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Nufact07, Okayama CM20 at RAL, Feb 10-13, 2008 Shigeru Ishimoto KEK AFC module status: Liquid Hydrogen Absorber.

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Presentation on theme: "Nufact07, Okayama CM20 at RAL, Feb 10-13, 2008 Shigeru Ishimoto KEK AFC module status: Liquid Hydrogen Absorber."— Presentation transcript:

1 Nufact07, Okayama CM20 at RAL, Feb 10-13, 2008 Shigeru Ishimoto KEK AFC module status: Liquid Hydrogen Absorber

2 OUTLINE 1) MICE Absorber Design by KEK 2) MICE Absorber Design by MIRAPRO 3) MICE Test Cryostat at KEK 4) Superfluid L-He Absorber R&D at KEK 5) Summary and Plan

3 AFC Module with MICE Absorber G10 Supports 30 Pin Feedthrough LH2 IN Mini-Flanges (In-Seal)

4 G-10 Support Absorber & Pipes Mini In-Flange (Al-SS) 30 Pin Feedthrough Tee  L-H2 IN G-H2 OUT He/N2 OUT He/N2 IN

5 A-A’ (22.5 deg.) G-H2 OUT  L-H2 IN He/N2 OUT He/N2 IN Straight Pipes Tee 30 Pin Feedthrough No Metal Transition

6 LH2 IN/OUT He IN/OUT Mini In-Flange; Al/SS joints In SS AL Mini Rotation Flange

7 G-10 (x8) t=1, W=25, L=90 mm Total ~ 0.2 W SS, t=1 Screws on AFC Magnet SS  15.7 AL  Detail of Flange and G-10 Support From Absorber

8 AL(D=669mm) L=  0.5 mm (Al 20K, SS 300K) Welding at Upside down position is also possible Adjustable Pipe Welding Method 386 L

9 Instrumentation of Sensors & Heaters

10 MICE Absorber Design by MIRAPRO

11 MIRAPRO Co. Restart Design; Jan, 08 Rough Estimation; Feb, 08 Official Order; Jun, 08 Absorber Body #1 to KEK; ~ Sep, 08 Assembly and Test;

12 MICE Absorber Design by MIRAPRO  L-H2 IN G-H2 OUT He/N2 OUT He/N2 IN A A

13 MICE Absorber Design by MIRAPRO  L-H2 IN G-H2 OUT

14 MICE Absorber Design by MIRAPRO He/N2 OUT He/N2 IN A-A

15 MICE Absorber Design by MIRAPRO

16 MIRAPRO Co.

17

18 Rough Estimation; Feb,08 Body ~ 2,000K yen (~ $18,180)

19 MICE Test Cryostat at KEK

20 Insert to Vacuum Chamber Pipes with MLI ~2 layers

21 Top view of cryostat Cryocooler H2 gas tank (2000 l) H2 press. transducer TMP Bendix 18 pin connector x2

22 MICE Test Absorber MLI Wrapped MLI layer Al-Mylar 9  x5 + Polyester Mesh x6 Window 1 layer Body 4 layers

23 H2 Press (Torr) n-H2 Temp.(K) e-H2 Temp.(K) Absorber Temp.(K) T (K) DAY

24 Super Fluid LHe Absorber R&D at KEK Superfluid L-He Absorber R&D at KEK

25 Superfluid L-He Absorber Absorber Test Cryostat Absorber 4.2K 1K Abs. Wedge Absorber (plan) 75  m Mylar Window Q~100W dT~0K

26 Cooling Power Test with S p =120 m 3 /hr L-He consumption (L/h)

27 Cooling Power of Superfluid He Absorber 6,000 m 3 /hr, ~ 100 W P x2 Sp x50 Superfluid L-He Target (S p =120 m 3 /hr, 1.0 W at 1.63 K)

28 60 mm 134 mm 200 mm 80 ° Mylar mm L-He Ⅱ 80 ° Superfluid L-He Absorber

29 Summary and Plan 1)MICE Absorber Design by KEK - KEK design finished 2) MICE Absorber Design by MIRAPRO - Restart absorber design and cost estimation - Order ~May, 08, + 3 month delivery to KEK 3) MICE Test Cryostat at KEK - Temperature controlled by Cryocooler heater 4) Superfluid L-He Absorber R&D at KEK - Test absorber was designed and fabricated

30 Thank You


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