The Academy of Sciences of the Czech rebublic - ASCR


The vacuum vessel forms a toroid with D-shape cross-section (see Fig. 1). It is welded from Inconel 625 and provides 60 ports available for diagnostics, heating system and maintenance access. The main parameters are shown in the Table 1 below:

 

Material

Inconel 625

Thickness

3 mm

Toroidal resistance

0.63 mΩ

Poloidal resistance

0.25 mΩ

Bakout temperature

150 °C

Volume

1 m3

Surface area

8 m2

Basic vacuum

10-6 Pa

Divertor material

graphite


Table 1: Main parameters of the COMPASS vacuum vessel


 

 

vessel_2.jpg

 

Fig. 1: Photograph of the COMPASS vacuum vessel