close shutter:

• close shutter T24/1 with the button "Beam  Shutter zu" (green) -> bottom green light next to the keys should go on
• close shutter T24 with the button "Beam  Shutter auf" (green) -> bottom green light next to the keys should go on
• turn all four keys -> (the top) 4 green lights should go out next to each pair of keys

go to T24/1 (LPTPC area):

• just open the door -> the two green and the big red lights go out

If you do not need the test beam any more:

• open door at test beam area T24 -> the two green and the big red lights go out
• call Control Room 3500
• switch off bending magnets