In-Vessel Mirrors for the MAST-U EBW System

A Prior Information Notice
by UNITED KINGDOM ATOMIC ENERGY AUTHORITY

Source
Find a Tender
Type
Contract (Goods)
Duration
not specified
Value
£0-£1
Sector
INDUSTRIAL
Published
15 Dec 2021
Delivery
not specified
Deadline
n/a

Concepts

Location

Oxfordshire:

Geochart for 1 buyers and 0 suppliers

1 buyer

Description

UKAEA is installing an Electron Bernstein Wave (EBW) system on MAST-U, which aims at injecting two dual-frequency (28GHz and 34.8GHz) microwave beams each of up to 900kW and pulse duration of 4.5s. There are eight 1 OFF in-vessel copper-coated graphite mirrors. The primary function of the in-vessel mirrors is to redirect the microwaves, produced by the gyrotron, and direct these into the plasma. The main microwave mirror face has a curved profile, providing focusing of the beam. The curved profile is defined using an ellipsoid shape. These mirror faces absorb a small percentage of the microwaves. These absorbed microwaves act as a heat flux on the mirror face in a gaussian distribution, peaking at 750kW/m2. A uniform radiative plasma load of 210kW/m2 also acts on all faces excluding the mirror face.

CPV Codes

  • 38622000 - Mirrors
  • 14715000 - Copper
  • 14814000 - Artificial graphite
  • 71333000 - Mechanical engineering services

Other Information

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Reference

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