FVTX cooling system

The diagram shows a schematic of the cooling system for one half of the VTX/FVTX. The manifolds are fed by large supply lines, and the manifolds have a large inner diameters (~1 inch). Thus the supply pressure is equal for each of the 10 small (1/4" teflon) supply lines, and the flow in each of them is independent of the flow in the others. One of these lines from the manifold supplies cooling to 2 quadrants.
Manifold located in the pocket of the CM support. Manifold pressure and flow are read out. Flow meters control the flow to each of the 10 small output lines.

The pressure drop through the flow meters is about 1psi, and the drop from there to the top of the VTX/FVTX (the input side) is about 7 psi. The output lines have 1/4" ID.

Temperatures from the OPC server:
FVTX coolant in
FVTX coolant out

Current allocations for the 10 '0°C loop' lines:
  • 5 strip cooling
  • 2 FVTX cooling
  • 3 free
Two of the outputs service the South side FVTX, one per quadrant. Near the detector, each line is split into 4, using 3 Y-shaped tees:

(to be modified 14 Mar 2012)
Thermocouples are mounted on each half-disk opposite of the input and output hose barbs.
[Thermocouples not yet readable]
The cooling channel runs through the outer perimeter of the half-disks.
The manifold that cools the VTX pads and the big wheels has 10+3 output lines, 1/4" ID each.
Current allocations for the 13 '10°C loop' lines:
  • xx Big wheels
  • xx VTX pads
  • xx free
Each of the 2 FVTX output lines services one quadrant's Big Wheel cooling plate.


Hubert Van Hecke
Last modified: Sun Mar 11 13:42:35 EDT 2012