s. sidorchuk (jinr, dubna) dubna radioacive ion beams dribsiii: status and prospects s. sidorchuk...
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DubnaRadioaciveIonBeamsDRIBsIII: STATUS and PROSPECTS
S. Sidorchuk (JINR, Dubna)
9-16 May 2013, Varna, Bulgaria1
2
Chart of Nuclides
Halo nuclei; Nucleon stability borders; New types of radioactivity; Shell structure evolution; Astrophysical applications; Lightest dripline nuclei - “playground” for testing theoretical models.
Stability island:Physical and chemical properties of the heaviest elements.
Neutron drip-line
Proton drip-line
Structure of exotic nuclei near and beyond the drip-lines
Beam Energy,MeV/u
Intensity, pps Purity, %
6Не 20 - 45 1106 998Не 15 - 30 5104 989Li 15 - 45 1106 9811Li 15 - 35 1104 9512Be 15 - 40 1106 9014Be 15 - 35 3103 8010C 30 - 40 1 104 7516C 15 - 45 3105 80
18C 15 - 40 3103 8012N 30 - 40 2x104 2513O 35 - 45 4x103 514O 30 - 45 2x105 5015O 20 - 45 5x106 60
17Ne 20 - 35 3x103 518Ne 20 - 40 2x106 50
Cryogenic tritium/deuterium target, transfer reactions:4,5H, 5-10He, 10-13Li, 12-16Be…
Shell structure evolution – 9,10He; Two-proton radioactivity, rare decays:
Optical Time Projection Chamber ; Lightest dripline nuclei - “playground” for testing theoretical models.
0
2
4
6
n p n p n p n p
shell population scheme
1
2+
1s-0d
0p1/2
0p3/2
0p
1
1
1
2+
2+
2+
1
Exc
itat
ion
ener
gy E
* (
MeV
)
18Ne 16O 14C 12Be 10He
2+
N = 8 isotone
0+ ground state
0sn p
6
What next?
EXOTIC NUCLEI: Mass range of secondary beams; Intensity of secondary beams; Beam purity;
SHE: Heaviest target: 249Cf → Zmax= 118 Heavier projectiles (50Ti, 54Cr, 58Fe, 64Ni) Heavier targets (251Cf, 254Es -???); Symmetric reactions: 136Xe+136Xe, 136Xe+150Nd,
150Nd+150Nd; Nucleon transfer reactions (136Xe+208Pb, 238U+248Cm).
Sufficient increasing of overall experiment efficiency is needed!
Project DRIBs-III (2010 – 2016)
The purpose of the project is expansion of a set of accelerated ions, both of stable, and radioactive isotopes, essential increase of intensity and quality of beams.
Realization of project DRIBs-III provides:creation of the high-intensity universal accelerator of heavy
ions (A≤ 100, E ≤ 10 MeV ·A , I ≤ 10 pµA),creation of a new experimental hall (2600 m2),completion of modernization of cyclotrons U400 and U400М, creation of new generation experimental set-ups.
Funds: 60,000,000 $.
Full-scale realization off the DRIBs-III
U400M
DRIBs
MT25
U200
IC100
Nuclear physics with stable & RI-beams
U400M &SC ECR
Nano/Lab1500m2
1500m21000m2
DC-280 new
SHE Factory
Production & study of exotic nuclei
Appliedresearch
U400Rupgraded
DC280-cyclotron – stand-alone SHE-factory
Synthesis and study of properties of superheavy elements.
Search for new reactions for SHE-synthesis.
Chemistry of new elements.
DC280 (expected)E=4÷8 MeV/A
Ion Ion energy[MeV/A]
Output intensity
7Li 4 1×1014
18O 8 1×1014
40Ar 5 6×1013
48Ca 5 0,6-1,2×1014
54Cr 5 2×1013
58Fe 5 1×1013
124Sn 5 2×1012
136Xe 5 1×1014
238U 7 5×1010
Manufacturing of DC280 has been started.
0
1
2
3
4
Targetwheel Quadrupole
lens I
Quadrupolelens II
Beam
Recoil stoppingchamber
carrier gas
to detectors
Magneticdipole
Distance in m
etres
“physical” “chemical”
Reaction Transmission
244Pu(48Ca,3n)289114 60 %
244Pu(58Fe,4n)298120 75 %
New FLNR gas-filled separator PAC for NP 32nd Meeting, 17-18 June 2010
High transmission for asymmetric combinations (beams of 12C, 14N,16O, 22Ne)Availability for symmetric combinations (136Xe + 136Xe → 272Hs*)
Velocity filter for asymmetric combinationsVASSILISSA-GABRIELLA
PAC for NP 31st Meeting, 25-26 January 2010
ACC / ACC-2FLNR JINR
RIPS / BigRIBSRIKEN
A1900MSU
FRS / SuperFRSGSI
LISE3GANIL
DW, msr 0.9 / 5.8 5.0 / 8.0 8.0 0.32 / 5.0 1.0
Dp/p, % ± 2.5 / ± 3.0 ± 3.0 / 6.0 ± 5.5 ± 2.0 / 5.0 ± 5.0
Rp/Dp 1000 / 2000 1500 / 3300 2915 8600 / 3050 2200
Br, Tm 3.2 / 3.9 5.76 / 9.0 6.0 18 / 18 3.2 - 4.3
Length, m 21 / 38 27 / 77 35 74 / 140 19(42)
E, AMeV 10÷40 / 6÷60 50÷90 / 350 110÷160 220÷1000/1500 40÷80
AdditionalRIB Filter
No / RF-kicker RF-kicker / S-form S-form & RF- kicker
S-form / Preseparator
Wien Filter
Characteristics of existing and new inflight RIB separators (DW and Dp/p are angular and momentum acceptances, Rp/Dp is the first-order
momentum resolution when 1 mm object size is assumed)
Joint Institute for Nuclear ResearchDubna
Syn thesis o f new e lem en ts;
and spec tro scopyo f heavy n uc le i;
C hem ica l and physica l p ro perties o f hea vy and superheavy nuc lid es;
A pp lied s tud ies;
S truc tu re o f ligh t nuc le i near and beyond the d rip lines;
L abora tory o f H igh E n ergy P h ysics
L abora tory o f N u clear P rob lem s
L abora tory o f T h eore tica l P h ysics
L abora tory o f N eu tron P h ysics
L ab o f In form ation Tech n o log ies
L abora tory o f R ad ia tion B io logy
F lerov L ab o f N u clear R eaction s
18
Structure of exotic nuclei near and beyond the drip-lines
Beam Energy,MeV/u
Intensity, pps Purity, %
6Не 20 - 45 1106 998Не 15 - 30 5104 989Li 15 - 45 1106 9811Li 15 - 35 1104 9512Be 15 - 40 1106 9014Be 15 - 35 3103 8010C 30 - 40 1 104 7516C 15 - 45 3105 80
18C 15 - 40 3103 8012N 30 - 40 2x104 2513O 35 - 45 4x103 514O 30 - 45 2x105 5015O 20 - 45 5x106 60
17Ne 20 - 35 3x103 518Ne 20 - 40 2x106 50
Cryogenic tritium/deuterium target, transfer reactions:4,5H, 5-10He, 10-13Li, 12-16Be…
Shell structure evolution – 9,10He; Two-proton radioactivity, rare decays:
Optical Time Projection Chamber ; Lightest dripline nuclei - “playground” for testing theoretical models.
0
2
4
6
n p n p n p n p
shell population scheme
1
2+
1s-0d
0p1/2
0p3/2
0p
1
1
1
2+
2+
2+
1
Exc
itat
ion
ener
gy E
* (
MeV
)
18Ne 16O 14C 12Be 10He
2+
N = 8 isotone
0+ ground state
0sn p
45
Fe
CCD