nuclear physics studies at...
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GOVERNMENT OF ROMANIA Structural Instruments2007-2013
Sectoral Operational Programme „Increase of Economic Competitiveness”
“Investments for Your Future”
Extreme Light Infrastructure – Nuclear Physics (ELI-NP) Project co-financed by the European Regional Development Fund
Nuclear Physics Studies at ELI-NP
SDANCA15, SofiaOct. 08th-10th, 2015
EUROPEAN UNION
Dimiter L. Balabanski
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Extreme Light Infrastructure –Nuclear Physics
Mission: Nuclear Physics studies with high-intensity lasers and brilliant γ beams
2
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ELI Road Map
W. Sandner, ELI DC08.10.2015 3/30D.L. Balabanski, Sofia
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June 7th, 2013
08.10.2015 4 /30D.L. Balabanski, Sofia
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08.10.2015 5 /30
current view
Buildings – one contractor, 33000 m2 total
D.L. Balabanski, Sofia
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ELI–NP Building Structure
Anti–vibration platform
±1 µm @ < 10 Hz
A
A
A – A
Platform supported on dampers
anti–vibrationmounts
basement
acceleratorbays
laserrooms
08.10.2015 D.L. Balabanski, Sofia 6 /30
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Extreme Light Infrastructure (ELI)
Gerard Mourou 1985: Chirped Pulse Amplification (CPA)
I – NP
Strickland, Mourou, Opt. Commun. 56, 219 (1985)
08.10.2015 7/30D.L. Balabanski, Sofia
1023 W/cm2
109 W ~ powerof an nuclear reactor on 1 cm2
1026 W ~ Sun’stotal poweron 1 cm2
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ELI–NP HPLS
2 x 0.1 PW 10 Hz2 x 1 PW 1 Hz2 x 10 PW 0.1 Hz
Provided by THALES – France and THALES - Romania
2 HPLS up to 10 PW – 6 output lines
at present the most powerful lasers are 1 PW,e.g. CETAL at Magurele (commissioned in 2015)
08.10.2015 8 /30D.L. Balabanski, Sofia
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08.10.2015 9 /30D.L. Balabanski, Sofia
Electrons and ions accelerated at solid state densities 1024e cm-3 never reached before
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Nuclear isomer spectroscopy
90Zr(p,n)90Nb experiment of Florin Negoita @ LULI
08.10.2015 10 /30D.L. Balabanski, Sofia
2cm
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γ-ray spectra
courtesy Florin Negoita08.10.2015 11 /30
D.L. Balabanski, Sofia
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Laser-induced nuclear studies
FL + FL → <AZ> ≈ 192Re
08.10.2015 12 /30D.L. Balabanski, Sofia
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E1 Interaction Chamber (under construction)
Shape: Rectangular Material: aluminium Volume: 3 × 4 × 2 (=24) m3
Vacuum: 10-6 mbar (empty chamber) Pump-down to
5x10-6 mbar: 45 min. Multiple flanges and ports Isolation of optical table Removable roof and
side flanges
Access on top for target exchange system Internal crane for heavy equipment (mirrors) manipulation Door for access inside through a cleanroom attached to the chamber
(not shown)
Focal length for all parabolas: 1500 mm
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In-flight separator for the ELI-NP laser-driven studies
concept proposed by H. Geissel (GSI/U Giessen)for separation of nuclei of interest from all otheraccelerated particles and reaction products
Measuring basic properties of N~126 nuclei: masseslifetimesdecay modes
08.10.2015 D.L. Balabanski, Sofia 14/30
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ELI-NP Gamma Beam System (GBS)
Laser Compton backscattering (LCB)Narrow bandwidth (≤0.3%) gamma-beams up to 19.5 MeV
~ 4γ2·EL
08.10.2015 15 /30D.L. Balabanski, Sofia
Strong forward focusing
( )L
Lee
Le E
mcEa
E ⋅+++
+⋅=
220
2
2
41
cos12 γθγ
θγγ
γ
1995 2000 2005 2010 2015 2020 year
LNBLPLEIADES
HIGS
T-REX
MEGA-rayELI–NP
Brilliance
ph/(m
m2 ・
mra
d2 ・s・
0.1%
bw)
1013
1015
1017
1019
1021
year
PLEIADES++
++
+
T-REX
HIGS
MEGA-ray
ELI–NP
Bandwidth
Dynamitron
0.0001
0.001
0.01
0.1
1
bw
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Gamma Beam System – Layout
e– RF LINACLow Energy
300 MeV
Interaction LaserLow Energy
Photo–gun Laser
Interaction PointLow Energy
Photogunmulti-bunch
e– beam dump
γ beam coll&diag
e– beam dump
Low-Energy Stage: γ rays up to 3.5 MeV
ControlRoom
RacksRoom
RacksRoom
High-Energy Stage: γ rays up to 19.5 MeV
Interaction PointHigh Energy
e– beam dump
γ beam coll&diag
e– RF LINACHigh Energy
720 MeV
ControlRoom
Interaction LaserHigh Energy
Master clock synchronization @ < 0.5 ps
08.10.2015 D.L. Balabanski, Sofia 16 /30
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The Electron LINAC
Factory Acceptance Tests – C–Band structure + Modulator
08.10.2015 D.L. Balabanski, Sofia 17 /30
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Photonuclear Reactions
gs
γ´γ
Separationthreshold
AX
A´Y β
Nuclear Resonance Fluorescence (NRF)PhotoactivationPhotodesintegrationPhotofission
β
Absorption
(-activation)
γ´
~ 8 MeV
08.10.2015 18 /30D.L. Balabanski, Sofia
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Nuclear Photonics
γ
E1 strength distribution
NRF
Nuclear structure• Modes of excitation below the GDRImpact on nucleosynthesis• Gamow window for photo–induced reactions in explosive stellar eventsUnderstanding exotic nuclei• E1 strength will be shifted to lower energies in neutron rich system
08.10.2015D.L. Balabanski, Sofia
19 /30
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γ-ray spectroscopy
ELIADE array
20 /30
delivery of 4 Tigress-type Clovers and electronics is underway
08.10.2015
Calin A. Ur
D.L. Balabanski, Sofia
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Physics above the neutron threshold
• Studies of GDR and PDR decay• Studies of spin-flip M1 resonances• (γ, n) cross section measurements, e.g.
p process related measurements: – the 138La(γ,n) 137La reaction, – the 180mTa(γ,n)179Ta reaction.
Instrumentation:(i) LaBr3(Ce) array, (ii) Fast-neutron detector array(iii) NE213 liquid scintillator array
21 /30D.L. Balabanski, Sofia
30 3He, 15 LaBr3 , 15 CeBr3, 20 NE213 detectors and electronics
08.10.2015
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Nuclear Astrophysics
• Molecular states and symmetries in light nuclei• The 16O(γ,α)12C reaction• The 24Mg(γ,α)20Ne reaction• The 22Ne(γ,α)18O reaction • The 19F(γ,p)18O reaction • The 21Ne(γ,α)17O reaction
Instrumentation:(i) Large-area Si DSSD array, (ii) eTPC(iii) Bubble-chamber detector
Day One experiment:The 7Li cosmological problem
ELI-NP will be the ideal cite to study the 7Li(γ, α)3H reaction
22 /30D.L. Balabanski, Sofia
tender for 20 DSSD Si detectors is open
08.10.2015
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Photofission
1. Studies in the 2nd and 3rd minimum of the fission barrier: transmission resonances
2. Rare fission modes: ternary fission3. Structure of neutron-rich nuclei: the rare-earth
neutron-rich deformed region
tenders for 5 BICs, 8 Si DSSD, THGEM array, electronics and support infrastructure are open or in preparation
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Studies of the 2nd and 3rd minimum
schematical description of the occurrence of transmission resonances
P.G. Thirolf et al., EPJ Web of Conferences 38, 08001 (2012) 08.10.2015 D.L. Balabanski, Sofia 24 /30
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ALTO, ARIEL, etc.
Laser Compton
back-scattering
ELI-NP
γ–beam spectrum at the IP (without collimator)
~ 1011 γ/s
08.10.2015 25 /30D.L. Balabanski, Sofia
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08.10.2015 D.L. Balabanski, Sofia 26 /30
Fragment Yields at the IGISOL-4 facility at JYFL
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ELI-NP Cryogenic Stopping Cell
γ beam
technical design at GSI, Darmstadt
50% efficiency, 5 ms extraction timeat a rate of ~ 107 ions/s
He gas @ 70 Kpressure 300 mb and 10 mb> 100 V/sm DC fieldRF carpet
08.10.2015 D.L. Balabanski, Sofia 27 /30
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Next phases of ELI-NP
08.10.2015 D.L. Balabanski, Sofia 28 /30
2018-2020beyond 2020
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Human Resources
Attracting the best
competencies:
• public announcements
• international recruitment
• head–hunting formanagement positions
• junior researchersspecializing in a unique andtop-level field of research
• PhD students will benefit ofa very high specialization with enormous possibilities 0
50
100
150
200
250
2011 2012 2013 2014 2015 2016 2017 20181
1 Head of Research Activities (5)
Project integration
and execution
setup
Phase A Phase B Phase C
Junior researchers (107)
Senior researchers (20)
PhD students (50)
Technical Staff –Higher education (18)
Technical Staff (18)
Phase D Phase E Phase F
Today
http://www.eli-np.ro/jobs.php08.10.2015 29 /30D.L. Balabanski, Sofia
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Summary
• The laser-driven and gamma-beam science program at ELI-NP address key problems of present-day research.
• ELI-NP provides beyond-state-of-the-art gamma beams in terms of intensity, monochromaticity and polarizability, as well as intense laser pulses at much higher frequencies compared to existing facilities, which define experiments that cannot be done anywhere else.
• The facility will push ahead laser-driven research and photonuclear physics and their applications.
D.L. Balabanski, Sofia 30 /3008.10.2015
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ELI-NP Team, March 5, 2013
Thank you!