Bertram Blank, CEN Bordeaux-Gradignan

• DESIR: facility layout

• DESIR: scientific objectives

• BESTIOL

• LUMIERE

• DETRAP

• Transfer beam lines

• Context BARC/TIFR – DESIR: transfer beam lines

DESIR at SPIRAL2Désintégration, Excitation et Stockage des Ions Radioactifs

Decay, excitation and storage of radioactive beams

BESTIOL: BEta decay STudies at the SPIRAL2 IsOL facility

LUMIERE:Laser Utilization for Measurement and Ionization of Exotic Radioactive Elements

DETRAP:DESIR Trapping facilites

DESIR in three parts…

high-precision measurements of 0+-0+ and mirror decays: quark mixing 21Na, 23Mg, 31S, 39Ca, 66As, 70Br

-decay studies of neutron-rich and neutron-deficient nuclei

-> lifetime and decay spectroscopy: magic numbers and astrophysics 81Cu, 103-106Y, 81Cu, 83Zn, 86Ga, 87Ge, 88As, 92Se,100Kr,130Ag,139Sb,142Te

-> delayed charged-particle correlations (2p emission): pairing in nuclei

22Al, 23Si, 26P, 27S, 31Ar, 35Ca, 39Ti

-> 12C cluster emission: 112,114Ba: from decay to fission

Gamow-Teller strength distribution: shape coexistence, deformation

78-80Cu, 80-82Zn, 83-85Ga, 93-100Kr, 98,99,101In, 101Sn, 97-99Cd, 130-132In, 129-132Cd, 130Ag

Neutron emission probabilities Pn,2n: reactor physics

b-decay properties of neutron rich nuclei: reactor decay heat

BEta decay STudies at the SPIRAL2 IsOL facility

M.J.G. Borge, B. Blank et al., CSIC Madrid, CENBG

The BESTIOL facility

Future measurements at DESIR

• Measurements of ft for heaviest 0+ - 0+ decays• Most significant test of nuclear corrections• Test CVC over largest range possible

2011

Collinear Laser spectroscopy - spins - magnetic & quadrupole moments - change of charge radii N~Z = 28 (48-55Mn, 52-58Fe), 40 (A<89Zr, 88-101Sr, 89-103Y ), 50 (95-102Ag, 100-110Sn), N=82 (78-84Ge, 80-85Ga), N=104 (179-182Au)

-NMR spectroscopy and -delayed spectroscopy of polarized beams - spins - magnetic & quadrupole moments

Z=50, N=82: 132Sn region: 127-133In

purification by laser ionisation: CRIS method

F. Le Blanc, G. Neyens, P. Campbell et al., IPN Orsay, IKS Leuven, Univ. Manchester

Laser Utilization for Measurement and Ionization of Exotic Radioactive Elements

The LUMIERE facility

Laser spectroscopy in the 100Sn region

100Sn

• charge radii and moments for the most exotic isotopes

M. Bissel et al.

CRIS type beam line

multi-reflection TOF spectrometer for beam purification

Penning trap for mass measurements

− Binding energy of N~Z nuclei:

94,95,96Cd, 100Sn from S3

− Masses of A~100 nuclei: 97-100Kr, 99-102Rb, 101,102Sr, 102,103Y

− superallowed and mirror -decay Q values: 66As, 70Br, 78Nb, 82Tc,… 21Na, 23Mg, 25Al, 27Si, 29P, 31S, 35Ar, 37K, 39Ca, 41Sc

− Masses of r-process nuclei: 70,81Cu, 82Zn,100Kr, 130Ag,130-132Cd,131-133In

− Masses of transactinide isotopes with S3: Z~104, 106

MLL trap commissioning at Garching

P. Thirolf et al., LMU Munich

DETRAP: Mass measurements with the MLL trap

Measuring the heaviest masses

257Rf

• linking the super-heavy decay chains with direct mass measurements• testing the mass models for super-heavy elements• extrapolating into the unknown region

253No

P. Thirolf et al.

88-101,102SrA<89Zr

80-85,86Ga, 78-84,86-87Ge, 88As

N=Z line

179-182Au

Collinear laser spectroscopy -delayed spectroscopy of laser-polarized beams

8He

8He, 19Ne, 21Na, 23Mg, 25Al,27Si, 29P, 31S, 35Ar, 37K, 39Ca, 41Sc

- angular correlation: LPCtrap

90-92Se93-97-100Kr

138,139Sb,139-142Te94,95Ag, 96,97-99Cd

257Rf

Mass measurements: MLLTrap

66As, 70Br

127-133In129-130Ag, 130-132Cd

(Trap-assisted) -decay, TAS

98,99,101In,100,101Sn

78,79,80,81Cu, 80,81,82,83Zn

89-102,103-106Y

22Al, 23Si, 26P, 27S, 31Ar, 35Ca, 39Ti

56,58Zn

112,114Ba

RIBs from:RIBs from:- Fragmentation (S1)Fragmentation (S1)- n-induced fission (S2)n-induced fission (S2)- light particle transfer (S2)light particle transfer (S2)- fusion-evaporation (S3) fusion-evaporation (S3)

-delayed charge part. emission

DESIR physics cases: LOIs for DESIR

Possible interests from VECC

21 LOI’s for experiments at DESIR

DESIR

Low-energy beams from:S1, S2, S3 wide range of different isotopes state-of-the-art equipment

S3Productionbuilding

SPIRAL2 (S2)

GANIL – SPIRAL1 (S1)

Beam delivery to DESIR

TONNERRE

Silicon Cube

TETRA

LPCTrap

N -TOF detector

MLLTrapPIPERADE

+TAGS

BELEN

LUMIERE

BEDO

Identificationstation

Possible DESIR hall layout

DESIR

S3SP2 LINAC

Productionbuilding

Level 0: Hall (1500 m2)

Level -1: technical rooms (550 m2)

GANIL

DESIR beam lines: BARC-TIFR collaboration

Transfer beam lines

beam emittance: up to 20 .mm.mradbeam energy: 10 keV < E < 60keVlength of beam lines: ~140 m

• Design des lignes : optics, diagnostics, control, pumping system, safety and security (IPNO, CENBG, CSNSM, GANIL, BARC)• Construction and tests of a prototype section (IPNO, CENBG, GANIL, BARC)• Construction mechanical parts (BARC, IPNO, CENBG)• Installation at GANIL (GANIL, BARC, IPNO, CENBG)• Commissioning (GANIL, CENBG, BARC)• Control system programming with EPICS (?)

December 2009: first discussion with S.K. Gupta et al. March 2010: signature LIA between France (CNRS, CEA, GANIL) and India (BARC + TIFR) October 2010: First LIA meeting at GANIL: BARC/TIFR contribution to DESIR beams lines

Collaboration BARC/TIFR – SPIRAL2/DESIR

Cost estimate: Total : ~3822 k€ BARC contribution : 826 k€

optical elements, beam pipes,support structures

adaptation point of SPIRAL2 to adaptation point DESIR

RMSx,y=3mm, x,y RMS=20.mm.mrad, E/E=0.004pm, E=60kV, M=122 (ex.: 122Sn1+)

Production adaptation DESIR adaptation

L. Perrot et al., IPN Orsay

Transfer lines optics calculations: S2

Collaboration BARC/TIFR – SPIRAL2/DESIR

BARC/TIFR proposal (S.K. Gupta et al.):

1. Electrostatic steerers &  quadrupole triplets  ~ 40

2. Electrostatic benders         7

3. Two / three way switchyards               6

4. Support structure for above components & 

140 m of beam lines tubes

DESIR:• exciting physics opportunities:

• Laser spectroscopy

• Decay studies

• Trap (assisted) measurement

• large variety of beams due to different production schemes

• state of the art equipment… possibilities for equipemnt from India

• large international collaboration

• DESIR letter of intent (Oct. 2006): 97 scientists

• DESIR technical design report (Jan. 2010): 111 scientists

• DESIR related LOIs for SPIRAL2 (Jan. 2011): 132 scientists

• collaboration with and contribution from BARC/TIFR, VECC and others

is must welcome

The DESIR Collaboration

France50%

Spain9%

Belgium3%

Bulgaria1%

Serbia4%

Netherlands3%

India2% Hungary

3%

Finland4%

Germany6%

U.K.8%

Romania4%

Russia1%

Switzerland2%

• ~120 scientists and engineers • ~35 different institutions • ~15 countries

DESIR collaboration

from drawings to reality…

• Completed end of 2010• Test with high intensity beams 2011• Adaptation to nuclear environment • Interfacing with HRS

SHIRaC cooler and buncher

G. Ban et al., LPC Caen

The high-resolution separator HRS

Final design of the HRSwhich includes: mecanical contraints radioprotection considerations optical needs

Resolution M/M ≈ 30000

Beam envelope in X: Beam envelope in Y:

T. Kurtukian Nieto et al., CENBG

S. Grévy, M. Gerbaux, D. Lunney et al., CENBG, CSNSM

not for mass measurements beam purification for trap-assisted spectroscopy

− high-precision measurements− ultra-pure samples - spectroscopy

TAS neutron arrays

Si Cube

Double Penning trap PIPERADE

Ft = ft (1 + R’ ) (1 – c + NS ) =

K2

F2V Mg (1 + R)

2

F2V

Mg

Kft

2

GT2A

Mg+

T1/2

QEC

BR

0+

0+

• gv = g * Vud

• verify conserved vector current (CVC) hypothesis

Super-allowed 0+-0+ Fermi decays

Pl. Sc.

DSSSD

µCPBeam

E. Liénard et al., LPC Caen

cooling & bunchingin a RFQ

trapping & decay measurement

- angular correlation measurement in a Paul trap:

-> exotic currents in the weak interaction: 6He, 8He , 19Ne , 35Ar

-> mirror decay studies: 21Na,23Mg,25Al,27Si,29P,31S,35Ar,37K,39Ca,41Sc

e+

e

nucleus

LPCTrap setup at GANIL/SPIRAL

µCP

DETRAP: Fundamental interactions at the LPCTrap

Precise measurements of angle

• within the SM

x : Fermi fraction; : GT/F mixing ratio

• angular correlation

a = -1/3

X. Fléchard et al., LPC Caen

6He

Future measurements: 8He , 19Ne , 35Ar

RFQ & HRS

DESIR: a low-energy facility for GANIL

http://www.cenbg.in2p3.fr/desir

S1S2

Projectile or targetfragmentation at95 MeV/A

main interest:very neutron- and proton-rich light nuclei1+ n+

SPIRAL1 beams

C

Source

UCx2000°C

diffusion / effusiondeuterons40 MeV neutrons

1+ n+

C

Source

UCx2000°C

diffusion / effusiondeuterons40 MeV neutrons

1+ n+

Fission, fusionevaporation, DIC

main interest:- fission products- medium-mass proton-rich nuclei

UCx2H

IS

UCx ISHI

n

2HTarget

2HIS

n

Target IS

Converter

e.g. 36Ar @ 20 MeV/A

SPIRAL2 beams

LISOL

Fusion-evaporationreactions at CoulombBarrier, DIC

main interest:- very heavy nuclei- N=Z nuclei- very short-lived isotopes- refractory elements

S3 beams

adaptation point of LIRAT (-1.75m ) to adaptation point DESIR (+1.5m).

RMSx,y=3mm, x,y RMS=20.mm.mrad, E/E=0.004pm, E=60kV, M=122 (ex.: 122Sn1+)

LIRAT adaptation

DESIR adaptation

Transfer lines optics calculations: S1

L. Perrot et al., IPN Orsay

adaptation point of S3 (-8.5m ) to adaptation point DESIR (+1.5m).

RMSx,y=3mm, x,y RMS=20.mm.mrad, E/E=0.004pm, E=60kV, M=122 (ex.: 122Sn1+)

S3 adaptation DESIR adaptation

L. Perrot et al., IPN Orsay

Transfer lines optics calculations: S3

EQUIPEX Funding request

Phase 1 (July 2012-June 2015): investment costsPhase 1 (July 2012-June 2015): investment costs

Work packagesEquipment cost (k€)

Management cost (k€)

Total (k€)

WP0: Project coordination 0 82.5 82.5

WP1: Buildings 7415.7 0 7415.7

WP2: Beam lines 5460 17.2 5477.2

WP3: Identification station 203.1 10 213.1

WP4: General purpose Ion buncher 390 90.2 480.2

WP5: User facilities 353.1 61.8 414.9

WP6: Pluridisciplinary and industrial prospective

5 17.1 22.1

Total (Phase1) 13826.8 278.8 14105.6

Phase 2 (July 2015 - December 2019): running costsPhase 2 (July 2015 - December 2019): running costs

Work packagesOperation cost (k€)

Management cost (k€)

Total (k€)

WP0: Project coordination 0 93 96.7

WP1: Buildings 542.6 0 564.3

WP2: Beam lines 225 0 234

WP3: Identification station 9 0 9.4

WP4: General purpose Ion buncher 18 0 18.7

WP5: User facilities 162 1.2 169.7

WP6: Pluridisciplinary and industrial prospective

5 11.4 17.0

Total (Phase2) 961.6 105.6 1109.8

EQUIPEX Funding request

answer in January 2012….