J. Roth

Bilateral Agreements EU-DOE:

e.g.: PISCES operation (following talk by Russ Doerner)

Bilateral Agreement EU-Russia:

collaboration on Material damage in transient heat loads

involving FZJ, ENEA, FZK, Kurtchatov, TRINITI

Programme of bilateral EU-Russia collaboration

Joachim Roth: Russian collaboration, Frascati, 2008

Meeting on EU-Russia bilateral agreement at PSI ToledoPresentations:Summary of work done on Dust production from W and CFC targets at TRINITI and KurchatovL.N. Khimchenko, RRC "Kurchatov Institute", Moscow, Russia

Summary of work done and status of TRINITI facility construction for testing of Be-coated and Be-clad targets N. Klimov, SRC RF TRINITI, Moscow, Russia

FZK modelling for Be, W and CFCB. Bazylev , S. Pestchanyi, I.Landman

CFC and W target characterizationT. Hirai, J. Linke, Forschungszentrum Jülich, Germany

Status of Article 7 contract and associated tasksA. Loarte, EFDA Close Support Unit – Garching (now ITER Org.)

L.N. Khimchenko

L.N. Khimchenko

Status of CFC and tungsten PFCs testing

1 WL5, ELMs, w = 0.5 MJ/m2, 100 pulses, incidence angle 60O Completed

2 Absorbed energy density measurementsby means of tungsten calorimeters atplasma incidence angle 80O

Completed

3 WL5, ELMs, w = 0.5 MJ/m2, 100 pulses, incidence angle 80O Completed

4 W2, disruptions, 5 pulses

5 CFC5, disruptions, more than 10 pulses

6 Additional argon plasma experiments Completed

7 CFC1, disruptions, 5 pulses

8 1/2W3+1/2W4, disruptions, 5 pulses

9 1/2W2+1/2WL3, disruptions, 5 pulses

N. Klimov, Kurtchatov Inst., Moscow

Status of QSPA modification for Be PFCs testing

1 Preparation the room of Bochvar Institute for QSPA-Be facility installation: - building and assembly jobs; - wiring work; - special box installation.

Completed

2 Connection the special box and facility rooms to power supply and special ventilation system of Bochvar Institute

Completed

3 Assembling and testing of power supply system of plasma gun facility (capacitors battery, battery charging system and control systems) at TRINITI.

Completed

4 Transportation and installation of power supply system of plasma gun facility at the Bochvar Institute

Completed

5 Assembling and testing of vacuum system of plasma gun facility (plasma gun, target chamber, receiver, vacuum lines, pumps) at TRINITI.

Completed

6 Transportation and installation vacuum system of plasma gun facility at the

Bochvar Institute

In process

7 Testing the all system together

8 Measurements of plasma flow parametersand calibration

9 First experiment with Be-target

N. Klimov, Kurtchatov Inst., Moscow

ELM experiments (4) Varying of plasma incidence angle, W-1%La2O3 , Q = 0.5 MJ/m2

α =

800

α =

600

1mm

20 exposures

1mm

50 exposures

1mm

100 exposures

1mm

20 exposures

1mm

50 exposures

1mm

100 exposures

N. Klimov, Kurtchatov Inst., Moscow

code MEMOS is upgraded to 3D geometry for simulations of macrobrush target damage in real experimental conditions

40 60 80 100 120 140 160 180 2000.0

0.1

0.2

0.3

0.4

0.5

=0.5 ms =1 ms =2 ms

Ed

ge

co

nve

x r

ad

ius

(c

m)

Velocity of melt motion (cm/s)

3D code MEMOS

B. Bazylev , S. Pestchanyi, I.Landman, FZK Germany

PEGASUS code:- Dust size distribution for NB31- modelling for W cracksTOKES code:- TOKamak Equilibrium and Surface processes code- Impurity concentrations for C-Be-W ITER wall with ELMs

Future plans:

- For W, model for the heat loads below melting threshold taking the plasticity into account.

- Dust particles production rates and size distributions have to be elaborated (W) and developed (Be).

- In cooperation between EU and RF the modelling group in FZK will continue numerical simulations supporting the future experiments at the plasma gun and JUDITH facilities.

Other codes:

B. Bazylev , S. Pestchanyi, I.Landman, FZK Germany

CFC and W target characterization

Presented byT. Hirai, J. Compan, J. Linke, G. Pintusk, K. WittlichForschungszentrum Jülich Germany

with contributions from B.N. Bazyleva, G. Federicic, N. Klimovd, I.S. Landmana, A. Loartea, M. Merolae, S.E. Pestchanyia, A. Zhitlukhind

a FZK Germany, bFZJ Germany, c EFDA Garching Germany, d TRINITI Moscow RF, e IO Cadarache France

CFC and W target characterization

(1) Targets and thermal loads in QSPA facility

(2) CFC target characterization

(3) W target characterization

(4) Summary

Takeshi Hirai | Institute of Energy Research | FZJ

CFC and W target characterization

Summary and conclusionC

FC

W

energy density E / MJm-2 (500 µs)

0.5 1.0 1.50

heat flux factor P ·Δt / MWm-2s1/2

20 400 60

melting of tile surface

dropletsbridging of tiles

melting oftile edges

crack formation

cracking of pitch fibres

PAN eros.> 100 shots

PAN erosion> 50 shots

PAN erosion> 10 shotsn

egli

gib

leer

osi

on

edge

s

negligibledamage

Takeshi Hirai | Institute of Energy Research | FZJ

Alberto Loarte, EFDA -CSU Garching

Status of Article 7 contract and associated tasks

Alberto Loarte

European Fusion Development Agreement

Close Support Unit - Garching

Objectives and plans for EU-RF research contract (Contract signed 1-2-2006):

Determine erosion/lifetime of the ITER first wall under ELM and disruption loads

Determine erosion/lifetime of the ITER first wall under mitigated disruption loads

Determine the effect of Be deposition on the ITER divertor target erosion and lifetime under ELM and disruption loads

Follow-up, EU participation, etc.

Regular meetings in Moscow every ~ 6 months (only 2 meetings held: Kick-off meeting in Feb-2006 and 1st meeting in Dec-2006)

Participation of EU scientists in experiments/analysis for short term &long term stays possible to be agreed

EU Targets will be returned to the EU for final “destructive” analysis

Publication of results in journals/conferences carried out with agreement of EU and RF scientists/institutes involved and clearance by EFDA

Practical Issues (I)

Alberto Loarte, EFDA -CSU Garching

EU Co-ordination

up 2007: EFDA CSU-Garching, Alberto Loarte

since 2008: concerning technology: F4E, Gabriela Seibene concerning physics investigation: EFDA

Understanding (with Gabriela):

- Workprogramme PISCES completely Physics → EFDA

EU programme agreed with EU PWI TF leaders and integrated into SEWG Mixed Materials

- Workprogramme TRINITI mostly Technology → F4E

Physics of surface damage → EFDA

Should remain integrated in SEWG Transient Loads

co-ordinated by Michael Lehnen and Roman Zagorski

Co-ordination of bilateral EU-Russia collaboration

Joachim Roth: Russian collaboration, Frascati, 2008