Hall D Cryogenic requirements

Now thru ?T. Whitlatch

Solenoid System Diagram as Installed in Hall D4 Superconducting

coilsBathed in Liquid

HeliumNominal Operation

1500A40 year old magnet

Coil 4 (of 4)

Solenoid Coil Test Set Up

Page 4

Cold box 3 refrigerator to be used in test lab and Hall D

Cryo Can due in May/June 1

All hardware ready by Mid June

Racks complete (and tested) by June

Power supply in place

Rails/Supports in place

AnacondaCryo Can

Power Supply

Rails

Coil 1End Plate

Racks

Test at Full Current and equivalent loads

Solenoid Magnet Installed in Hall D Dec 2011

Hall: D

Additional Heat Loads, as needed: Hall D solenoid

Technical Details, if known:

During cooldown of complete magnet in Hall D

Pinlet dP Tinlet Treturn Flow (g/s) Liquifaction Load***Load

atm atm K K g/s g/s W4K 3 1.8 4.5 300/10 5* 0.2 300K 3 1.8 300 300 5N2 5 90 20

* 2g/s augmented with helium supply dewar

Steady state

Pinlet dP Tinlet Treturn Flow (g/s) Liquifaction Load***Load

atm atm K K g/s g/s W4K 3 1.8 4.5 4.5 2 0.2 100N2 5 90 7

*** at inlet temperature

Solenoid coil test in Test Lab summer 2010-2011

Hall: D

Additional Heat Loads, as needed: Hall D solenoid

Technical Details, if known:

During cooldown of single coil in Test Lab

Pinlet dP Tinlet Treturn Flow (g/s) Liquifaction Load***Load

atm atm K K g/s g/s W4K 3 1.8 4.5 300/10 5* 0.2 300K 3 1.8 300 300 5N2 5 90 20

* 2g/s augmented with helium supply dewar

Steady state

Pinlet dP Tinlet Treturn Flow (g/s) Liquifaction Load***Load

atm atm K K g/s g/s W4K 3 1.8 4.5 4.5 1 0.2 50N2 5 90 7

*** at inlet temperature

Hall D Cryo TargetLiquid Hydrogen – 4 x 40 cm

< 1 g/s required

Use stand alone refrig?

Marginal to use Cold box 3