Absorber Production Status Contents (1)MICE absorber design/status (2)MICE absorber instrumentation (3)Schedule (4)Summary Sasanqua at KEK on 13-DEC,’09.

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Presentation transcript:

Absorber Production Status Contents (1)MICE absorber design/status (2)MICE absorber instrumentation (3)Schedule (4)Summary Sasanqua at KEK on 13-DEC,’09 Shigeru Ishimoto KEK MICE CM23, HIT in Harbin China, Jan, 2009

machining after welding heater 2 test flanges

Body; cut from single Al-block oversize before finishing

Pipe-welding support flange

Tee and 30 pin feedthrough In seal Kyocera 30 pin feedthrough LH2 In to absorber

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  From Absorber Small flange and G-10 support

Flange of MICE absorber Design window; Oxford Design flange; KEK Machining ; Mississippi Tolerance between flange and body: mm

Flange-Body Tolerance In 1.0 Gap 0.5

Prototype absorber test at KEK

10 Cernox 1050SD Calibrated K 4 wires; AB101, 102, 105, 109,110 2 wires; AB103,104,106,107,108 (Total 5*4 + 5*2 = 30 wires) I m =0.1 mA; 101,103,105,107,109 I m =1 mA; 102,104,106,108,110 Temperature & level sensors in the absorber In LH2 over heating mode in gas

Sensor and heater (overall) HTR-25  -100W 25.4 VAC. tight VAC/LT tight

CX-1050-SD Sensor blocks 2 cernox inside absorber cernox for L-H2 pipes cernox for L-N2 pipes or 4 x 0.14 mm2 ETFE cable X 5 X 2

Instrumentation Temperature Readout Lake Shore Thermometer Readout 218S 8 Cernox (4 inside, 4 outside) Heater controller Lake Shore Heater controller 332S 1 Cernox (bottom) + 1 Heater ( 1 spare) Over Current Readout (LH2 Level Sensor) DC PS (constant current); 0 – 1 mA(max) Keithley 2700 DMM; 20 CH 5 Cernox (5 inside) + 2 Heater Volts X 1 X 1 set

Status of Absorber parts (*) Thank Mike for supplying Cernoxes (Yoshitaka, Makoto and Shigeru)

Test Area will move to North-CH Absorber Schedule 12-Mar MIRAPRO

Summary (1)Ordering of the first absorber body was delayed 2-3 month from original expectation. It will make tight schedule of preparation and test at KEK. (2)Thermometer/level sensors inside and outside absorber body were ordered by LBNL to save extra cost. Thanks again! (3)Other parts will arrive at KEK by March (4)Thin absorber flanges will be set at KEK. First flanges will be arrived from Univ. of Mississippi.