Status of EURISOL

Yorick BLUMENFELD

We acknowledge the financial support of the European Community under the FP6 “Research Infrastructure Action - Structuring the European Research Area” EURISOL DS Project Contract no. 515768 RIDS . The EC is not liable for any use that can be made of the information contained herein.

NuPECC recommends the construction of 2 ‘next generation’ RIB infrastructures in Europe, i.e. one ISOL and one in-flight facility. The in-flight machine would arise from a major upgrade of the current GSI facility: FAIR, while EURISOL would constitute the new ISOL facility

THE EUROPEAN PLAN

The EURISOL Road Map

• Vigorous scientific exploitation of current ISOL facilities : EXCYT, Louvain, REX/ISOLDE, SPIRAL

• Construction of intermediate generation facilities: SPIRAL2, HIE-ISOLDE, SPES

• Design and prototyping of the most specific and challenging parts of EURISOL in the framework of EURISOL_DS.

The EURISOL_DS in the 6th framework

• Detailed engineering oriented studies and technical prototyping work

• 20 participants from 13 countries• 21 contributors from Europe, Asia and North America• Total Cost : 33 M€• Contribution from EU : 9.16 M€• Continues to July 2009• 12 Tasks in 4 Topical Areas:

– Targets– Accelerators– Physics, beams and Safety– Beta Beams

User Requirements (Trento meeting; Jan 2006)

• Internal report 10-25-2007-001• Energy: Main LINAC up to 150A MeV for 132Sn; second LINAC up to

5A MeV and possibility for 0.1 to 0.7A MeV (astrophysics)+ low energy

• Energy variability: 0.5% (below 20A MeV) and 1A MeV (above 20A MeV)

• Energy definition : 0.1%• Time resolution : 0.5ns or better(?)• Time structure : 8.8 MHz (buncher-chopper) and retain also 88MHz• Beam sharing: 1 MMW target and 3 direct 100 kW targets of which

2 can be used simultaneously• Pure beams• Emittance : 2mm.mrad and 2mm2 beam spot

New baseline scheme with extended capabilities

• 2 injection lines for H,D, He and A/q=2 ions• SARAF scheme up to 60 MeV/q • IPNO scheme from 60 to 140 MeV/q• CEA scheme from 140 to 1000 MeV/u• cw beam splitting at 1 GeV (1 line 4 MW + 3 lines 100 kW)• Total length of the linac: ~240 m

H-,D-

H+,D+, 3He+

+

RFQ176 MHz

HWR176 MHz

3-SPOKE 352 MHz

Elliptical704 MHz

4 MWH-

100 kWH+, 3He2+

1.5 MeV

/u

60 MeV

/q

140 MeV

/q

1 GeV

/q

B stripper

foil stripper>200 MeV/q

D, A/q=2

=0.047=0.03=0.09=0.15

=0.65 =0.78

10 36 31 63 97

1 GeV Multiple Extraction•3 splitting stations•4 simultaneous users for cw proton beams:

•1 4 MW•3 0100 kW (continuously adjustable)

•Unique ability of EURISOL at present

EURISOL parallel cw Proton extraction

New Target ConceptMMW target for fission fragments

Double effusion line prototype(E. Bouquerel, L. Penescu)

Heat screen

Bellows

ISOLDE cold FEBIAD MK7Ion source

Cu body

2 pneumatic valves

RIB

1.4GeV protons

2xwater cooledtransfer lines2x20cm containers

Schematic lay-outTarget-ion sources

Pre-separators,beam gates

Ion cooling and bunching

High-resolution separators

Charge breeding:EBIS and ECR

q/m selection

Electrostaticdeflection

Post-acceleration andExperimental areas

Beam preparation lay-out:

Two complete beam preparation chains

Two parallel mass-purified beams for on-line experiments

Two charge breeders: EBIS (fast, low capacity, low

background, narrower charge state distribution, provides intensity also for light elements)

ECR (slow, high capacity, high background, access to intense beams including stable ones)

Modular (easy to expand) Robust (electrostatic deflectors

without moving parts)

SPIRAL-2 philosophy : Smoothest beam dynamics (regular FDO lattice, low number of -sections), Modular solution and simple cryostats, Separated vacuum (safety with FP), Warm focusing (easier for alignement), Possibility to insert diagnostics at each period, ease of tuning

Main technical requirements: Only 2-gap cavities (high q/A acceptance)

Max. accelerating fields 7.8 MV/m

Nominal operation for A/Q between 4 and 8

Design of the post-accelerator

Fragmentation of 132Sn (Preliminary results)

Fragmentation of 132Sn on BeD. Perez and D. Dragosavac

Kr isotopes

Inte

nsity

(pps

)a)

a)Yield for in-flight production of fission fragments at relativistic energy

Yields after acceleration Comparison between facilities

Radioactive ISOL beam yields2020

2016

2012present

Possible Locations?

The Site Investigation Panel (chaired by Alan Shotter) will investigate the implementation and cost of

EURISOL in these 3 hypotheses

Time scales

Project definition

Construction

Exploitation

2005 2007 2009 2012 2020

FAIR

Why a EURISOL User Group?

• To build up an identifiable User Community for EURISOL

• To continuously update the EURISOL Physics Case; while Task 10 will now mainly concentrate on instrumentation.

• To continue to furnish input to the EURISOL concept after the end of the DS

• To interact with the user communities of the current ISOL facilities.

Goals of this week

• Updating of the Physics Case• Putting EURISOL in perspective with the other

worldwide initiatives.• Examining the current technical solutions in the

light of the physics requirements (Thursday morning)

• Discussing the practical organization and future actions of the UG in the framework of the future of EURISOL (Wednesday, 14:30-16:00)