Transcript Status of the EURISOL Design Study

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.
THE EUROPEAN PLAN
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 EURISOL Road Map
• Vigorous scientific exploitation of current ISOL facilities : EXCYT,
Louvain, REX/ISOLDE, SPIRAL
• Construction of intermediate generation facilities: SPIRAL2, HIEISOLDE, 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:
–
–
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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 : 2p mm.mrad and 2mm2 beam spot
New baseline scheme with
extended capabilities
•
•
•
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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-
RFQ
176 MHz
36
=0.03
=0.047
140 MeV/q
10
=0.09
=0.15
Elliptical
704 MHz
3-SPOKE
352 MHz
60 MeV/q
1.5 MeV/u
H+,D+,
3He++
HWR
176 MHz
31
1 GeV/q
B stripper
=0.65 =0.78
>200 MeV/q
D, A/q=2
63
97
4 MW
H-
100 kW
H+, 3He2+
foil
stripper
1 GeV Multiple Extraction
•3 splitting stations
•4 simultaneous users for cw proton beams:
•1  4 MW
•3  0100 kW (continuously adjustable)
•Unique ability of EURISOL at present
EURISOL parallel cw Proton extraction
New Target Concept
MMW target for fission fragments
Double effusion line prototype
(E. Bouquerel, L. Penescu
)
Bellows
Cu body
RIB
ISOLDE cold
FEBIAD MK7
Ion source
1.4GeV protons
Heat
screen
2 pneumatic
valves
2xwater cooled
transfer lines
2x20cm containers
Schematic lay-out
Target-ion sources
Pre-separators,
beam gates
Electrostatic
deflection
Ion cooling and bunching
High-resolution separators
Charge breeding:
EBIS and ECR
q/m selection
Post-acceleration and
Experimental 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)
Design of the post-accelerator
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
Fragmentation of 132Sn (Preliminary results)
Fragmentation of 132Sn on Be
D. Perez and D. Dragosavac
Yields after acceleration
Comparison between facilities
Intensity (pps)
a)
Kr isotopes
a) Yield for in-flight production of fission fragments at relativistic energy
Radioactive ISOL beam yields
2020
2016
2012
present
Possible Locations?
The Site Investigation Panel (chaired by Alan Shotter) will investigate the implementation
and cost of
EURISOL in these 3 hypotheses
Time scales
2005
2007
2009
FAIR
Project definition
Construction
Exploitation
2012
2020
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)