TheThe DESIRDESIR facility at SPIRAL2facility at SPIRAL2

An opened collaboration to promote ISOL beams at SPIRAL2 :

Result of the SPIRAL2 workshop held at GANIL on July 2005:

« Physics with low energy beams at SPIRAL2 »

http://spiral2ws.ganil.fr/2005/lowenergy/program/presentations/

Working groups:

- Beam handling and beam preparation

- Laser spectroscopy

- Decay spectroscopy

B. BlankB. Blank, M.J.G. Borge, P. Cambell, F. Herfurth, F. Leblanc, M. Lewitowicz, D. Lunney, O. Naviliat-Cuncic, G. Neyens, J.C. ThomasJ.C. Thomas and …

Désintégration, Excitation et Stockage d’Ions Radioactifs

DESIR Physics programDESIR Physics program

Laser spectroscopy: collinear laser spectroscopy and -NMR moments, spins, radii, etc…

Fundamental interactions: CVC, CKM matrix: 00++ → 0→ 0++ transitions transitions exotic interactions like scalar or tensor currents electric dipole moments to test CP and T violation with e.g. Ra

Decay spectroscopy: p-p correlationp-p correlation, astrophysics, cluster emission, GT strength exotic shapes, halo nuclei, etc...

Solide state physics and other « applications »

Call for LoI : May 2006Call for LoI : May 2006

“Physics with low energy beams at SPIRAL2”

1. A new experimental area of about 1500m2

2. A High Resolution mass Separator (HRS) with a resolution of M/M>5000Proposed separation scheme: Low Resolution mass separator → RFQ cooler → HRS

• Availability from day 1Neutron-rich and neutron-deficient beams

2. More than one production target – ion source station (flexibility) Fast change of the mass setting

5. Extension of the current LIRAT beam line

Conclusions of the SPIRAL2 Workshop (July 2005) : M. Lewitowitcz

Technical requirements

SPIRAL 2 LAYOUTSPIRAL 2 LAYOUT

LINAGLINAG

Production buildingProduction building

GANIL facilityGANIL facility

LIRATLIRAT

DESIRDESIR

Production buildingProduction building

CIM

ECIM

E

11++

nn++

LIRAT LIRAT beambeam

Ident.Ident.

HRSHRS

Exp. HallExp. HallDeuteron

UndergroundUnderground

Ground-floorGround-floor

Cooling/BunchingCooling/Bunching

Spectroscopy Spectroscopy of trapped of trapped

beamsbeams Laser Laser SpectroscopySpectroscopy

Decay studiesDecay studies

Other Other purposespurposes

Fundamental Fundamental InteractionsInteractions

Synergies with Synergies with FAIR/NuSTAR FAIR/NuSTAR andand LPCLPC

expertiseexpertise

Beam preparation: cooler, traps, trap-assisted spectroscopy (MATS)

Laser setups (LASPEC)

Neutron detection (NCAP)

New types of charged-particle and gamma detectors (e.g. LaBr3)

Low-energy beam diagnostics

Towards DESIRTowards DESIR DESIR project presented to the IN2P3 SC : 07/06DESIR project presented to the IN2P3 SC : 07/06

Proposals for experiments: spring 2007Proposals for experiments: spring 2007

DESIR building design study: B.Blank, CENBGDESIR building design study: B.Blank, CENBG

DESIR HRS+cooler: D. Lunney, CSNSMDESIR HRS+cooler: D. Lunney, CSNSM

Laser ionization source: F. Le Blanc, IPN Orsay-ALTOLaser ionization source: F. Le Blanc, IPN Orsay-ALTO

Decay spectroscopy station: VS3 project (ANR 2006)Decay spectroscopy station: VS3 project (ANR 2006)

DESIR identification station: J.-C. Angelique, LPC (??)DESIR identification station: J.-C. Angelique, LPC (??)

Test bunch for diagnostic tools at LIRAT ?Test bunch for diagnostic tools at LIRAT ?

DESIR LoI presented to the SP2 SAC : autumn 2006DESIR LoI presented to the SP2 SAC : autumn 2006

Possible extension of LIRATPossible extension of LIRAT Multi-beam facility (physics program 2011)

Tests and development for SPIRAL2 & DESIR

LIRAT today

SPIRAL2SPIRAL2

11++ nn++

LPC TrapLPC Trap

R&DR&D

Spec. Spec.

Nuclear structure of neutron-rich nuclei by means of and

e- spectroscopy : 8282--8686Ge at ALTO (year 2)Ge at ALTO (year 2) Correlation studies : nucleon-nucleon interaction and cluster

structures from multiparticle emission processes (-xp, -x) : -2p decay of -2p decay of 3131ArAr at LIRATat LIRAT (year 4)(year 4)

Physics motivation

RIB facilities: ALTO, LIRAT, DESIR, (ILL, ISOLDE ?)

Funding demand: ANR 2006 – 543 k€

A VVersatile and SStandalone SSpectroscopy SSetup

Test bench for low energy (radioactive) beam diagnostics

8 Si Cube, VME acquisitionB. Blank, CENBG

Fast (>5 m/s) tape transport system

Ph. Dessagne, IReS

Stable & radioactive beam diagnostic

systemJ.-C. Thomas, G. Frémont, GANILN. Orr, J.-C. Angélique, L.A. Achouri, G. Iltis, J.-M. Gautier, LPCG. Simpson, LPSC

D. Verney, IPNO

Profiler

Profiler

Collimators

FaradayCup

Low EnergyBeam

SiXY

Segmented detector

Man power & funding requestMan power & funding request

Contribution du LPCContribution du LPC scientifique : 3 personnes à 20 % pendant 18 moisscientifique : 3 personnes à 20 % pendant 18 mois technique : 2 personnes à 30 % pendant 24 et 36 moistechnique : 2 personnes à 30 % pendant 24 et 36 mois

Budget :Budget :