1. 17-18 December 2013 LARP VTF Workshop BNL Proposal 1 A.Marone 12-12-13

2.  Existing cryogenic components to be used.  He recovery equipment.  System description.  1.9 K heat load summary.

3. 17-18 December 2013 LARP VTF Workshop BNL Proposal 3 Existing Cryogenic Equipment 1.CTI Model 4000 helium refrigerator. —Capable of producing 320 Liters/hr of liquid helium in conjunction with the wet expander. 2.Koch Model 1600 wet expander. 3.Mycom 800hp. 2 stage helium compressor. 4.2200 ACFM vacuum pump (2 stage). 5.1.8 K Service Cryostat. —(Designed for ILC 100W heat load through 10M transfer line.) 6.10,000 L liquid He storage dewar. 7.711mm dia, Vertical test dewar (6.1m long).

4. BNL MAGNET TEST FACILITY 4 CTI MODEL 4000 REFRIGERATOR/LIQUEFIER Primary source of liquefaction 1500 W at 4.5K Two reciprocating expansion engines rated at 250 rpm. He liquefaction: 320 L/hr (with both expansion engines and a Koch Model 1600 Wet Expander) Recently upgraded with a new LiN 2 heat exchanger and diagnostics for expanders BNL CRYOGENICS SYSTEM

5. BNL MAGNET TEST FACILITY 5 BNL CRYOGENICS SYSTEM Koch Model 1600 Wet Expander Largest in world Has two cylinders 7.6 cm bore; 5.1 cm stroke 60 rpm Low maintenance

6. BNL MAGNET TEST FACILITY 6 Nash- Kinema Vacuum Pump 2 stage (100hp each) 2.7 g/s @.016 bar (1.8K)

7. 17-18 December 2013 LARP VTF Workshop BNL Proposal 7 He Recovery Equipment 1.Brand new Revelle Model 5236 helium compressor. —150 CFM @ inlet. 2.Brand new Linde Model 500 helium purifier. 3.Brand new Bauer 50hp high pressure compressor.

8. 17-18 December 2013 LARP VTF Workshop BNL Proposal 8 System Description 1.The refrigerator (along with the Mycom compressor and the wet expander) will be used to supply the test dewar and service cryostat with 4.5 K liquid helium. 2.The 1.8 K heat exchanger is contained in the service cryostat, this is connected to the test dewar by a 6 meter long transfer line. 3.The vacuum pump is connected to the service cryostat to provide a 2.7g/s capacity @.016 bar. (1.8 K).

9. 17-18 December 2013 LARP VTF Workshop BNL Proposal 9 1.9 K Heat Load Summary (Service cryostat) 1.Existing instrumentation wires… 1.37 W 2.Instrumentation wire tube....146 W 3.1.8 K Vacuum tube….135 W 4.Existing superconducting leads….034 W 5.Hanging straps….008 W 6.Level probe leads & tube…..28 W Estimated Heat Load…. 1.97 W All 1.9 K surfaces have a 4.5 K heat shield Radiation heat is negligible. Internal 1.5 sq. meter heat exchanger 50w temp. rise approx..02K @ 1.8K

10. 17-18 December 2013 LARP VTF Workshop BNL Proposal 10 1.9K Heat Loads (Transfer line & Dewar) 1.Transfer line supports…..042 W 2.Instrumentation wires —(376) 28ga. and (8) 18ga…..664 W 3.Superconductors through lambda plate…..136 W 4.Lambda plate… 1.39 W 5.1.9K vessel ring… 2.38 W 6.Relief valve….541 W 7.1.9K transfer line termination….222 W 8.Magnet hanging clevis….098 W 9.Fill lines….003 W 10.Splice resistance (powered only)….. 1.85 W Estimated Heat Load….. 5.476 W (S.S) 7.326W (powered)

11. 17-18 December 2013 LARP VTF Workshop BNL Proposal 11 Transfer Line Temperature Rise Using the method demonstrated in LHC Project Report 125 (Superfluid Helium As A Technical Coolant) the temperature rise (above 1.8K) through the transfer line was calculated. 1.For a 10W heat load at the dewar the temp. rise would be <.003K 2.For a 40W heat load at the dewar the temp. rise would be.16K

12. 17-18 December 2013 LARP VTF Workshop BNL Proposal 12 Summary The total estimated heat load to 1.9K 1.97W +5.476W = 7.446 Watts (steady state) 9.296 Watts (dynamic) This is well within the capacity of our existing equipment which would be about 40 Watts.

13. 17-18 December 2013 LARP VTF Workshop BNL Proposal 13 S.C. Instrumentation Wires

14. 17-18 December 2013 LARP VTF Workshop BNL Proposal 14 S.C. Vacuum Tube & Existing Leads

15. 17-18 December 2013 LARP VTF Workshop BNL Proposal 15 Transfer Line Supports

16. 17-18 December 2013 LARP VTF Workshop BNL Proposal 16 Instrumentation & Containment Ring

17. 17-18 December 2013 LARP VTF Workshop BNL Proposal 17 Lambda Plate

18. 17-18 December 2013 LARP VTF Workshop BNL Proposal 18 Relief Valve

19. 17-18 December 2013 LARP VTF Workshop BNL Proposal 19 Relief Valve cont’

20. 17-18 December 2013 LARP VTF Workshop BNL Proposal 20 Superconductor Through Lambda Plate

21. 17-18 December 2013 LARP VTF Workshop BNL Proposal 21 1.9K Transfer Line Termination

22. 17-18 December 2013 LARP VTF Workshop BNL Proposal 22 Hanging Clevis

23. 17-18 December 2013 LARP VTF Workshop BNL Proposal 23 Transfer Line Temp. Drop

24. 17-18 December 2013 LARP VTF Workshop BNL Proposal 24 Transfer Line Temp. Drop (con’t)