© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 1
JINR SCIENTIFIC COUNCIL102nd Session, 27-28 September 2007, Dubna
JINR SCIENTIFIC COUNCIL102nd Session, 27-28 September 2007, Dubna
ACTIVITY for the DRIBs PROJECT
ACTIVITY for the DRIBs PROJECT
S.N. DMITRIEVS.N. DMITRIEV Flerov Laboratory of Nuclear Reactions, Flerov Laboratory of Nuclear Reactions,
Joint Institute for Nuclear ResearchJoint Institute for Nuclear Research
S.N. DMITRIEVS.N. DMITRIEV Flerov Laboratory of Nuclear Reactions, Flerov Laboratory of Nuclear Reactions,
Joint Institute for Nuclear ResearchJoint Institute for Nuclear Research
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 2
U400M CYCLOTRONU400M CYCLOTRONU400M CYCLOTRONU400M CYCLOTRON
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 4
DRIBs Transport GalleryDRIBs Transport GalleryDRIBs Transport GalleryDRIBs Transport Gallery
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 5
U 400 CYCLOTRONU 400 CYCLOTRON U 400 CYCLOTRONU 400 CYCLOTRON
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 6
DRIBs ProjectDRIBs Project
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 7
DRIB’s complex equipmentDRIB’s complex equipmentDRIB’s complex equipmentDRIB’s complex equipment
Power supply for magnet – 165 unitsPower supply for magnet – 165 units ECR-source - 2 ECR-source - 2 Vacuum pumps - 49 Vacuum pumps - 49 Beam current diagnostics – 35Beam current diagnostics – 35 Diagnostic station for RIB – 9Diagnostic station for RIB – 9 RF systems – 9RF systems – 9
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 8
DRIBs DRIBs from 2004 to 2006from 2004 to 2006
DRIBs DRIBs from 2004 to 2006from 2004 to 2006
2004 year Run 2004 year Run
2006 year Run2006 year Run
)(1
103)(
7
66
LiAp
ppsHeI
)(2
102)(
7
76
LiAp
ppsHeI
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 9
Program of modernization of the Program of modernization of the FLNR cyclotron complexFLNR cyclotron complex
Program of modernization of the Program of modernization of the FLNR cyclotron complexFLNR cyclotron complex
1. U400M 1. U400M 2. U400 – U400R.2. U400 – U400R. 3. MT253. MT25
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 10
Modernization Modernization of the U400M cyclotronof the U400M cyclotron
1)1) to increase the light ion beams intensity by to increase the light ion beams intensity by the factor of 4 – 5 for producing of the factor of 4 – 5 for producing of secondary beams, secondary beams,
2)2) to improve the quality of beams,to improve the quality of beams,3)3) to increase the maximal energy of to increase the maximal energy of
accelerated ions up to 100 MeV/A,accelerated ions up to 100 MeV/A,4)4) to improve the radiation safety conditions,to improve the radiation safety conditions,5)5) to accelerate “low” (6÷15 MeV/A) energy to accelerate “low” (6÷15 MeV/A) energy
ions (move some experiments from U400 to ions (move some experiments from U400 to U400M),U400M),
6)6) to extract the beams to the second to extract the beams to the second direction.direction.
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 11
February – September 2007February – September 2007 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 new magnetic structure of the central region of
U400MR;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 superconducting 18-GHz primary beam ion source
DECRIS-SC2 (under testing);DECRIS-SC2 (under testing); ““warm” 14-GHz secondary beam ion source (under warm” 14-GHz secondary beam ion source (under
testing).testing).
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 12
Total modernization of the target unitTotal modernization of the target unit
1)1) Development design of the disposable, Development design of the disposable, nonseparable, quick-detachable, target nonseparable, quick-detachable, target block.block.
2)2) 66He output diagnostics from the catcher.He output diagnostics from the catcher.3)3) Creation of effective neutron traps around Creation of effective neutron traps around
the target.the target. 4)4) Ajustment of the new 14 GHz ion source. Ajustment of the new 14 GHz ion source. 5)5) Generation and acceleration of the HeGeneration and acceleration of the He88..
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 13
New axial injection lineNew axial injection line
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 14
New 14 GHz Ion sourceNew 14 GHz Ion source
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 15
Low energy beam line Low energy beam line
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 16
New CatcherNew Catcher
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 17
Fusion, transfer and breakup reaction mechanisms induced by halo nucleus 6HeJINR (Dubna), CSNSM (Orsay), IRS (Strasbourg), ULB (Bruxelles), Vanderbilt Univ. (USA)
6He + 166Er 172Yb* 166Yb + 6n
6He + 166Er 170Yb* + 2n
6He + 166Er 168Er* + 4He
166Er(6He,6n)166Yb & 165Ho(6Li,5n)166Yb <==> 166Er(4He,4n)166Yb //PRC48(1993)319//3 2 1
DRIBsNov.-Dec. ’07Chan.2 U400
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 18
MSP-144
Focal plane
Ionizationchamber
Reactionchamber
Si-detectors
Strip-detector
Au-targets
Monitors
Monitor
Deep sub-barrier fusion of Deep sub-barrier fusion of 66He + He + 206206PbPb For E For E < < 20 MeV (20 MeV (22nn channel channel)) MSP-144 (focal plane)MSP-144 (focal plane)
E~2.5MeV
astrophysics, nucleosynthesis
SETUP FOR ACTIVATION MEASUREMENTS with MSP-144
dE/dx~40keV/mmtarget~20mm
E ~ 0.4MeV
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 19
5)5) Cyclotron average magnetic field level Cyclotron average magnetic field level from 0,8 up to 1,8 T.from 0,8 up to 1,8 T.
U400 U400 U400R U400R U400 U400 U400R U400R
2)2) Ion energy variation on the target with factor 5.Ion energy variation on the target with factor 5.
1)1) Beam intensity of masses A ≈ 50 and Beam intensity of masses A ≈ 50 and energy ≈ 6 MeV/n energy ≈ 6 MeV/n up to 3 ρμaup to 3 ρμa..
3)3) Energy spread on the target up to 10Energy spread on the target up to 10-3-3..
4)4) Beam emittance on the target – 10 π mm · mrad.Beam emittance on the target – 10 π mm · mrad.
6)6) New equipment.New equipment.
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 20
№№ JobsJobs 20072007 20082008 20092009
11 22 33 44 11 22 33 44 11 22 33 44
1.1. DrawingDrawing
2.2. Creation Creation and and equipment equipment completioncompletion
3.3. AssemblingAssembling
4.4. Equipment Equipment and beam and beam testingtesting
Plan of modernizationU400 U400 U400R U400R U400 U400 U400R U400R
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 22
JINR SCIENTIFIC COUNCIL102nd Session, 27-28 September 2007, Dubna
JINR SCIENTIFIC COUNCIL102nd Session, 27-28 September 2007, Dubna
ACTIVITY for the DRIBs PROJECT
ACTIVITY for the DRIBs PROJECT
S.N. DMITRIEVS.N. DMITRIEV Flerov Laboratory of Nuclear Reactions, Flerov Laboratory of Nuclear Reactions,
Joint Institute for Nuclear ResearchJoint Institute for Nuclear Research
S.N. DMITRIEVS.N. DMITRIEV Flerov Laboratory of Nuclear Reactions, Flerov Laboratory of Nuclear Reactions,
Joint Institute for Nuclear ResearchJoint Institute for Nuclear Research
THANKS FOR YOURATTENTION
THANKS FOR YOURATTENTION
© 2003 By Default!
A Free sample background from www.powerpointbackgrounds.com
Slide 23
Estimated results and experimental methodEstimated results and experimental methodImmediate object proposed for the primary experiments is the study of complete Immediate object proposed for the primary experiments is the study of complete fusion and breakup reaction of fusion and breakup reaction of 66He halo nuclei taking place in the interactions with He halo nuclei taking place in the interactions with medium mass targets at the energy range E=5-10 MeV/nucleun. The experiment is medium mass targets at the energy range E=5-10 MeV/nucleun. The experiment is aimed at the following tasks:aimed at the following tasks:
1. In a range1. In a range of E of Elablab=55-62 MeV the cross section will be measured for the =55-62 MeV the cross section will be measured for the 166166Er(Er(66He,6n)He,6n)166166Yb reaction. Data on 5n evaporation will be also obtained.Yb reaction. Data on 5n evaporation will be also obtained.Reaction products resulting from the Reaction products resulting from the 66He breakups will be observed too.He breakups will be observed too.2. Population2. Population probabilities will be measured for the levels of the ground-state probabilities will be measured for the levels of the ground-state rotational band in rotational band in 166166Yb. These data will be compared with calculations treating Yb. These data will be compared with calculations treating both the neutron evaporation cascade and the multiple emission of both the neutron evaporation cascade and the multiple emission of rays at the rays at the stage of the nucleus descent along the yrast line. The search of a peculiarity in the stage of the nucleus descent along the yrast line. The search of a peculiarity in the values of orbital momentum allowed for the compound nucleus formation should values of orbital momentum allowed for the compound nucleus formation should be possible. It will interesting to know if there are orbital momentum going beyond be possible. It will interesting to know if there are orbital momentum going beyond the typical the typical llcritcrit values peculiar to non-halo nuclei. values peculiar to non-halo nuclei.
3. In the case3. In the case of the breakup reactions of the breakup reactions 66He+He+166166Er=>Er=>170170Yb*+Yb*+2n2n and and 66He+He+166166Er=>Er=>168168Er*+Er*+ energy sharing among the breakup cluster (energy sharing among the breakup cluster (2n2n or or ) and recoil nucleus will be ) and recoil nucleus will be estimated from the measured yields of the evaporation residues and the energy estimated from the measured yields of the evaporation residues and the energy spectra Espectra Enn and E and E..
4. Additionally,4. Additionally, 66Li+Li+165165Ho and Ho and 66Li+Li+166166Er reactions will be studied at quite similar Er reactions will be studied at quite similar projectile energies 50-57 MeV. In the 1projectile energies 50-57 MeV. In the 1stst case the same evaporation residue case the same evaporation residue 166166Yb Yb populated in 5n channel will be investigated and in the 2populated in 5n channel will be investigated and in the 2ndnd the products of the the products of the 66Li Li breakup ending with the capture of its breakup ending with the capture of its cluster by cluster by 166166Er will be studied.Er will be studied.Beam time estimation: 4 weeks per Beam time estimation: 4 weeks per 66He and 1 week per He and 1 week per 66Li.Li.