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Delivery of the helium liquefier system for the cooling of the hybrid project’s superconduting magnet

Delivered at the LNCMI on 5th August 2014, the helium liquefying system is made of several entities, which when put together in circuit will allow the cooling of the hybrid magnet’s superconducting magnet.

This equipment was purchased with the support of the European Regional Development Fund via the Région Rhône Alpes.

 Delivery and installation took place in 6 steps.

 

Buffer storage

Diameter : 1,9 m - Height : 6 m - Volume : 15 m3 - Weight : 3800 kg

15 bars compressed ultra pure gaseous helium storage.
 
 

Cold box

Length : 2,5 m - Width : 1,5 m - Height : 2,7 m - Weight : 2500 kg
 
Loosens the 15 bars compressed helium to 1 bar in order to cool it until liquefied at -269 °C.

Production : 130 to 170 litres/h of liquid helium according to the purity of the gaseous helium to liquefy.

 

 

Set up of the super insulated coaxial line under vaccum linking the cold box to the liquid helium 4500 litres storage bank.

 

Cycle compressor
 
Length : 3,15 m
Width : 1,95 m
Height : 2,16 m
Weight : 4600 kg
 

Compresses gaseous helium up to 15 bars before sending it to the cold box.

 

 

Oil removal system
 
Length : 1,75 m
Width : 1,2m
Height : 2,5 m
Weight : 1000 kg
Service pressure : 15 bars
Filters the helium after compression and traps the oil (residual oil content < 10-2 ppmv).

 

Dryer
 
Length: 1,3 m
Width : 1,2m
Height : 2,2 m
Weight : 500 kg
Service pressure : 20 bars

Allows to trap humidity contained in the helium before sending it to the cold box to be liquefied (residual water content < 1 ppmv).

- Commissionning operations : 4 months

- System start up : December 2014

- Performance tests : January 2015

- Final delivery of the equipment : February 2015