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F. Garnier, P-A. Giudici, F.Bergsma CERN MICE Collaboration Meeting No. 28 Absorber Systems & MICE Magnets Session 6 October 2010 technical drawings by.

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Presentation on theme: "F. Garnier, P-A. Giudici, F.Bergsma CERN MICE Collaboration Meeting No. 28 Absorber Systems & MICE Magnets Session 6 October 2010 technical drawings by."— Presentation transcript:

1 F. Garnier, P-A. Giudici, F.Bergsma CERN MICE Collaboration Meeting No. 28 Absorber Systems & MICE Magnets Session 6 October 2010 technical drawings by O.Jamet Magnet Measurement Device for MICE

2 Servo motor with encoder Tooth belt Trolley with B-sensors Support by tripods Support by adjustment screws on cradles Rails Cradles Magnet bore ¼ pipe of aluminum Layout

3 ¼ pipe of aluminum Rails Cradle Magnet bore Disk with 7 B-sensors calibrated at 4.5 Tesla Axis of rotation 5 degree steps 5 m

4 5m version for spectrometer solenoids 2m version for focus absorber solenoids. Extension disk to by-pass internal flange AFC Need to measure from both sides 2m version could be used to measure eventually coupling coils Extension disk for AFC 2 versions Irremovable flange

5 B-sensor cardStack of B-sensors in calibrator Passive backplane for B-sensor to carry double-row connector Daisy chain B-sensors Double row flat- cable connector Single-row 10 pin connector SPI-interface Homogeneous field region is small => need high density => single row connector Glass cube with 3 Hall probes frontback F.Bergsma/CERN IMMW165 thermistor Feet tolerance 50 µm

6 IMMW15 F.Bergsma6 130 mm Calibration done at GHMFL Grenoble B max =4.5 Tesla

7 Mounting of B-sensors

8 Measurement grid Disk can rotate in steps of 5 degree 180 mm sensor has to be removed for this region

9

10 DAQ + control SPI -> RS232 interface, SPI-bus with 7 slots Where to put interface: inside or outside 4 Tesla? Leave both options open DAQ program (MSVC) runs on PC (laptop) BALDOR servo engine with NextMove ESB motion controller ESB connected with CANbus to PC

11 mechanics: 1 build 5 m version, test precision 2 if precision insufficient add encoder, foresee laser tracker during measurements 3 build 2 m version DAQ: Build simple read-out for 7 B-sensors Anticipate to have interface outside high field region Accuracy: Better than 0.5 mm longitudinal +/- 0.1mm radial +/- 1 mrad directive Bx,By,Bz +/- 2 mT Check in situ with NMR Surveying done at CERN with laser tracker STRATEGY

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