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Superconducting Spoke Resonator Cavities and Cryomodules Thomas H. Nicol Fermilab Accelerator Advisory Committee May 10 th – 12 th, 2006.

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Presentation on theme: "Superconducting Spoke Resonator Cavities and Cryomodules Thomas H. Nicol Fermilab Accelerator Advisory Committee May 10 th – 12 th, 2006."— Presentation transcript:

1 Superconducting Spoke Resonator Cavities and Cryomodules Thomas H. Nicol Fermilab Accelerator Advisory Committee May 10 th – 12 th, 2006

2 Fermilab 2 Outline Introduction Spoke Cavity Test Cryostat Spoke Cavity Design Slow Tuner Input Power Coupler Cryomodule Design Schedule Status

3 Fermilab 3 Introduction Front End Layout Meson Detector Building (MDB) Layout Meson Detector Building (MDB) “Tunnel” Cross-Section Front End Cryogenics Flow Schematic

4 Fermilab 4 Front End Layout Meson Detector Building SSR Sections

5 Fermilab 5 MDB Layout

6 Fermilab 6 MDB “Tunnel” Cross-Section

7 Fermilab 7 Front End Cryogenics Flow Schematic

8 Fermilab 8 Single Spoke Test Cryostat Goals Design Cost Estimate Status

9 Fermilab 9 Test Cryostat Goals Individually test each spoke resonator with or without its associated solenoid or quadrupole Accommodate all spoke resonator designs with minimal cryostat alterations Apply input power using production couplers in multiple orientations (horizontal, vertical, 45° etc.) Allow testing at 2 K if necessary for diagnostics Identical (or nearly so) test cryostats at Fermilab and Argonne to allow identical test configurations

10 Fermilab 10 Test Cryostat

11 Fermilab 11 Test Cryostat

12 Fermilab 12 Test Cryostat Cost Estimate Estimated Costs for Proton Driver Test Cryostat CategoryTotal Cost Vacuum Vessel $ 50,000.00 Magnetic Shielding $ 25,500.00 80 K Shield $ 9,000.00 He Reservoir $ 10,000.00 Valves $ 25,000.00 Heat Exchanger $ 7,000.00 Instrumentation $ 6,500.00 Piping $ 2,000.00 Bayonets $ 5,000.00 Relief System $ 4,000.00 Total $ 144,000.00

13 Fermilab 13 Test Cryostat Status Design review completed December 2005 Solid modeling and drafting are in-process Some commercial items are on order (valves, instrumentation, etc.) In-house produced parts (valves, bayonets, etc.) are available Expect major procurement of the vessel and internal piping in May or June 2006

14 Fermilab 14 Spoke Resonator Cryomodules Cavities Helium Vessel Slow Tuner Input Power Coupler Cryomodule Assembly

15 Fermilab 15  =0.22 and  =0.4 Cavity Cryomodules Two  =0.22 cryomodules (SSR-1), each containing –9 single spoke resonators, 325 MHz –9 solenoids Two  =0.4 cryomodules (SSR-2), each containing –11 single spoke resonators, 325 MHz –6 solenoids

16 Fermilab 16  =0.22 Cavity ~300 mm ~500 mm

17 Fermilab 17 Cavity and Helium Vessel

18 Fermilab 18 Slow Tuner Tuning range: ± 500 kHz

19 Fermilab 19 Input Power Coupler SSR input coupler power: 35 kW 4 K flange Cold window Warm window Vacuum vessel flange Instrumentation and pump-out

20 Fermilab 20 Input Power Coupler (exploded view)

21 Fermilab 21 Complete Cavity Assembly

22 Fermilab 22  =0.22 Cold Mass Assembly

23 Fermilab 23  =0.22 Cryomodule Assembly

24 Fermilab 24  =0.22 Cryomodule Assembly

25 Fermilab 25 SSR-1 Cryomodule Interconnect

26 Fermilab 26 SSR-1 Cryomodule Interconnect

27 Fermilab 27 Two SSR-1 Cryomodules 14.1 m

28 Fermilab 28 SSR-2 Section 960 cm 1 focusing period, length = 160 cm Drift space is introduced by missing the cavity

29 Fermilab 29 Cryomodule Heat Load Estimate Heat load estimate for a single  =0.22, 9-cavity SSR cryomodule Each unitUnit mult Total 80 K4.5 K80 K4.5 K Input coupler static (RF negligible) 2.370.67921.36.0 Support post2.760.41924.83.7 MLI18.51.9118.51.9 Cold to warm transition0.720.0921.50.2 Total66.111.8

30 Fermilab 30 Test Cryostat and SSR Cryomodule Schedule

31 Fermilab 31 Conclusions Test cryostat –Design is nearly complete –Some commercial parts on order –Procurement on the main vessels will begin soon SSR-1 and SSR-2 cavities, tuner, and input coupler –SSR-1 cavity design complete and quotes for prototype assembly have been received –Tuner design in-process, prototype is planned –Input power coupler prototype in fabrication, delivery expected late May or early June with testing to follow –SSR-2 cavity design is in-process SSR-1 cryomodules –Design in-process

32 Fermilab 32 Acknowledgements Test Cryostat –Mike White Spoke Resonator Design –Giobatta Lanfranco –Ivan Gonin Beam Dynamics –Peter Ostroumov –Gennady Romanov Input Power Couplers –Timergali Khabibouline


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