JULE-PSI project at Forschungszentrum Jülich - Oak Ridge National ...

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JULE-PSI project at Forschungszentrum Jülich - Oak Ridge National ...

Member of the Helmholtz Association

JULE-PSI project at

Forschungszentrum Jülich –

New capabilities to study plasma wall

interactions in nuclear environment

presented by Bernhard Unterberg

International Workshop on Requirements for Next Generation

PMI Test Stands in Fusion Research

August 31 – September 2, 2010, Oak Ridge, TN, USA

Bernhard Unterberg | Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ


Plasma Wall interactions in nuclear environment

New infrastructure facilities at FZJ:

Jülich Competence Centre for Nuclear Safety and

Nuclear Fusion Research (Hot Cells)

Fusion: An integrated concept to test neutron

irradiated and toxic plasma facing materials (PFMs)

under high heat loads and plasma exposure in Jülich

Thermo-mechanical properties of PFMs (fatigue,

shock resistance)

PWI processes (Erosion, fuel retention and dust

formation)

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 2


PWI with Be and neutron irradiated PFMs at FZJ -

Elements of the integrated concept

A linear plasma device inside a Hot Cell (JULE-PSI) with integrated

surface analysis station for toxic and activated materials (Tretention,

surface composition and morphology, mainly based on

laser techniques)

A non-nuclear twin outside the Hot Cells, developed from a pilot

experiment (PSI-2 Jülich)

High heat load e- beam test facility inside Hot Cell (JUDITH-1

upgrade)

High heat load e- beam test facility for large components outside Hot

Cell (JUDITH-2) but with Be handling capability

Hot Material Laboratory (Hot metallography, Laser profilometry,

thermo physics lab, scanning electron microscopy in Hot Cell

environment)

Dedicated modelling activities (ERO, B2-Eirene)

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 3


Linear devices in TEC allow to access

reactor relevant plasma regimes

10 2

10 1

10 3 Γ ion / m

E ion / eV

VISION-I

Ion flux density in linear devices at

normal incidence, ion energy can

be increased by target biasing.

ITER:

first

wall

JULE-PSI

ITER

Strike points

10 0

MAGNUM-PSI

10 -1

10 18 10 20 10 22 10 24 10 26

-2

s -1

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 4


Jülich Linear Experiment for PSI studies

in a Hot Cell (JULE-PSI)

Linear plasma device (on

the basis of PSI-2)

Target and analysis station

(à la MAGNUM-PSI)




Lock system for hot and toxic targets

Post-mortem characterization after

plasma exposure in JULE-PSI

Post-mortem characterization of PFMs

from nuclear devices (JET, ITER, …)

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 5


PSI-2 Jülich: A pilot experiment for JULE-PSI

PSI-2 has been moved from

Berlin to Jülich in October 2009.

Technological and scientific aims:

Test of target exchange

chamber (with heated targets).

Optimisation of operation of

plasma generator for use

inside a Hot Cell

(maintenance, selection of

basic diagnostics, etc.)

Development of a non-nuclear

twin machine for the later

JULE-PSI device

PWI studies on erosion,

deposition and fuel retention

(non-toxic and non-activated

materials)

PSI-2 in Berlin (until October 2009)

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 6


PSI-2 Jülich: A pilot experiment for JULE-PSI

PSI-2 is currently being

assembled in Jülich.

Technological and scientific aims:

Test of target exchange

chamber.

Optimisation of operation of

plasma generator for use

inside a Hot Cell (maintenance

of source, selection of basic

diagnostics, etc.), test of planar

cathode

Development of a non-nuclear

twin machine for the later

JULE-PSI device

PWI studies on erosion,

deposition and fuel retention

(non-toxic and non-activated

materials)

PSI-2 in Jülich (June 2010)

First plasma expected end of October 2010

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 7


Support frame for PSI-2 Jülich

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 8


JUDITH 1 upgrade - High heat load tests inside Hot Cell

Specifications:

total power: ≤ 60 kW

acceleration voltage: 120 … 150 kV

max. heated area: 100 x 100 mm 2

scanning frequency: ≤ 100 kHz

pulse duration: 1 ms ...

continuous

beam rise time: 130 µs

Operation with Beryllium and

neutron irradiated materials

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 9


JUDITH 2 – High heat load tests on large

components outside Hot Cell

Specifications:

electron energy 30 - 60 keV

beam power: 200 kW

irradiation area: 50 x 50 cm 2

power density: up to 10 GWm -2

pulse length: 1.5 µs ... cont. beam

beam scanning: digital mode

Operation with Be possible

Located in controlled area

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 10


The Hot Material Laboratory at FZJ

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 11


Hot Materials Lab (HML)

-­‐ fusion research

Large Hot Cells (GHZ):

-­‐ disposal of HTR fuel elements

-­‐ disposal of Dido components

-­‐ electron beam facility JUDITH-­‐1

To be closed

Chemical Hot Cells (CZ):

-­‐ chemistry of fuel cycle (fission)

To be closed 2010

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 12


Hot Materials Lab (HML) present status

SE

M

JUDITH-­‐2

Hot Machine Shop

Hot Cells (presently

no operaBon)

Thermophysics

Lab (th. cond.)

"Warm"

Metallography

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 13


Hot Materials Lab (HML) present status

SEM

JUDITH-­‐2

Hot Machine Shop

JUDITH-­‐1

Upgrade

Power Supply

for JUDITH-­‐1

Hot Cells (presently

no operaBon)

waste cell

Hot Metallography:

PreparaBon of samples

("dirty" work)

Thermophysics

Lab (th. cond.)

"Warm"

Metallography

Hot Microscopy /

other "clean" acBviBes"

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 14


Hot Materials Lab (HML)

planning

Hot Plasma Laboratory

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 15


Hot Material Laboratory at FZJ currently being refurbished

for hot operation of JUDITH and JULE-PSI

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 16


Time Schedule

2009 Transfer of PSI-2 from Berlin to Jülich

2010 Construction and upgrade of PSI-2 to pilot device (new target

station, dedicated PWI diagnostics, optimization of source and

vacuum chamber) – financial support FZJ funding

2010 - 2011 Upgrade of HML building for hot operation – financial support

local state NRW

2011 Commissioning of existing hot cells

Start of installation of JUDITH-1 upgrade

Installation of surface analysis station for fuel retention in Be

2011 Start of detailed design for hot plasma device

2012 - 2014 Installation of supply systems and analytic labs , construction of

JULE-PSI

2015 Commissioning of plasma device in hot cell

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 17


Development of modelling capabilities

and benchmark of codes

Mixed systems

Be-C-W

Retention in Be-

W compounds

Dust

production

Retention in

n- damaged

materials

Re-erosion of

Be deposits

Analysis of Be/T

samples (JET, ITER)

Erosion of n-

damaged PFMs,

impact of surface

morphology and

micro-structure

Transient

loads

Thermal

fatigue

tests

Procurement

and qualification

testing

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 18


The role of FZJ devices

within the Trilateral Eurogio Cluster

Reactor like

divertor conditions

(steady state

loads)

NO

Reactor like

transient heat

loads

YES, pulsed plasma

source under development

YES, with e - beam

Tritium NO no T- plasma but

moderate T handling

capabilities

Toxic materials

(Be)

NO

YES

NO YES YES

Neutron irradiated

materials

Simulation of neutron

damage by ion beam

irradiation planned

YES

Moderately activated

samples up to 200

mSv/h

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 19


Conclusion

New PSI facilities at FZJ will contribute to

Integrated characterization of thermo-mechanical and

physical-chemical properties of neutron irradiated and toxic

fusion materials

Detailed understanding of PWI with Be and in nuclear

environment to support predictive modeling for ITER and

beyond

Complementary capabilities to other new devices in TEC

Jointly used to conduct the new TEC programme “Integrated

approach to plasma surface interactions in fusion

reactors”

1st of September 2010

Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ No 20

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