physics at desir rfq cooler shirac hrs transfert beam lines desir building safety finances j.c....

• Physics at DESIR• RFQ cooler SHIRaC• HRS• transfert beam lines• DESIR building• safety• finances

J.C. Thomas, GANIL 19-20 July 2010

RFQ & HRS

• Decay studies with halo nuclei

• Clustering studies in light nuclei

• Super-allowed decays and the standard model of electro-weak interaction

• Cases of astrophysical interest

• New magic numbers

• Transition from Order to Chaos

• Shape coexistence, deformation and Gamow-Teller distribution

• High-spin isomers

• Test of isospin symmetry combined with charge exchange reactions

• Beta-delayed charged-particle emission: e.g. proton-proton correlation

The BESTIOL facilityThe BESTIOL facility(BEta decay STudies at the SPIRAL2 IsOL facility)

Charged-particle detection: neutron detection:

HPGe

LaBr3(Ce)

LaBr3 (Ce)

beam (NE111A)

Total absorption spectrometer Fast timing steup

• Collinear Laser spectroscopy: - spins - magnetic moments - quadrupole moments - change of charge radii

N=50, N=64, N=82, etc.

• -NMR spectroscopy: - nuclear gyromagnetic factor - quadrupole moment

monopole migration of proton and neutron single particle levels around 78Ni persistance of N=50 shell gap around 78Ni persistance of N=82 shell gap beyond 132Sn

• Microwave double resonance in a Paul trap: - hyperfine anomaly and higher order momenta (octupole and hexadecapole deformation)

Eu, Cs, Au, Rn, Fr, Ra, Am ….

LUMIERELUMIERE::Laser Utilisation for Measurement and Laser Utilisation for Measurement and

Ionization of Exotic Radioactive ElementsIonization of Exotic Radioactive Elements

for ground and isomeric states}

G. Neyens, P. Campbell, F. Le Blanc et al.

a normal-vacuum line with 2 (or 3) end stations for optical detection, polarized beam experiments, … a UHV beam with differential pumping for CRIS

C.D.P. Levy et al. / Nuclear Physics A 746 (2004) 206c–209cbased on collinear laser beam line at TRIUMF

Polarization axis

Polarization axis

-NMR set-up

Multi-purpose station(e.g. photon-ion coincidence detection)

BUNCHED and COOLED beamsfrom off-line ion source

S2 or S3 beams

CRIS beam line

Polarization axis

- asymmetry set-up

• Mass measurements

• Trap-assisted decay sepctroscopy

• In-trap decay spectroscopy

• Parity non-conservation measurements

• Angular correlation measurements and standard model of

electro-weak interaction

DESIRtrap:DESIRtrap:Trapping experiments at DESIRTrapping experiments at DESIR

Progress in: temperature stabilization pressure stabilization 4-way bender for injection line to use different sources multi-reflection TOF spectrometer for beam purification

MLL trap at Garching

4-way bender

Multi-reflection TOFspectrometer (U. Giessen)

CP recoil ion detector

beta telescope

PM

plastic scintillator

DSSSD

beam monitorCP

6He+

10cm

O. Naviliat-Cuncic, E. Liénard et al., LPC CaenO. Naviliat-Cuncic, E. Liénard et al., LPC Caen

cooling in H2 gas / bunching

trapping/measuring

• angular correlation

Purpose: cool high-intensity radioactive beams to low phase space 2 mm mradSolution: strong fields, high frequency

Simulated with microscopic approach

Requirements:700 mm longR0=5 mm10 MHz RF10 kVptp

SPIRAL2 High-intensity Radioactive beam Cooler

• Resonant circuit with inductive coupling (no ferrite cores)

• HV Tunable capacitor for broadband use

2 loops

• 500 W amplifier

F. Duval, G. Ban, R. Boussaid et al., LPC Caen

From Drawings to reality…

• Completed in April 2010• Test with high intensity beams in 2010• Adaptation to Nuclear environment • Interfacing with HRS

HRS: “U180”

B. Blank, T. Kurtukian Nieto, F. Delalee, L. Serani, CENBG

Purpose:• purification of radioactive beams• aim: resolution 20000 transmission: ~ 100%

Form: QQSQDMDQSQQ

Dm = = 31.5 cm/%R ~ 31000

( | )x

3 π mm.mrad

T. Kurtukian Nieto

Pumping unit

Slits

Diagonistics

SPIRAL2 identification station

CIME

DESIR

multipole

Quad-quad and quad-hexapole

quadrupole tripletquad-hex quad-quad

CIMECIME

HRS calendar:• global optical design finished• mechanical design and integration done• magnetical design of dipole on the way• detailed drawings of all elements for end 2010• ordering of dipoles in 2011• manufacturing of other elements at CENBG• installation at CENBG during 2013• transfer to GANIL 2014

-> following a design proposed by D. Lunney-> following a design proposed by D. Lunney-> 6 m long sections, 2 doublets of quadrupoles-> 6 m long sections, 2 doublets of quadrupoles

F. Delalee, CENBG

D. Lunney, CSNSM

-> following a design proposed by F. Varenne-> following a design proposed by F. Varenne-> 7 m long sections, 2 triplets of quadrupoles-> 7 m long sections, 2 triplets of quadrupoles

F. Varenne, GANIL

• collaboration: about 100 scientists on LOI and TDR• collaboration committee: 10 – 12 scientists and engineers• design: 2008 - 2010• construction begin: hopefully in 2012• commissioning: 2014• budget:

• base line project: 10-12 M€• experiments: 5-6 M€

DESIR beam transport sections

SPIRAL1

SPIRAL2

S3

DESIR

Beam lines to DESIR Design proposed by F. Varenne

Design proposed by D. Lunney

• mecanical design will be performed most likely at IPN Orsay in 2010/11

Optical and magnetical design of HRS

(Close to) final design of the HRSwhich includes: mecanical contraints radioprotection considerations optical needs

Resolution M/M ≈ 30000

Beam envelope in X: Beam envelope in Y: