1. Sébastien Bousson (CNRS-IN2P3-IPN Orsay)
TIARA PP
TIARA PREPARATORY BOARD
2nd November CERN
TIARA-PP WP 10
« EURISOL »
Sébastien Bousson
(CNRS-IN2P3-IPN Orsay)

2. The multi-MW target complex
WP 10 Framework
EURISOL is the next generation of a facility aiming at the production of radioactive ion beams (RIB) using the ISOL technique.
A Design Study within FP6 has just finished, and 2 key components will require an important R&D program and intense experimental tests to fulfill the Eurisol requirements
The multi-MW target complex
The low beta superconducting (SC) cavities (for driver and post-accelerator)
The objective of this WP is to coordinate the definition and the design of two test benches: an irradiation test facility for the high power target developments and a cryogenic test cryostat for testing fully equipped low beta superconducting cavities.
Important synergies of these equipments with other projects : ESS, ADS (EUROTRANS, MYRRHA)…

3. All these research items will require experimental studies.
WP 10.1 : Irradiation test facilities for MMW target development
Full scale test of the MMW target available only in the final facility !
Achieving the design of the full scale target for Eurisol will require several partial tests: sub-components, irradiation at lower power, instrumentation tests… N°
Research Items
Application 1
Test coaxial guided stream (CGS) Window cooling with laser heating
Performance 2
Test windowless transverse film (WTF) stability with high speed camera 3
Sub-scale Target irradiation 4
Ultra-sound sensors
Instrumentation 5
Pressure sensor capillaries 6
Heat Transfer Coefficient (HTC) method improvements with laser 7
Primary/Secondary fluid interaction study
Safety 8
Investigation of the pressure wave from a pulse
Science 9
Investigation of on-line isotopic separation 10
Fatigue under Liquid Metal (LM) corrosion and irradiation study 11
Influence of wall conditions on LM Heat transfer 12
Long-duration test facility
Engineering 13
Dedicated LM Component development
All these research items will require experimental studies.

4. WP 10.1 : Irradiation test facilities for MMW target development
Work breakdown:
Task : Identification of the necessary irradiation test facilities, definition of their specifications and possible locations
Task : Design study of the irradiation test facilities, as they will be defined in the previous task
Milestones
Num
Nat[1]
Short name
Description
month
M10.1.1 R
Report on the definition of the required test facilities and possible locations 12
M10.1.2
For each defined facility, technical design report of the irradiation test facility 36
Deliverables
Num
Nat[1]
Short name
Description
month
D10.1 R
Design of the test irradiation facilities 36

5. WP 10.2 : Designing a low beta cavity test cryostat
Before assessing that a SC cavity is validated for an operational use in an accelerator, the final experiment is a cryogenic test at nominal RF power of the fully equipped cavity (power couplers, cold tuning systems…)
Very few “accelerator configuration” test cryostat are existing in Europe and they are designed for elliptical cavity testing.
Such a cryostat, specific and devoted to low beta SC cavities will be a useful complementary equipment.

6. The Eurisol Facility Layout
Driver
RIB
production
Beam preparation
Post-Accelerator

7. WP 10.2 : Designing a low beta cavity test cryostat
Work breakdown:
Task : Identification of the users requirements for the cavities and all their ancillary systems
Task : Design of the vacuum vessel including magnetic and thermal shields, design of the cavity supporting system.
Task : Design of the cryogenic cold box to supply the vacuum vessel with the different cryogenic fluids.
Milestones
Num
Nat[1]
Description
month
M10.2.1 R
Preliminary design and operation mode of the test cryostat 15
M10.2.2
Technical Design Report of the test cryostat 32
Deliverables
Num
Nat[1]
Description
month
D10.2 R
Complete design of the test cryostat 32

8. WP 10 Partners (person.month figures are still preliminary)
WP 10 : Partners & cost
WP 10 Partners (person.month figures are still preliminary)
WP number 10
Start month 1
End month 36
WP Title
Eurisol test infrastructures
Activity Type
RTD
Objective
Design study of Eurisol R&D test benches for high power target and low beta superconducting cavities
Participant number 2 3 8
CERN
CNRS
PSI
ESS-S
(Lünd)
Person-months 15 32 12
WP 10 Associates:
IPUL Salaspils (LV) : Liquid metal loop technology
FZK Karlsruhe (Ge) : Corosion tests (KALA loop)
WP 10 Costs (estimate):
Total : 700 k€
EU request : ~ 350 k€