jinr scientific council 106 nd session, 24 september 2009, dubna

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Slide 1

JINR SCIENTIFIC COUNCIL106nd Session, 24 September 2009, Dubna

JINR SCIENTIFIC COUNCIL106nd Session, 24 September 2009, Dubna

STATUSSTATUS

of MAJOR BASIC FACILITY of MAJOR BASIC FACILITY

PROJECTS of the SEVEN-YEAR:PROJECTS of the SEVEN-YEAR:

DRIBs – III PROJECTDRIBs – III PROJECT

STATUSSTATUS

of MAJOR BASIC FACILITY of MAJOR BASIC FACILITY

PROJECTS of the SEVEN-YEAR:PROJECTS of the SEVEN-YEAR:

DRIBs – III PROJECTDRIBs – III PROJECTS.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

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Slide 2

BASIC DIRECTIONS of RESEARCHBASIC DIRECTIONS of RESEARCHBASIC DIRECTIONS of RESEARCHBASIC DIRECTIONS of RESEARCH1. Heavy andand superheavy nuclei

Synthesis and study of properties of superheavy elements

Chemistry of new elements

Fusion-fission and multi-nucleon transfer reactions

Mass-spectrometry and nuclear spectroscopy of SH nuclei

1. Heavy andand superheavy nuclei

Synthesis and study of properties of superheavy elements

Chemistry of new elements

Fusion-fission and multi-nucleon transfer reactions

Mass-spectrometry and nuclear spectroscopy of SH nuclei

2. Light exotic nuclei

Properties and structure of light exotic nuclei Properties and structure of light exotic nuclei

Reactions with exotic nucleiReactions with exotic nuclei

2. Light exotic nuclei

Properties and structure of light exotic nuclei Properties and structure of light exotic nuclei

Reactions with exotic nucleiReactions with exotic nuclei

3. Radiation effects and physical bases of nanotechnology

3. Radiation effects and physical bases of nanotechnology

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Slide 3

SOME RESULTS in STUDY of SUPERHEAVY NUCKLEISOME RESULTS in STUDY of SUPERHEAVY NUCKLEISOME RESULTS in STUDY of SUPERHEAVY NUCKLEISOME RESULTS in STUDY of SUPERHEAVY NUCKLEISynthesis of 5 new elements and 34 new superheavy isotopes Limiting role of quasi-fission

in synthesis of SH nuclei

Relativistic chemistry of SHE

Spectroscopy of SH nuclei

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Slide 4

Discovery of di-neutron inside 6He

Observation of energy structure of neutron-rich exotic nuclei 5H, 7H, 10He

Observation of sub-barrier fusion enhancement of 6He

SOME RESULTS in STUDY of EXOTIC NUCKLEISOME RESULTS in STUDY of EXOTIC NUCKLEISOME RESULTS in STUDY of EXOTIC NUCKLEISOME RESULTS in STUDY of EXOTIC NUCKLEI

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Slide 5

DRIBs-IIIDRIBs-IIIDRIBs-IIIDRIBs-III

Modernization of existing acceleratorsModernization of existing accelerators ( (UU400М 400М && UU400)400) Creation of the new experimental hallCreation of the new experimental hall (≈ 2 (≈ 26600 м00 м22)) Development and creation of next generation set-upsDevelopment and creation of next generation set-ups Creation of high current heavy ion acceleratorCreation of high current heavy ion accelerator ((A≤ 100, E ≤ 10 MeV ·A , I≥10 pµA)A≤ 100, E ≤ 10 MeV ·A , I≥10 pµA)

Modernization of existing acceleratorsModernization of existing accelerators ( (UU400М 400М && UU400)400) Creation of the new experimental hallCreation of the new experimental hall (≈ 2 (≈ 26600 м00 м22)) Development and creation of next generation set-upsDevelopment and creation of next generation set-ups Creation of high current heavy ion acceleratorCreation of high current heavy ion accelerator ((A≤ 100, E ≤ 10 MeV ·A , I≥10 pµA)A≤ 100, E ≤ 10 MeV ·A , I≥10 pµA)

2010 -2016 2010 -2016 ≈ 60 М$ ≈ 60 М$ 2010 -2016 2010 -2016 ≈ 60 М$ ≈ 60 М$

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Slide 6

U400M CYCLOTRONU400M CYCLOTRONU400M CYCLOTRONU400M CYCLOTRON

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2007 - 20092007 - 2009 2007 - 20092007 - 2009

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).

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).

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Slide 8

MODERNIZATION MODERNIZATION of the U400M CYCLOTRONof the U400M CYCLOTRON

MODERNIZATION MODERNIZATION of the U400M CYCLOTRONof the U400M CYCLOTRON

The main goals of modernization are achieved (the light The main goals of modernization are achieved (the light ion beams intensity, the quality of beams, acceleration ion beams intensity, the quality of beams, acceleration of “low” energy ions)of “low” energy ions)

The critical point becomes the operation stability (now The critical point becomes the operation stability (now is is ≈≈50%) caused by existing infrastructure50%) caused by existing infrastructure

We can not modernize it we need to create the new oneWe can not modernize it we need to create the new one

The main goals of modernization are achieved (the light The main goals of modernization are achieved (the light ion beams intensity, the quality of beams, acceleration ion beams intensity, the quality of beams, acceleration of “low” energy ions)of “low” energy ions)

The critical point becomes the operation stability (now The critical point becomes the operation stability (now is is ≈≈50%) caused by existing infrastructure50%) caused by existing infrastructure

We can not modernize it we need to create the new oneWe can not modernize it we need to create the new one

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Slide 9

U400 CYCLOTRONU400 CYCLOTRON U400 CYCLOTRONU400 CYCLOTRON

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5)5) Cyclotron average magnetic field level Cyclotron average magnetic field level from 1.8 to 0.8 Tfrom 1.8 to 0.8 T

5)5) Cyclotron average magnetic field level Cyclotron average magnetic field level from 1.8 to 0.8 Tfrom 1.8 to 0.8 T

U400 U400 U400R GOALS U400R GOALS U400 U400 U400R GOALS U400R GOALS

2)2) Ion energy variation on the target with factor 5Ion energy variation on the target with factor 52)2) Ion energy variation on the target with factor 5Ion 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 2.5 pμAup to 2.5 pμA

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 2.5 pμAup to 2.5 pμA

3)3) Energy spread on the target up to 10Energy spread on the target up to 10-3-33)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 · mradBeam emittance on the target – 10 π mm · mrad4)4) Beam emittance on the target – 10 π mm · mradBeam emittance on the target – 10 π mm · mrad

6)6) New equipmentNew equipment6)6) New equipmentNew equipment

The project is fully prepared!The project is fully prepared!

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Slide 11

T1/2= 320d

164

104/270

105/270

107/274

109/278

111/282

113/286

115/290

117/294

103/266

102/266

107/273

109/277

105/269

111/281

113/285

115/289

117/293

104/269

249Bk +48Ca

Collaboration: FLNR (Dubna) – ORNL (Oak-Ridge) –LLNL (Livermore) – IAR (Dmitrovgrad)-Vanderbilt University (Nashville)

T1/2= 320d

115/287

10.59

3 ms2

113/283

10.12

0. s1

111/279

10.37

0.17 s

109/2 57

10.33

9.7 ms

107/2 17

105/267

1.2 h

a

a

a

a

a

109/276

9.71

0.72 s

107/272

9.02

9.8 s

113/284

10.00

0.48 s

115/288

10.46

87 ms

105/268

1.2 d

111/280

9.75

3 6. s

104/268

a

a

a

a

a

243Am242Pu, 245Cm

237Np

244Pu, 248Cm249Cf

Decaychains

48Ca +

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Slide 12

293 294

290289

117

297

117

115

11.00 MeV11.27 MeV

249Bk + Ca 48

0.03 s7.0 ms

10.22 MeV0.7 s

10.48 MeV0.15 s

270269

105

266265

103103

3n4n

286

282

278

274

285

281

277

273

113

111

109

107

11 s0.84 s

286

282

278

274

285

281

277

273

113

111

109

107

9.55 MeV9.95 MeV

9.43 MeV10.13 MeV

9.14 MeV9.60 MeV

5.6 s0.04 s

8.8 s0.42 s

8.42 MeV8.65 MeV5.1 min55 s

270

274

269

105

107

7.71 MeV

8.42 MeV

7.94 MeV

6.55 MeV6.41 MeV

4.8h

5.1min

0.7h

SF5.9y27y

266265

266

103103

102

Expected decay chain of the isotopes of element 117

AA. . SobiczewskiSobiczewski 10/24.03.0910/24.03.09

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Slide 13

Basic directions Basic directions of researchof research

Basic directions Basic directions of researchof research

Heavy and superheavy nuclei

• Synthesis of superheavy elements• Chemistry of new elements• Fusion-fission and multi-nucleon

transfer reactions• Mass-spectrometry and nuclear

spectroscopy of SH nuclei

Heavy and superheavy nuclei

• Synthesis of superheavy elements• Chemistry of new elements• Fusion-fission and multi-nucleon

transfer reactions• Mass-spectrometry and nuclear

spectroscopy of SH nuclei

Light exotic nuclei

• Structure of light exotic nuclei

• Reactions with exotic nuclei

Light exotic nuclei

• Structure of light exotic nuclei

• Reactions with exotic nuclei

Next generation Next generation of experimental setupsof experimental setups

Next generation Next generation of experimental setupsof experimental setups

1. Universal gas-filled separator of 1. Universal gas-filled separator of superheavy nucleisuperheavy nuclei2. Pre-separator for radiochemical and 2. Pre-separator for radiochemical and mass-spectrometric researchesmass-spectrometric researches3. Cryogenic detector for studying chemical 3. Cryogenic detector for studying chemical properties of SHEproperties of SHE4. Gas catcher for collecting and production 4. Gas catcher for collecting and production of single-charged ionsof single-charged ions5. Wide aperture separator and spectrometer 5. Wide aperture separator and spectrometer of nucleon transfer and fission reaction of nucleon transfer and fission reaction productsproducts6. Radiochemical laboratory of II class6. Radiochemical laboratory of II class

1. Universal gas-filled separator of 1. Universal gas-filled separator of superheavy nucleisuperheavy nuclei2. Pre-separator for radiochemical and 2. Pre-separator for radiochemical and mass-spectrometric researchesmass-spectrometric researches3. Cryogenic detector for studying chemical 3. Cryogenic detector for studying chemical properties of SHEproperties of SHE4. Gas catcher for collecting and production 4. Gas catcher for collecting and production of single-charged ionsof single-charged ions5. Wide aperture separator and spectrometer 5. Wide aperture separator and spectrometer of nucleon transfer and fission reaction of nucleon transfer and fission reaction productsproducts6. Radiochemical laboratory of II class6. Radiochemical laboratory of II class

7. Separator of radioactive light exotic nuclei7. Separator of radioactive light exotic nuclei8. Spectrometer for studying nuclear 8. Spectrometer for studying nuclear reactions induced by RIBsreactions induced by RIBs

7. Separator of radioactive light exotic nuclei7. Separator of radioactive light exotic nuclei8. Spectrometer for studying nuclear 8. Spectrometer for studying nuclear reactions induced by RIBsreactions induced by RIBs

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Slide 14

Mass-spectrometer MASHA at the beam line of the Mass-spectrometer MASHA at the beam line of the cyclotron U-400Mcyclotron U-400MMass-spectrometer MASHA at the beam line of the Mass-spectrometer MASHA at the beam line of the cyclotron U-400Mcyclotron U-400M

• New beam line with low energy of the U-New beam line with low energy of the U-400M was built400M was built• Mass-spectrometer mounted at the new Mass-spectrometer mounted at the new beam line beam line • Hot catcher is readyHot catcher is ready• Focal plane detector system is readyFocal plane detector system is ready• Start of test experiments – december of Start of test experiments – december of 20092009

• New beam line with low energy of the U-New beam line with low energy of the U-400M was built400M was built• Mass-spectrometer mounted at the new Mass-spectrometer mounted at the new beam line beam line • Hot catcher is readyHot catcher is ready• Focal plane detector system is readyFocal plane detector system is ready• Start of test experiments – december of Start of test experiments – december of 20092009

STATUS of the MASS-SPECTROMETERSTATUS of the MASS-SPECTROMETERSTATUS of the MASS-SPECTROMETERSTATUS of the MASS-SPECTROMETER

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Slide 15

Heavy ionbeam

Target

Hot catcher(graphite)

1TO

12, 114 ECR

Heater

Separating foil

FIRST EXPERIMENTSFIRST EXPERIMENTS

• Mass identification ofMass identification of 112 и 114 112 и 114 elements synthesizedelements synthesized at the reactionsat the reactions

242242Pu(Pu(4848Ca,3n)Ca,3n)287287114(0.5 s) –> 114(0.5 s) –> 283283112(4 s)112(4 s)

• Mass Mass identification identification ofof 11 1133 elements synthesizedelements synthesized at the at the reactionreaction

224343Am(Am(4848Ca,3n)Ca,3n)288288115 (0.1 s) 115 (0.1 s) →→284284113 (0.5 s)113 (0.5 s)

FIRST EXPERIMENTSFIRST EXPERIMENTS

• Mass identification ofMass identification of 112 и 114 112 и 114 elements synthesizedelements synthesized at the reactionsat the reactions

242242Pu(Pu(4848Ca,3n)Ca,3n)287287114(0.5 s) –> 114(0.5 s) –> 283283112(4 s)112(4 s)

• Mass Mass identification identification ofof 11 1133 elements synthesizedelements synthesized at the at the reactionreaction

224343Am(Am(4848Ca,3n)Ca,3n)288288115 (0.1 s) 115 (0.1 s) →→284284113 (0.5 s)113 (0.5 s)

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Slide 16

Experimental facility for very heavy nuclei researchExperimental facility for very heavy nuclei researchExperimental facility for very heavy nuclei researchExperimental facility for very heavy nuclei research

Main parameters of recoil separatorMain parameters of recoil separator

Solid angle ~ 30 msrSolid angle ~ 30 msr.. Momentum acceptance – 10%.Momentum acceptance – 10%. Magnetic field – BMagnetic field – Bmaxmax=0.3 T.=0.3 T. Electric field – EElectric field – Emaxmax=10 kV/cm.=10 kV/cm. Focal plane beam diameter Focal plane beam diameter – – 88 cmcm.. Total length – 8 m.Total length – 8 m.

Wien filter

Target box

Ion beam

Gas catcher

Mass-spectrometerMASHA

Detectors

Qf1 WF Qf2D1 Q1 Q2

D2

Q3S1

D3aD3b

S2

From ECR SOURCE to GAS CATCHERFrom ECR SOURCE to GAS CATCHERFrom ECR SOURCE to GAS CATCHERFrom ECR SOURCE to GAS CATCHER

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Slide 17

““VASSILISSA” based velocity filter VASSILISSA” based velocity filter for nuclear spectroscopy (joint JINR – IN2P3 project)for nuclear spectroscopy (joint JINR – IN2P3 project)

““VASSILISSA” based velocity filter VASSILISSA” based velocity filter for nuclear spectroscopy (joint JINR – IN2P3 project)for nuclear spectroscopy (joint JINR – IN2P3 project)

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Slide 18

ACCULINNA-2

ACCULINNA

COMBAS

Acculinna−2 as ‘in−flight’ separator at U−400M cyclotron

DRIBs

GS

RF kicker operating principle:RF kicker operating principle:Beam species that have similar BBeam species that have similar B differ in TOF differ in TOF

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Slide 19STATUS of PROJECT:STATUS of PROJECT: 1) Letter of Intent (60 pages)

2) Complex calculation of ion−optical system

STATUS of PROJECT:STATUS of PROJECT: 1) Letter of Intent (60 pages) 2) Complex calculation of ion−optical

system

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Slide 20

COMBAS

Achromatic ModeSolid Angle Acceptance Ω(msr) 12Momentum Acceptance Δp/p(%) 20Factor Suppression % 50-80

Dispersion Mode (MSP)Momentum Resolution 2×10-4

Length focal plane cm 150Emax/Emin 5.2Factor Suppression % 0.1

Primary Primary beambeam

Energy primaryEnergy primaryBeam (MeV/amu)Beam (MeV/amu)

Secondary Secondary beambeam

Energy secondary Energy secondary beam (MeV/amu)beam (MeV/amu)

Intensity secondary Intensity secondary beam (pps)beam (pps)

1111BB 3333 88HeHe 2727-10-10 2x102x1044-10-1033

1111BB 3333 99LiLi 2626-10-10 4x104x1055-10-1044

1515NN 4949 1111LiLi 3737-10-10 8x108x1033-8х10-8х1022

1818OO 4848 1414BeBe 3535-10-10 5x105x1044-5х10-5х1033

2222NeNe 4444 1717BB 4040-10-10 1x101x1033-10-1022

MSP

COMBAS + MSPCOMBAS + MSPCOMBAS + MSPCOMBAS + MSP

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Slide 21

NEW GAS-FILLED SEPARATORNEW GAS-FILLED SEPARATORNEW GAS-FILLED SEPARATORNEW GAS-FILLED SEPARATOR

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Slide 23

Pole diameterPole diameter 4 m4 m

Magnetic field levelMagnetic field level 0.65÷1.15 T0.65÷1.15 T

K factorK factor 200200

WeightWeight 500 t500 t

A/Z rangeA/Z range 4÷74÷7

Injecting beam potentialInjecting beam potential Up to 100 kVUp to 100 kV

Dee voltageDee voltage 2x130 kV2x130 kV

Flat-top dee voltageFlat-top dee voltage 2x14 kV2x14 kV

Power consumptionPower consumption 250 kW250 kW

Beam turns separationBeam turns separation 10 mm10 mm

Radial beam bunch sizeRadial beam bunch size 3 mm3 mm

Efficiency of beam transferringEfficiency of beam transferring 60%60%

Total accelerating potentialTotal accelerating potential up to ~ 40 MVup to ~ 40 MV

DC200. MAIN PARAMETERSDC200. MAIN PARAMETERSDC200. MAIN PARAMETERSDC200. MAIN PARAMETERS

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Slide 25

NEW RESOURCES AND RESEARCH OPPORTUNITIESNEW RESOURCES AND RESEARCH OPPORTUNITIESNEW RESOURCES AND RESEARCH OPPORTUNITIESNEW RESOURCES AND RESEARCH OPPORTUNITIES

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Slide 27

20092009 220100105.05.0

2201101111.011.0

2201201211.011.0

2201301311.011.0

2014201416,016,0

220150153,03,0

201620163,03,0

Total gainTotal gain

Existing cyclotron U400 Existing cyclotron U400 & Gas-filled separator& Gas-filled separator::

Modernization of the Modernization of the cyclotron U400cyclotron U400: :

New FLNR experimental New FLNR experimental hallhall

New gas-filled recoil New gas-filled recoil separatorseparator

High intensity heavy ion High intensity heavy ion cyclotron DC200cyclotron DC200

Financing (M$) and gain factors for SHE experimentsFinancing (M$) and gain factors for SHE experiments

Experiment1

Experiment 2×2

Experiment 20 (10 fb)

Technical requirementsTechnical requirements

ProjectProject

Building of set of equipmentsBuilding of set of equipments

Manufacturing of systems, constructionManufacturing of systems, construction

LaunchingLaunching

Experiment2

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Slide 28

Completion of the Project DRIBs-III in the whole will not only increase by an order of magnitude the efficiency of experiments in the field of SHE synthesis, but will also allow substantially widen the spectrum of researches in the field of heavy and light exotic nuclei.

Completion of the Project DRIBs-III in the whole will not only increase by an order of magnitude the efficiency of experiments in the field of SHE synthesis, but will also allow substantially widen the spectrum of researches in the field of heavy and light exotic nuclei.

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Slide 29

THANKS FOR YOUR THANKS FOR YOUR ATTENTION!ATTENTION!

THANKS FOR YOUR THANKS FOR YOUR ATTENTION!ATTENTION!

jinr scientific council 106 nd session, 24 september 2009, dubna

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