1. Schematic diagram of the cryogenic system
to TT10
Nitrogen or helium gas
LN2 Storage vessel
buffer storage vessel 1 2 3 4 G1 G2
Magnet cryostat
VALVE BOX
Schematic diagram of the cryogenic system

2. System Operation Operation Valve 1 2 3 4 5 Valve G1 Valve G2
Fill Cryostat from Buffer Vessel
Closed
Open
Fill Cryostat from LN2 Storage Vessel
Empty Cryostat
Pre-cool Buffer Vessel or bypass Cryostat

3. TUNNEL TT2A TUNNEL TT2 to TT10 nitrogen or helium gas
LN2 Storage vessel
buffer storage
vessel, 150 l 1 2 3 4 G1 G2
Magnet cryostat, 100 l
VALVE BOX
nToF11
SCHEMATIC DIAGRAM OF THE CRYOGENIC SYSTEM
All valves and junctions are in the valve box
All valves are remotely operable in TT2
Valve 1 is a proportional valve
Safety pressure relief valves are not show
Demountable joints
LN2 lines
Cold nitrogen gas lines
Warm nitrogen gas line
GROUND LEVEL
TUNNEL TT2A
heat exchanger
TUNNEL TT2 5