1. DESIR at SPIRAL2 Désintégration, Excitation et Stockage des Ions Radioactifs Decay, excitation and storage of radioactive beams
DESIR: facility layout
DESIR: scientific objectives
BESTIOL
LUMIERE
DETRAP
Transfer beam lines
Context BARC/TIFR – DESIR: transfer beam lines
Bertram Blank, CEN Bordeaux-Gradignan

2. DESIR in three parts… DETRAP: BESTIOL: LUMIERE:
BEta decay STudies at the SPIRAL2 IsOL facility
LUMIERE:
Laser Utilization for Measurement and Ionization of Exotic Radioactive Elements
DETRAP:
DESIR Trapping facilites

3. BEta decay STudies at the SPIRAL2 IsOL facility
The BESTIOL facility
BEta decay STudies at the SPIRAL2 IsOL facility
M.J.G. Borge, B. Blank et al., CSIC Madrid, CENBG
high-precision measurements of and mirror b decays: quark mixing
21Na, 23Mg, 31S, 39Ca, 66As, 70Br
b-decay studies of neutron-rich and neutron-deficient nuclei
-> lifetime and decay spectroscopy: magic numbers and astrophysics
81Cu, Y, 81Cu, 83Zn, 86Ga, 87Ge, 88As, 92Se,100Kr,130Ag,139Sb,142Te
-> delayed charged-particle correlations (b2p emission): pairing in nuclei
22Al, 23Si, 26P, 27S, 31Ar, 35Ca, 39Ti
-> 12C cluster emission: 112,114Ba: from a decay to fission
Gamow-Teller strength distribution: shape coexistence, deformation
78-80Cu, 80-82Zn, 83-85Ga, Kr, 98,99,101In, 101Sn, Cd, In, Cd, 130Ag
Neutron emission probabilities Pn,2n: reactor physics
b-decay properties of neutron rich nuclei: reactor decay heat

4. Future measurements at DESIR
2011
Measurements of ft for heaviest
decays
Most significant test of
nuclear corrections
Test CVC over largest range possible

5. The LUMIERE facility Collinear Laser spectroscopy - spins
Laser Utilization for Measurement and Ionization of Exotic Radioactive Elements
F. Le Blanc, G. Neyens, P. Campbell et al., IPN Orsay, IKS Leuven, Univ. Manchester
Collinear Laser spectroscopy
- spins
- magnetic & quadrupole moments
- change of charge radii
N~Z = 28 (48-55Mn, 52-58Fe), 40 (A<89Zr, Sr, Y ), 50 (95-102Ag, Sn),
N=82 (78-84Ge, 80-85Ga), N=104 ( Au)
b-NMR spectroscopy and b-delayed spectroscopy of polarized beams
Z=50, N=82: 132Sn region: In
purification by laser ionisation: CRIS method

6. Laser spectroscopy in the 100Sn region
CRIS type beam line
100Sn
M. Bissel et al.
charge radii and moments for the most exotic isotopes

7. DETRAP: Mass measurements with the MLL trap
P. Thirolf et al., LMU Munich
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, Rb, 101,102Sr, 102,103Y
superallowed and mirror b-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, Cd, In
Masses of transactinide isotopes with S3:
Z~104, 106
MLL trap commissioning at Garching

8. Measuring the heaviest masses
257Rf
253No
linking the super-heavy a decay chains with direct mass measurements
testing the mass models for super-heavy elements
extrapolating into the unknown region
P. Thirolf et al.

9. DESIR physics cases: LOIs for DESIR
Collinear laser spectroscopy
b-delayed g spectroscopy of laser-polarized beams
257Rf
b-n angular correlation: LPCtrap
Mass measurements: MLLTrap Au
b-delayed charge part. emission
21 LOI’s for
experiments
at DESIR
(Trap-assisted) b-decay, TAS
N=Z line
112,114Ba
98,99,101In,100,101Sn
138,139Sb, Te
94,95Ag, 96,97-99Cd In
Ag, Cd
RIBs from:
Fragmentation (S1)
n-induced fission (S2)
light particle transfer (S2)
fusion-evaporation (S3)
89-102, Y
A<89Zr
66As, 70Br
88-101,102Sr Kr
56,58Zn
90-92Se
80-85,86Ga, 78-84,86-87Ge, 88As
78,79,80,81Cu, 80,81,82,83Zn
8He, 19Ne, 21Na, 23Mg, 25Al,27Si, 29P, 31S, 35Ar, 37K, 39Ca, 41Sc
22Al, 23Si, 26P, 27S, 31Ar, 35Ca, 39Ti
8He
Possible interests from VECC

10. Beam delivery to DESIR GANIL – SPIRAL1 (S1) DESIR S3 Production
building
SPIRAL2 (S2) S3
Low-energy beams from:
S1, S2, S3
wide range of different isotopes
state-of-the-art equipment

11. Possible DESIR hall layout
N -TOF detector
PIPERADE +
TAGS
LPCTrap
MLLTrap
TETRA
Silicon Cube
BEDO
LUMIERE
TONNERRE
BELEN
Identification
station

12. DESIR beam lines: BARC-TIFR collaboration
SP2 LINAC
DESIR
GANIL
Production
building
Level 0: Hall (1500 m2)
Level -1: technical rooms (550 m2)
Transfer beam lines
beam emittance: up to 20 p.mm.mrad
beam energy: 10 keV < E < 60keV
length of beam lines: ~140 m

13. Collaboration BARC/TIFR – SPIRAL2/DESIR
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
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 (?)
Cost estimate:
Total : ~3822 k€
BARC contribution : k€
optical elements, beam pipes,
support structures 13

14. Transfer lines optics calculations: S2
adaptation point of SPIRAL2 to adaptation point DESIR
RMSx,y=3mm, ex,y RMS=20p.mm.mrad, DE/E=0.004pm, E=60kV, M=122 (ex.: 122Sn1+)
Production adaptation
DESIR adaptation
L. Perrot et al., IPN Orsay

15. Collaboration BARC/TIFR – SPIRAL2/DESIR
BARC/TIFR proposal (S.K. Gupta et al.):
Electrostatic steerers &  quadrupole triplets  ~ 40
Electrostatic benders        
Two / three way switchyards              
Support structure for above components & 
140 m of beam lines tubes

16. 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

18. DESIR collaboration ~120 scientists and engineers
~35 different institutions
~15 countries

19. SHIRaC cooler and buncher
from drawings to reality…
And here is the present status of the Shirac 2 prototype.
You can see here, the chamber for the RFQ, on the high voltage platform, and the faraday cage under construction.
The whole thing should be completed in April 2010 and then, final tests will have to be performed with high intensity beams.
Another important task that remains is to define requirements for an adaptation of the apparatus to a hot nuclear environment.
Completed end of 2010
Test with high intensity beams 2011
Adaptation to nuclear environment
Interfacing with HRS
G. Ban et al., LPC Caen

20. The high-resolution separator HRS
Final design of the HRS
which includes:
mecanical contraints
radioprotection considerations
optical needs
Resolution M/DM ≈ 30000
Beam envelope in X:
Beam envelope in Y:
T. Kurtukian Nieto et al., CENBG

21. Double Penning trap PIPERADE
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
Si Cube
b-g spectroscopy
neutron arrays
TAS

22. Super-allowed 0+-0+ Fermi decays2 F V M g K ft = GT A +
T1/2
QEC BR 0+
Ft = ft (1 + dR’ ) (1 – dc + dNS ) = K 2 F V M g
(1 + DR)
gv = gm * Vud
verify conserved vector current (CVC) hypothesis

23. DETRAP: Fundamental interactions at the LPCTrapne
nucleus q
b-n angular correlation measurement in a Paul trap:
-> exotic currents in the weak interaction: 6He, 8He , 19Ne , 35Ar
-> mirror b decay studies: 21Na,23Mg,25Al,27Si,29P,31S,35Ar,37K,39Ca,41Sc
LPCTrap setup at GANIL/SPIRAL
trapping & decay measurement
Pl. Sc.
DSSSD
Beam
µCP
cooling & bunching
in a RFQ
µCP
E. Liénard et al., LPC Caen 23

24. Precise measurements of b-n angle
b-n angular correlation
within the SM
x : Fermi fraction; r : GT/F mixing ratio
a = -1/3
6He
Future measurements: 8He , 19Ne , 35Ar
X. Fléchard et al., LPC Caen

25. DESIR: a low-energy facility for GANIL
RFQ & HRS

26. SPIRAL1 beams Projectile or target fragmentation at 95 MeV/A
main interest:
very neutron- and
proton-rich light
nuclei
1+  n+

27. SPIRAL2 beams UCx IS 2H n Target HI Fission, fusion evaporation, DIC
Converter
Fission, fusion
evaporation, DIC
main interest:
fission products
medium-mass
proton-rich nuclei
e.g. 20 MeV/A

28. S3 beams Fusion-evaporation reactions at Coulomb Barrier, DIC LISOL
main interest:
very heavy nuclei
N=Z nuclei
very short-lived
isotopes
refractory elements
LISOL

29. Transfer lines optics calculations: S1
adaptation point of LIRAT (-1.75m ) to adaptation point DESIR (+1.5m).
RMSx,y=3mm, ex,y RMS=20p.mm.mrad, DE/E=0.004pm, E=60kV, M=122 (ex.: 122Sn1+)
LIRAT adaptation
DESIR adaptation
L. Perrot et al., IPN Orsay 29

30. Transfer lines optics calculations: S3
adaptation point of S3 (-8.5m ) to adaptation point DESIR (+1.5m).
RMSx,y=3mm, ex,y RMS=20p.mm.mrad, DE/E=0.004pm, E=60kV, M=122 (ex.: 122Sn1+)
S3 adaptation
DESIR adaptation
L. Perrot et al., IPN Orsay 30

31. EQUIPEX Funding request
Phase 1 (July 2012-June 2015): investment costs
Work packages
Equipment cost (k€)
Management cost (k€)
Total (k€)
WP0: Project coordination
82.5
WP1: Buildings
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)
278.8

32. EQUIPEX Funding request
Phase 2 (July December 2019): running costs
Work packages
Operation cost (k€)
Management cost (k€)
Total (k€)
WP0: Project coordination 93
96.7
WP1: Buildings
542.6
564.3
WP2: Beam lines
225
234
WP3: Identification station 9
9.4
WP4: General purpose Ion buncher 18
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
answer in January 2012….