Categories:

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Categories A- Management B- Documentation C-
Mechanics D- Control E- MM-waves F- Physics G-
Catia H- Minutes meetings I- Remote handling J- 
Cooling
Title Presentation Cadarache March 11 2003
P030
Author B.S.Q. Elzendoorn Issue date
17-12-02 Draft date 17-12-02 Revision date
Approved Name Date Project leader
A.G.A. Verhoeven Design coordinator B.S.Q.
Elzendoorn 17-12-02 Author B.S.Q.
Elzendoorn 17-12-02 Author
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• ITER-ECRH remote steering top-launcher project
  team
• Project leader A.G.A. Verhoeven
• RD
• - Coordination mechanical design B.S.Q.
  Elzendoorn
• - Computer Aided Design J. Tichler
• - Computer Aided Design D.M.S. Ronden
• MMW technology W.A. Bongers
• MMW technology B.A. v. Wieringen
• - MMW technology M.F. Graswinckel
• MMW technology and control J.J.B. Stakenborg
• Finance, Mech. Design and Planning P.
  Hellingman

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Remote Steering principle for the ITER ECRH
Launching system on Tore Supra

• Contents
• Objectives
• System specifications
• What kind of tests
• Proposed test set-up for Tore Supra
• Four different principles for the
• steerable mirror system
• Waveguide assembly.

Presented by B.S.Q. Elzendoorn
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Location of top-launching systems
Bio-shield
Port duct of upper port
ITER upper-port
Equatorial level
Blanket cooling pipes
Port plug
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In order to keep costs en design time as low as
possible are the objectives

• To test a full ITER ECRH launching system on
  Tore Supra
• To keep modifications on the Tore Supra launcher
  to a minimum
• To make design as much as possible compatible
  with future plans, e.g testing in Karlsruhe and
  Lausanne
• To make the launching system suitable Tore Supra
  

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Proposed system parameters in order to ensure
ITER relevancy

• System specifications
• Square waveguide will be made of copper, inner
  dimensions 42x42 mm, Length 3304 mm
• Circular waveguide, diameter 63.5 mm
• Safety valve DN63LF , full metal, supplier
  Caburn
• Single disc actively cooled diamond window
  (Karlsruhe)
• Steerable mirror, steerable in one direction,
  virtual rotation point (DDD 5.2)
• Preferred operational temperatures, in-vessel
  cooling system 200 degrees Celsius,
• secondary vacuum containment cooling system 100
  degrees Celsius
• Vacuum pressure in secondary vacuum containment
  10-6 mbar
• Seal for secondary vacuum containment can be
  made of Viton or silicon rubber
• Coolant hoses, double bellow, supplier ERIKS, or
  spiral shaped copper tubes
• Actuator, as proposed in DDD 5.2 (Chavan).

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What can be tested in one set-up at Tore Supra

• Vacuum valve placed in vacuum
• Mechanical performance of the movable mirror
  systems
• Diamond disc windows
• Actuators as described in DDD 5.2
• Control systems
• Cooling system for mirrors
• Cooling system of waveguides
• Cooling system of waveguides
• Arc detection system
• Power loss in MMW system under high power
  conditions (calorimetric measurements)
• Beam behavior under high power conditions

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Proposal test set-up for Tore Supra
ITER test launcher consisting of two complete
ITER systems and two Systems without safety
valves
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Integration problems
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Launching system in vacuum containment
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Dimensions square waveguide for ITER Valve
diameter aperture 63 mm max height/width
waveguide 44.55mm  Frequency 170 GHz Wave length
1.8 mm  Waveguide dimension 42 mm square Length
waveguide 3998 mm
Extension tube to enlarge the length of the
circular waveguide up to 3293 mm
Dimensions square waveguide for Tore Supra Valve
diameter aperture 63 mm max height/width
waveguide 44.55mm Frequency 140 GHz Wave length
2.1 mm Waveguide dimension 42 mm square Length
waveguide 3293 mm
Length waveguide4a2/lambda
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Plug-in mirror system in ITER port plug
Connected to the port plug
Connected to the waveguide system
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Four different principles for the steerable
mirror system
Difficult design, two different movements of the
steerable mirror
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Ellipsoid focusing mirror seems far from
optimal from the mmw technique point of view
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The axial misalignment 1.04 mm and 0.88
mm for/- 10 degrees
Distance from mirror to rotation point is 2x the
distance from the mirror to entrance of the
waveguide
Virtual rotation point on axis
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The axial misalignment 0.014 mm for /- 6 Degrees
and below 0.07 /- 10 degrees
Best option until now
Point off rotation 3x distance between steerable
mirror and the entrance of the square waveguide
to the left, and 1x upwards
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Virtual rotation point off axis
Animation D. Ronden Discovered by M. Graswinckel
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Waveguide assembly which fits in a circular
waveguide as used in the Tore Supra launching
system (63.5)
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Possible option for waveguide assembly
Cooling channel rectangular waveguide
Pumping hole
GA corrugated waveguide, copper, 42x42x500 mm
Waveguide connector