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ppt - (FLEROVLAB) JINR

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38th meeting of the PAC for
Nuclear Physics
Results of three years of work accomplished at
FLNR under the Seven-Year Plan for the
Development of JINR 2010-2016 (Status of the
DRIBs-III project)
S. Dmitriev
FLNR’s BASIC DIRECTIONS of RESEARCH
according to the Seven-Year Plan 2010 - 2016
1. Heavy and superheavy nuclei:
пѓ�
пѓ�
пѓ�
пѓ�
synthesis and study of properties of superheavy elements;
chemistry of new elements;
fusion-fission and multi-nucleon transfer reactions;
nuclear- , mass-, & laser-spectrometry of SH nuclei.
2. Light exotic nuclei:
пѓ� properties and structure of light exotic nuclei;
пѓ� reactions with exotic nuclei.
3. Radiation effects and physical groundwork of
nanotechnology.
Project DRIBs-III (2010 – 2016)
(as it seemed in 2009)
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:
пѓ� completion of modernization of cyclotrons U400 and U400Рњ,
пѓ� creation of a new experimental hall (2600 m2),
пѓ� creation of new generation experimental set-ups,
пѓ� creation of the high-intensity universal accelerator of heavy
ions (A≤ 100, E ≤ 10 MeV ·A , I ≤ 10 pµA).
Required funds: 60,000,000 $.
According to recommendations of Nuclear Physics PACs,
and decisions of the Scientific Council and CPP
(2010 – 2012)
The DRIBs-III project should be realized at simultaneous
implementation of SHE research program.
The main achievements of the firs 3 years are:
Discovery of the
th
117 !
The Festive Naming Ceremony of the new chemical elements
114 - Flerovium and 116 - Livermorium
took place on 24 October 2012 in Moscow
IUPAC President Prof.
Kazuyuki Tatsumi
William Goldstein (Livermore),
Yuri Oganessian (JINR) and
James Roberto (Oak Ridge)
6
D.I. Mendeleev’s Periodic Table of the Elements
(2012)
Observation of the 2n-evaporation channel
opens up perspectives of chemical
investigation of the element 113
GAS PHASE CHEMISTRY WITH
ELEMENT 113
Whether the element 113 is a volatile metal?
Experiment is running. Preliminary results – it is volatile.
Target (243Am;
пЃЂ1.0 mg/cm2)
SiO2800В°C
Au - 113
2.5m
PIPS detectors
32 pairs
2 L/min
He/Ar (70/30)
9
118
6 new heaviest
elements
117
116
115
2013
114
113
112
111
110
109
108
107
106
105
104
48 new
isotopes
What is beyond 118 element?
Heaviest target: 249Cf в†’ Zmax= 118
↓
пѓ� Heavier projectiles (50Ti, 54Cr, 58Fe, 64Ni)
пѓ� Heavier targets (251Cf, 254Es -???);
пѓ� Symmetric reactions: 136Xe+136Xe,
136Xe+150Nd, 150Nd+150Nd;
пѓ� Nucleon transfer reactions (136Xe+208Pb,
238U+248Cm).
Sufficient increasing of overall experiment
efficiency is needed!
11
Studies of Exotic Nuclei in JINR
Breakdown of the N=8 shell in 10He.
S.I. Sidorchuk. A.A. Bezbakh, V. Chudoba et al., PRL 108 (2012)
P roton
detector T 2 t arget
p
8H e
10 cm
n
telescope
8H e
n
Z
10He
was produced in the 2n-transfer reaction
with the use of the secondary 8He beam and
cryogenic tritium target: 3H(8He,p)10He.
shell population scheme
1s-0d
0p1/2
0p
0p3/2
0s
np
Excitation energy E * (MeV)
Owing to specific angular and energy
correlations of 10He decay products for the first
time the spin-parity assignment was made for
the low-lying states of 10He.
The experimental data were interpreted as a
superposition of 0+, 1- and 2+ states.
The established level sequence shows that 10He
is one more drip-line nucleus demonstrating
the shell structure breakdown.
6
пЂ­
np
np
2+
2+
пЂ­
1
1пЂ­
N = 8 isotone
2
2+
18
Ne
np
2+
1
4
0
np
1пЂ­
1пЂ­
2+
+
0 ground state
16
O
14
C
12
Be
10
He
Studies of Exotic Nuclei in JINR
Isovector Soft Dipole Mode in 6Be.
A.S. Fomichev. V. Chudoba, I.A. Egorova et al., PLB 708 (2012)
Spectrum of the unbound 6Be was produced in the
charge-exchange reaction using the cryogenic
hydrogen target: 1H(6Li, 6Be)n.
The data obtained provide detailed correlation
information about the well-known 0+ ground state
and the 2+ state.
A broad structure extending from 4 to 16 MeV was
observed. It contains negative parity states populated
by the L=1 angular momentum transfer. This
continuum structure can be interpreted as a novel
phenomenon: the isovector soft dipole mode
associated with the 6Li ground state.
The DC-110 cyclotron:
Special economical zone, Dubna, Russia
Mass production of track membranes with
the thickness of п‚Ј 30 um
Ions of Ar, Kr and Xe
Ion energy of 2.5 MeV/u
Beam intensity of 1 pпЃ­A (6x1012 s-1)
Two channels with irradiation chambers
Working hours 7000 h/year
The cyclotron should be simple and reliable,
for routine use
The new accelerator has been launched in December 2012
Project DRIBs-III according to recommendations of
NPPACs, SCs and CPP (2010 – 2012)
пѓ� completion of modernization of cyclotrons U400 and U400Рњ
пѓ� sharing of physical tasks between accelerators
пѓ� Creation of SHE factory based on the high-intensity universal
DC280 cyclotron (A≤ 238, E ≤ 10 MeV ·A , I ≤ 20 pµA) in a
new separate experimental building
пѓ� creation of new generation experimental set-ups
пѓ� Total reconstruction of the U400 experimental hall, including
6 radiation safe experimental caves
пѓ� Construction of a special building for physical groundwork of
nanotechnology (1500 m2), based on IC100 and U400M.
Basic facilities and SHE-factory
U400R CYCLOTRON
stand-alone & post-accelerator
U400R (expected)
пѓ�
пѓ�
пѓ�
пѓ�
пѓ�
пѓ�
пѓ�
пѓ�
Fusion-fission;
Quasi-fission;
Nuclear spectroscopy;
New heavy isotopes;
Multi nucleon transfer reactions;
Sub-barrier fusion;
Reactions with exotic nuclei
Structure of light exotic nuclei;
Ion
Ion energy
[MeV/A]
Output
intensity
6He
2.8 п‚ё 14
108
8He
1.6 п‚ё 8
105
7Li
2-17
1Г—1014
16O
6,4 -27
1Г—1014
40Ar
1-5,1
6Г—1013
48Ca
1,6-11
1.5Г—1013
50Ti
4,1-21
6Г—1012
58Fe
1,2-7,5
6Г—1012
84Kr
0,8-3,5
2Г—1012
132Xe
0,8-3,5
3Г—1012
238U
1,5- 8
5Г—1011
U400M CYCLOTRON
stand-alone & driving accelerator
U400M
E=30 Г· 50 MeV/A
E=4.5 Г· 9 MeV/A
пѓ� Properties and structure of light
exotic nuclei;
пѓ� Astrophysics;
пѓ� Reactions with exotic nuclei;
пѓ� Light neutron-rich nuclei;
пѓ� Deep inelastic scattering;
пѓ� Producing of RIBs.
Ion
Ion energy
[MeV/A]
Output
intensity
7Li
35
6Г—1013
18O
33
1Г—1013
40Ar
40
1Г—1012
48Ca
5
6Г—1012
54Cr
5
3Г—1012
58Fe
5
3Г—1012
124Sn
5
2Г—1011
136Xe
5
4Г—1011
238U
7
2Г—1010
DC280 CYCLOTRON
stand-alone SHE-factory
DC280 (expected)
E=4Г·8 MeV/A
пѓ�Synthesis and study of properties of
superheavy elements;
пѓ�Search for new reactions for SHEsynthesis
пѓ�Chemistry of new elements;
Ion
Ion
energy
[MeV/A]
Output
intensity
7Li
4
1Г—1014
18O
8
1Г—1014
40Ar
5
6Г—1013
48Ca
5
0,6-1,2Г—1014
54Cr
5
2Г—1013
58Fe
5
1Г—1013
124Sn
5
2Г—1012
136Xe
5
1Г—1014
238U
7
5Г—1010
Manufacturing of the magnet has been started.
Instrumentation
New FLNR gas-filled separator
PAC for NP 32nd Meeting, 17-18 June 2010
“chemical”
“physical”
Reaction
Transmission
244Pu(48Ca,3n)289114
60 %
244Pu(58Fe,4n)298120
75 %
Velocity filter for asymmetric combinations
VASSILISSA-GABRIELLA
PAC for NP 31st Meeting, 25-26 January 2010
High transmission for asymmetric combinations (beams of 12C, 14N,16O, 22Ne)
Availability for symmetric combinations (136Xe + 136Xe в†’ 272Hs*)
Mass-spectrometer MASHA
PAC for NP 31st Meeting, 25-26 January 2010
Fragment-separator ACCULINNA-2
PAC for NP 32nd Meeting, 17-18 June 2010
Manufacturing has been started
GALS: Setup for resonance laser ionization
of nuclear reaction products stopped in gas
PAC for NP 35th Meeting, 26-27 January 2012
High resolution magnetic double arm
spectrometer “MAVR”
Reaction study with primary and secondary beams
Workshop on Studies of Super-Heavy Nuclei at the SHE Factory
Texas A&M University, College Station, Texas
March 12-13, 2013
Summary results
1. The Super-Heavy Element Factory will increase the overall production of superheavy nuclei by two orders of magnitude with respect to presently achieved rates.
This will enable the studies of nuclear /atomic structure of heaviest atoms and open
the door to the discoveries of new elements above Z=118 and of isotopes closer to
the predicted shell closure at N=184.
2. Enriched Isotopes from ORNL's HFIR/REDC are essential for research on superheavy nuclei enabled by the SHE Factory.
3. The joint research between the collaborating laboratories within the SHE Factory
project will result in advanced experimental capabilities. New developments include
superconducting gas filled separator with gas catcher and mass analyzer system
(ANL-TAMU) as well as new detector arrays and modern readout systems including
digital signal processing (ORNL- UTK).
4. The roadmap for joint research at JINR Dubna in the pre-SHE factory time frame
includes experiments aiming in the discovery of the heaviest isotopes of element 118
in the reaction between 48Ca and mixed-Cf targets produced at ORNL.
5. The extension of the current US-Russia collaboration (JINR, ORNL, LLNL, UTK,
ANL, TAMU, RIAR, Vanderbilt) to other laboratories was welcomed. These new
collaborating institutions include LBNL Berkeley and GSI Darmstadt (Germany).
Schedule of the SHE factory creation
Innovation projects in the
Nanotechnology Centre
• A new roll-to roll etching facility for the development of new
track-etch membranes
• Facilities for surface modification of nano-structured composite
filmy materials
• A diversified electron microscopy laboratory for performing the
studies of micro- and nano-structured materials produced using
ion beam modification methods
• A diversified laboratory for the studies of ion-induced radiation
effects in matter, including AFM, optical spectroscopy, IR Raman
spectroscopy, luminescence, and others
Nano-laboratory building
19.06.2013
Summary
Proposals on Development, Resources, and Schedule Updates
for the DRIBs–III Project
1.
2.
3.
4.
According to the Seven-Year Plan for the Development of JINR 2010-2016
approved by the Committee of Plenipotentiaries of the Governments of the
JINR Member States (CPP) in November of 2009, the DRIBs-III Project
included the following:
Modernization of the currently operating U400 and U400M accelerators
Development of new physical experimental setups (separators, etc.)
Construction of a new Experimental Hall with a total area of 2,500 m2 to carry
out experiments with beams of stable and exotic radioactive nuclei.
Development of a new high-current heavy-ion DC-200 accelerator with the
intensity of the average-mass ions (48CР°) no lower than 5в€™1013, i.e., around
10ВµA.
The Project Financing and Implementation Schedule approved in 2009 is
presented in Table 1.
Tab1e 1. The DRIBs-III Financing and Implementation Schedule approved by the CPP in November of 2009
(USD, in thousands).
Tasks performed
2010
2011
2012
2013
2014
2015
2016
1,000
1,000
1,000
2,000
2,000
3,000
3,000
Modernization of the existing heavy-ion accelerators:
complete equipment with components and
manufacture the U400R systems
2,000
installation, adjustment of systems, lauch
of the U400R accelerator
Financial support for running
experiments (7 M USD)
1,000
1,000
1,000
1,000
1,000
Construction of a new FLNR Experimental Hall: (13MUSD)
technical requirements, project
1,000
civil construction
5,000
5,000
gallery, beam lines
2,000
Development of experimental continuous-action devices and facilities: (15MUSD)
physical and chemical separators, systems
of collection and transportation of nuclear
reaction products, radiochemical
laboratory of II class, etc.
1,000
3,000
2,000
2,000
3,000
Development of a high-intensity heavy-ion accelerator
(Рђ п‚Ј 100, Р•п‚Ј 8 MeVпѓ—Рђ, I п‚і 10 pОјРђ): (22 MUSD)
technical requirements, project
1,000
manufacture
3,000
6,000
installation, beam lines, launch
Total
10,000
2,000
5,000
11,000
11,000
11,000
16,000
The total funding: USD 60 million, including USD 7 million to cover the expenses of ongoing experiments
(USD 1 million per year).
Recently obtained results at the FLNR JINR on synthesis of new superheavy
elements (SHE) are highly appreciated, and the FLNR JINR joint research in
the specified areas between the FLNR JINR physicists and their longtime
collaborators from the US, Germany, France, and Japan is acknowledged. In
the course of the project's implementation, the CPP, taking into account the
recommendations of PAC and the JINR Scientific Council, proposed:
1. to achieve the main project objectives while at the same time implement the
scientific program on synthesis and investigation of the properties of SHE
(earlier, the U400 cyclotron was planned to be shut down for 2-year-long
upgrade in August 2010);
2. to construct the world's first Superheavy Element Factory (SHE Factory) at
JINR, including:
• a new high-current heavy-ion DC-280 accelerator with the beam intensity up
to 20 рµА, А≤ 238 (earlier, a DC-200 accelerator with the beam intensity of
10 рµА, А≤ 100, was planned to be constructed);
• a new Experimental Hall with a total area of 5,500 m2 for carrying out
experiments with highly radioactive actinide targets in radiochemical
laboratories laboratories of second class by the Radiation Safety Standards.
Earlier, an Experimental Hall of third class with an area of 2,500 m2 was
planned;
3.
4.
3.
to upgrade the existing U400 and U400M accelerators to pursue world-class
research and development programs in the three key areas of the heavy-ion
physics at low and intermediate energies, in particular: synthesis of new SHE
and the investigation of the properties of the already discovered SHE (SHE
Factory) that will be carried out at the DC-280 cyclotron; nuclear physics
experiments (spectroscopy, fusion-fission of heavy and superheavy nuclei,
etc.) performed at the U400 accelerator; experiments with exotic radioactive
nuclei (6,8РќРµ, 11Li, etc.) carried out at the U400M accelerator;
to reconstruct the U400 Experimental Hall housing 6 radiation-shielded caves
with a total area of 1,500 m2;
and
to construct a new FLNR JINR Experimental Hall (total of 1,500 m2) to
conduct scientific research on the application of heavy-ion beams in
nanotechnology.
However, the above-mentioned changes do not seem possible under the
Seven-Year Plan for the Development of JINR (2010-2016) without USD 30.1
million in additional DRIBs–III Project funding. Proposals on the adjustments
to the DRIBs–III Project Financing and Implementation Schedule are
summarized in Table 2.
Table 2.DRIBs–III Project Financing and Implementation Schedule updates for the years 2010–2016.
Tasks performed
2010
2011
2012
2013
2014
2015
2016
1,500
500
1,500
1,000
500
1,500
2,000
6,000
6,000
3,500
5,000
USD, in thousands
Upgrade of the currently operating heavy-ion accelerators:
complete equipment with components and
manufacture U400R systems
2,000
installation, adjustment of systems, startup of
the U400R accelerator, and the U-400M
accelerator upgrade (superconducting ECR
ion source and cryogenic vacuum system)
Financial support for running experiments
(9,5 M USD)
1,000
1,000
1,000
1,500
1,500
Construction of a new FLNR Experimental Hall (SHE Factory) 13,8 MUSD
design works, construction
design works, construction
200
2,500
1,100
4,500
Renovation of the U400 Experimental Hall
500
800
5,500
500
Development of experimental continuous-action devices and facilities:
physical and chemical separators, systems of 500
3,000
2,000
2,000
3,000
collection and transportation of nuclear
reaction products, radiochemical laboratory
of II class, etc.
Development of high-intensity heavy-ion accelerator (Рђ п‚Ј 100, Р•п‚Ј 8.5 MeVпѓ—Рђ, Iп‚і 10 ВµAпѓ—h):
technical requirements, project
manufacture
installation, beam lines, launch
Total
3,700
Total for the 2010–2016 period: USD 90.1 million
750
250
750
3,000
750
8,000
9,500
2,000
2,000
7,500
8,350
17,550
21,500
16,500
15,000
According to the Project Financing and Implementation Schedule presented in Table 2,
the above-mentioned project updates shall be implemented in full (the ultimate goal) over
the period from 2013 through 2016.
Should difficulties arise in finding additional funds (USD 30.1 million), some of the work
will have to be postponed until 2017–2019. The high-priority tasks (the "minimum
program"), which shall be fully implemented under the JINR Seven-Year Plan (2010–
2016), shall thus include the following:
• Development of the world's first SHE Factory, launch of a new DC-280 accelerator,
construction of a new Experimental Hall and experimental setups for synthesis and
investigation of the properties of SHE
• Implementation of the scientific program on the SHE synthesis (U400 accelerator)
• Completion of works on the U-400M modernization, and the development of a new
ACCULINNA-2 separator for carrying out research on exotic radioactive nuclei
• Completion of preparatory and design works for the renovation of the U400
Experimental Hall and the modernization of the U400 accelerator to ensure the
implementation of the above-listed tasks in 2017
The proposed DRIBs–III Implementation Schedule of the “minimum program” is
presented in Table 3.
Table 3. The amended DRIBs-IIIa Project Financing and Implementation Schedule (USD, in thousands for
the period 2010-2016 (the “minimum program).
Tasks performed
2010
2011
2012
2013
2014
2015
2016
1,000
1,000
500
500
1,500
1,500
Modernization of the existing heavy-ion accelerators:
2,000
U400M (superconducting ECR ion
source, the cryogenic vacuum system)
Financial support for running
experiments (9,0/ 7,0 MUSD)
1,000
1,000
1,000
1,500
1,500
Development of a new Experimental Hall (radiochemical laboratory of second class, SHE Factory):
Design, construction works
200
2,500
1,100
4,500
5,500
(13,8 /13,0 MUSD)
Renovation of the U400R Experimental Hall
500
Project (2,25 MUSD)
700
500
250
500
3,000
3,500
3,500
8,000
2,500
Development of experimental continuous-action devices and facilities:
physical and chemical separators, systems
of collection and transportation of nuclear
reaction products, radiochemical
laboratory of II class, etc.
500
3,000
2,000
2,000
(17,5 / 15,0 MUSD)
Development of a high-intensity heavy-ion accelerator
(Рђ п‚Ј 238, Р•п‚Ј 8.5 MeVпѓ—Рђ, I п‚і 10 pОјРђ): (26,0/ 22,0 MUSD)
technical requirements, project
750
750
750
manufacture
250
3,000
8,000
installation, beam lines, startup
Total
2,000
3,700
7,500
Project Total: USD 73.75 million for the 2010–2016 period.
Funding increase amounts to USD 13.75 million.
8,350
17,450
18,500
11,250
7,000
FLNR (JINR) – 2016
SHE Factory
1000m2
Nuclear physics with stable & RI-beams
U400R
upgraded
Applied
research
IC100
Production &
studies of the
exotic nuclei
1500m2
DRIBs
DC-280 new
U200
MT25
U400M
&SC ECR
U400R - U400M
Accelerator Complex
Nano/Lab
1500m2
Thank you!
U400R. Median plane level. Second floor.
U400
U400R Schedule
U400 beam on
Hall design
Building
U400
U400R
assembling
U400R beam on
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