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Status of the EURISOL Design Study and Plans for FP7. Peter Butler University of Liverpool. 20 Participants. 12 Tasks. The EURISOL Road Map. Vigorous scientific exploitation of current ISOL facilities : EXCYT, Louvain-la-Neuve, REX-ISOLDE, SPIRAL

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status of the eurisol design study and plans for fp7

Status of the EURISOL Design Study and Plans for FP7

Peter Butler

University of Liverpool

the eurisol road map
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.
slide5

UCx target

1 GeV/q

H-, H+,

3He++

n-generator

H-

4-MW

target

station

1+ ion

source

H+, D+,

3He++

>200 MeV/q

D+, A/q=2

Ion

sources

100-kW direct

target station

Schematic Layout

for EURISOL facility

Low-resolution

mass-selector

Secondary

fragmentation

target

Charge

selector

Bunching

RFQ

RFQs

High-resolution

mass-selector

Charge

breeder

20-150 MeV/u

(for 132Sn)

9 - 60 MeV/u

2-20 MeV/u

To high-energy

experimental areas

To low-energy areas

To medium-energy experimental areas

the main challenges
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
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
slide9

Reference MMW Target Station

Hg converter and secondary fission targets

Ion

source

Hg flow

UC fission

target

Hg loop with window

8 UCX targets

40x6x3 cm

Problems :

Diffusion-Effusion

Time

Ion Sources

Beam

BeO

reflector

containment

window

CERN - INFN

baseline neutron converter
Baseline Neutron converter

Optimized 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
Windowless « curtain » converter

Lamina flow of Hg

Hg

Beam

IPUL – CERN - PSI

maff type solution for uc targets
“MAFF” type solution for UC targets

Material Irradiation

Fission Target Tube

Neutron source

Hg outlet

Proton Beam

Hg Proton to Neutron converter

Hg inlet

CERN - MUNICH

Cyril Kharoua, Yacine Kadi and task 2

driver new baseline scheme with extended capabilities
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

4 MW

H-

B stripper

Elliptical

704 MHz

1 GeV/q

RFQ

176 MHz

HWR

176 MHz

3-SPOKE

352 MHz

H-,D-

100 kW

H+, 3He2+

=0.09

=0.15

=0.03

=0.047

=0.65 =0.78

H+,D+, 3He++

1.5 MeV/u

foil

stripper

60 MeV/q

140 MeV/q

>200 MeV/q

D, A/q=2

10

36

31

63

97

INFN

eurisol in fp7
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
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.
slide18

OLD:

Temperature distribution in MMW target

Power density (W/cm3/MW of beam)

  • 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.

PROBLEMS NOW

SOLVED

new 1 gev q beam splitters
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.
slide20

n-generator

UCx target

H-

HWRs

176MHz

3-spoke ISCL

325 MHz

Elliptical ISCL

704 MHz

Elliptical ISCL

704 MHz

RFQ

176 MHz

One of several

target stations

b = 0.03

b = 0.047

b = 0.65

b = 0.78

b = 0.09, b = 0.15

100

keV

1+ ion

source

1 GeV/q

H-, H+,

3He++

1.5 MeV/u

60 MeV/q

140 MeV/q

H+, D+,

3He++

>200 MeV/q

D+, A/q=2

Ion

sources

Low-resolution

mass-selector

Schematic Layout

for EURISOL facility

Secondary

fragmentation

target

Spoke

ISCL

264 MHz

8 HWRs

ISCL

176 MHz

3 QWRs

ISCL

88 MHz

QWR

ISCL

88 MHz

Bunching

RFQ

Charge

selector

RFQs

High-resolution

mass-selector

Charge

breeder

b = 0.385

b = 0.27

b = 0.14

b = 0.065

20-150 MeV/u

(for 132Sn)

9.3- 62.5 MeV/u

2.1-19.9 MeV/u

To high-energy

experimental areas

To low-energy areas

To medium-energy experimental areas