The BST is fully equipped in 1998.
In the following list the z-position are shown, where detectors have
been installed.
position 3 - disc 0
position 4 - disc 1
position 5 - disc 2
position 6 - disc 3
.
position 8
position 9
position 10 - disc 4
position 11 - disc 5
position 12 - disc 6
position 13 - disc 7
At positions 8, 9, 10, 11 in 1995 the first BST(1)
prototype sat; in 1996 the setup included sectors 0..5 at positions
10...13 while in 1997 sector 8 for positions 11...13 was added.