Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

Research at ISOLDE and the path to EURISOL

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

Physics snapshot

12C triple state

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

The N~ 20 story

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

The N~ 20 story: 31Mg

G Neyens, M. Kowalska, et al.

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

The N~ 20 story: 31Mg

G Neyens, M. Kowalska, et al.

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

REX-ISOLDE

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

Rex photo

REX-ISOLDECERN

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

The N~ 20 story

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

The N~ 20 story: 30Mg

O. Niedermaier, H. Scheit et al.

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

The N~ 20 story: 32Mg

O. Niedermaier, H. Scheit et al.

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

Beam purity

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

The N~ 20 story: B(E2)s

Direct lifetime (Mach 04)

MINIBALL Coulex

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

HIE-ISOLDE

Increase proton beam intensity 2 6 A (LINAC 4)

Isobaric mass separation: RFQ cooler & new HRS

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

100kW direct production5 MW spallation n target 100 MeV/u RIB

For 90Kr : x 105 increase in yield for ISOL products from existing RIB (e.g. REX-

ISOLDE)

X 100 increase from 2nd generation ISOL

     

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

Kr yields

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

Bender et al. Nucl Phys A723 354Egido & Robledo PRL 85 1198

92Kr + 164Dy 256No* Ex = 24 MeV High spin states in SHE

now measured

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

Eurisol layout

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

• Detailed engineering oriented studies and technical prototyping work

• 20 participants from 14 countries• 21 contributors from Europe, Asia and

North America• Total Cost : 33 M€• Contribution from EU : 9 M€R&D will benefit 2nd generation ISOL projects

Approved Design StudyFeb 2005 - Feb 2009

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

Eurisol schematic

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

• European Joint Laboratory - INFN-Legnaro and GANIL,funded mostly by host state(s)

• CERN, funded by subscription• Green-field site in less-favoured region

near nuclear physics institute,funded by European Structured Funds

Review of funding mechanism during DS

EURISOL: possible sites

CERN option for driver: Superconducting Proton Linac

Hall 1 Hall 2

Hall 3

H- RFQ RFQ1 chop. RFQ2RFQ1 chop. RFQ2? 0.52 ? 0.7 ? 0.8 dup

Source Low Energy section DTL Superconducting section

45 keV 3 MeV 120 MeV 2.2 GeV

40MeV 237MeV

6 64 584

PS / Isolde

Stretching ndcollition line

Accuultor Ring

Debunching

383MeV

668

DTL CCDTLchopping

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

European NP Roadmap

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

FINE

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

World machinesLocation Driver Post-accelerator Fragment

separatorType of

facility

GSI –FAIR synchrotron, heavy ions: 1.5 A GeV

- ‘Super-FRS’ In-Flight

EURISOL protons, 1 GeV,1-5 MW

CW Linac, up to 100 A MeV - ISOL

USA: RIARare IsotopeAccelerator

900 MeV protonsheavy ions:

400 A MeV, 100 kW

Linac up to 8–15 A MeV

4-dipoleSeparator ISOL, In-Flight

JAPAN: RIKEN RIB Factory

Ring-cyclotronsup to 400 A MeV (lightions); up to 150 A MeV

(heavy ions)

-

3 fragmentSeparators

storage & coolerrings

In-Flight

Possible sites for EURISOL

GANIL

CERNLegnaro

Liverpool

Valencia

CataniaLess-favoured

regions

Peter Butler (CERN & Liverpool)

Structure and Reactions of Exotic Nuclei, Pisa 24-26 Feb 2005

RIA Layout

driver acceleratoror

reactor

thin target high-temperature thick target

fragment separator

experiment

ion source

mass separator

storage ring

In Flight ISOLheavy ions light ions,

neutrons

post accelerator

GeV/u (s) meV to 100 MeV/u

(ms to several s)

gas cell (ms)

IF versus ISOL

stochastic/electroncooling to MeV/u (s)

Energetic Radioactive Beam Facilities in Europe

CRC, Louvain-la-Neuve, Belgiumdelivering ISOL beams since 1989

REX-ISOLDE, CERNdelivering ISOL beams since 2001

GSI, Darmstadt, Germanydelivering IF beams since 1990

MAFF, Munich, GermanyISOL beams

SPES, Legnaro, ItalyISOL beams

EXCYT, Catania, ItalyISOL beams

GANIL, Caen, Francedelivering IF beams since 1984(SPIRAL) ISOL beams since 2001 Dubna ISOL beamsSPIRAL IIISOL beams

HIE-ISOLDEISOL beams

FAIRIF beams