Status of the EURISOL Design Study and Plans for FP7

Peter Butler

University of Liverpool

TABLE 1). Participants in EURISOL Design Study

Participant Country Participant Country  

GANIL (coordinator)

France Inst. Physics Vilnius Lithuania

 

CNRS/IN2P3 France Warsaw University Poland 

INFN Italy Inst. Phys. Bratislava Slovakia  

CERN Europe U. Liverpool United Kingdom  

U. C. Louvain Belgium GSI Darmstadt Germany 

CEA France U. Santiago Spain  

NIPNE Romania CCLRC Daresbury United Kingdom  

U. Jyväskylä Finland Paul Scherrer Institute Switzerland 

L.M.U. München

Germany Inst. Phys. Latvia Latvia 

FZ Jülich Germany Stockholm. U. MSL Sweden  

20 Participants

  Topical areas and tasks of the EURISOL Design Study

Topical Area Tasks Lead Institution  

Management Management GANIL  

Accelerators Driver acceleratorPost Accelerator

Superconducting cavity prototyping

INFNGANILIN2P3

 

Targets Liquid Hg ConverterDirect targets

High power fission target

CERNCERNINFN

 

Physics, beams and safety Safety and radioprotectionBeam PreparationBeam Intensities

Physics and Instrumentation

CEAU. Jyväskylä

GSIU. Liverpool

 

Beta Beams Beta Beam Conceptual Design Study CERN  

12 Tasks

The EURISOL Road Map

• Vigorous scientific exploitation of current ISOL facilities : EXCYT, Louvain-la-Neuve, REX-ISOLDE, SPIRAL

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

• Design and prototyping of the most specific and challenging parts of EURISOL in the framework of the Design Study EURISOL-DS.

Ionsources

1 GeV/qH-, H+,

3He++

>200 MeV/qD+, A/q=2

Chargebreeder

Low-resolutionmass-selector

UCx

target

1+ ionsource

n-generator

20-150 MeV/u (for 132Sn)

To low-energy areas

Secondaryfragmentation

target

4-MWtargetstation

High-resolutionmass-selector

Bunching RFQ

To medium-energy experimental areas

H-

H+, D+,3He++

9 - 60 MeV/u 2-20 MeV/u

To high-energyexperimental areas

RFQs

Chargeselector

100-kW direct

target stationSchematic Layout for EURISOL facility

The Main Challenges

• Design a 5MW; 1GeV proton driver with additional capability of 200 AMeV deuterons and A/Q=2 Heavy Ions; build and test prototypes of the cavities.

• Design a liquid Hg converter which will accept 5 MW of beam power.

• Design a UCx target which will make the most efficient use of the neutrons produced.

• Evaluate the safety constraints of the above set up.• Design an efficient multi-user beam distribution system.• Design a superconducting HI LINAC capable of accelerating

132Sn up to 150 AMeV• Investigate technologies for the instrumentation of the future• Provide a conceptual study for a beta-beam neutrino facility.

Recent Management Accomplishments

• Submission of Second Annual Report on March 15. Only minor comments from EU.

• Successful Mid-Term Review on April 24 with Project Officer Christian Kurrer

• Spin off of the EURISOL user group; chaired by Angela Bonnacorso

• Organization of joint EURISOL-EURONS town meeting in Helsinki; Sept. 17-21

• Start of Site Study chaired by Alan Shotter

Date Time Event

Mon 17

All Day EURISOL-EURONS Town Meeting Talks

Tue 18 All Day EURISOL-EURONS Town Meeting Talks

Early evening

Poster Session & Aperitifs

Evening Town Meeting Dinner

Wed 19

Morning News from NuPECC

Future Activities in Nuclear Structure Physics in Europe

Afternoon Future Activities in Nuclear Structure Physics in Europe

Thu 20 Morning EURONS PCC Meeting EURISOL IAP Meeting EURISOL Task Meetings

Afternoon EURISOL Coordination Board Meeting

Fri 21 Morning EURISOL Management Board Meeting

EURISOL-EURONS town meeting, Helsinki, Sept. 17-21

Reference MMW Target Station

Hg converter and secondary fission targets

Hg loop with window8 UCX targets40x6x3 cm

Problems : Diffusion-Effusion TimeIon Sources

Beam

Hg flow

UC fission target

Ionsource

containmentBeO

reflectorwindow

CERN - INFN

Baseline Neutron converterOptimized ANSYS CFD analyses of

optimized liquid mercury neutron converter of SNS (neutron spallation source) type

The top view shows the converter with mercury flow guides to improve window cooling and avoid backflow in the converter

The middle view shows the temperature distribution in the window which is well below thresholds for irradiated material

The bottom view shows the temperature distribution of the circulating mercury which is well below the boiling point of mercury

CERN

Windowless « curtain » converter

IPUL – CERN - PSI

Beam

HgLamina flow of Hg

“MAFF” type solution for UC targets

Cyril Kharoua, Yacine Kadi and task 2

Fission Target Tube

Hg Proton to Neutron

converter

Hg inlet

Hg outlet

CERN - MUNICH

Driver: New baseline scheme with extended capabilities

• 2 injection lines for H,D, He and A/q=2 ions• magnetic stripping at 1 GeV of up to 100 kW of the H- beam to H0

(spilled beam intensity controlled by adjusting B)• beam splitting by bending of H- with a magnetic dipole• stripping of H0 to H+ by means of a stripper foil• H- to MMW target and H+ to 100kW targets

H-,D-

H+,D+, 3He+

+

RFQ176 MHz

HWR176 MHz

3-SPOKE 352 MHz

Elliptical704 MHz

4 MWH-

100 kWH+, 3He2+

1.5 Me

V/u

60 MeV

/q

140 M

eV/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

INFN

EURISOL Physics

EURISOL in FP7

• Baseline Plan: Lobby for EURISOL to be on ESFRI list in 2009 and apply for preparatory construction phase at next call in 2010.

• Question: Is this approach still valid when taking into account the delays in the construction of SPIRAL2 ?

• We envisage proposing a continuation of the DS supported by the funding agencies in the framework of NUPNET

• In order to continue developing the EURISOL concept: LOIs for EURISOL-NET and JRA on ISOL targets in FP7 I3.

EURISOL-NET

• 24 Participants including all the main DS participants• to allow the European laboratories that can

conceivably host EURISOL to network with each other, with the funding agencies via NUPNET, and with the user community;

• to encourage the exchange of know-how on technical & scientific developments in European ISOL facilities (Louvain-la-Neuve, REX-HIE-ISOLDE, SPIRAL-SPIRAL2 and EXCYT);

• to support the EURISOL User Group and to continuously develop the scientific case for EURISOL.

FINIS

OLD:

Temperature distribution in MMW target

• Acceptable power

densities in the Hg.

Flow pattern not

optimised; maximum

temperature ~260 ºC.

• Acceptable maximum

temperature in the

beam window (~350

ºC).

• Large temperature

gradient in the

window, inducing

mechanical stresses

above the acceptance

limits.

Power density (W/cm3/MW of beam)

PROBLEMS NOW

SOLVED

New 1 GeV/q beam splitters• magnetic stripping at 1 GeV of up to 100 kW of the H- beam to H0

• The main H- beam transport is not perturbed by the symmetric wiggler

• beam splitting by bending of H- with a magnetic dipole

• stripping of H0 to H+ by means of a stripper foil

• H- to target 1 and H+ to target 2(3,4).

• The spilled beam intensity can be controlled by adjusting the field strength of the magnetic stripper.

= 0.03 = 0.78

Ionsources

RFQ176 MHz

HWRs176MHz

Elliptical ISCL704 MHz

1 GeV/qH-, H+, 3He++

1.5 MeV/u

100 keV

60 MeV/q 140 MeV/q

>200 MeV/qD+, A/q=2

Chargebreeder

Low-resolutionmass-selector

UCx

target

1+ ionsource

n-generator

= 0.065= 0.14= 0.27= 0.385

QWRISCL

88 MHz

3 QWRs ISCL

88 MHz

8 HWRsISCL

176 MHz

SpokeISCL

264 MHz

20-150 MeV/u (for 132Sn)

To low-energy areas

Secondaryfragmentatio

ntarget

Schematic Layout for EURISOL facility

One of severaltarget stations

= 0.047

3-spoke ISCL 325 MHz

High-resolution mass-selector

Bunching RFQ

To medium-energy experimental areas

= 0.65

Elliptical ISCL704 MHz

= 0.09, = 0.15

H-

H+, D+,3He++

9.3- 62.5 MeV/u 2.1-19.9 MeV/u

To high-energyexperimental areas

RFQs

Chargeselector