sample background from Slide 39 JINR SCIENTIFIC COUNCIL 104 th Session, 25 September 2008, Dubna JINR SCIENTIFIC COUNCIL 104 th Session, 25 September 2008, Dubna ACTIVITY for the DRIBs PROJECT ACTIVITY for the DRIBs PROJECT S.N. DMITRIEV Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research S.N. DMITRIEV Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research THANKS FOR YOUR ATTENTION THANKS FOR YOUR ATTENTION