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Wire Scanner Design

New Wire Scanner Design. Wire Scanner Design. Wire Scanner . Wire Scanner Design. scintillator + photomultiplier . Different wire scanner generation. Wire Scanner Design. Problems. Wire Scanner Design. Wires breaking due to beam interaction.

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Wire Scanner Design

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  1. New Wire Scanner Design Wire Scanner Design

  2. Wire Scanner Wire Scanner Design scintillator + photomultiplier

  3. Different wire scanner generation Wire Scanner Design

  4. Problems Wire Scanner Design • Wires breaking due to beam interaction. • Instabilities of position and profile measurements due to: • Inaccuracy of position measurements. • Flexibility, vibrations in mechanics and wire (in some cases). • Outgassing bellows • Wire vibrations

  5. Problems Wire Scanner Design • Wires breaking due to beam interaction. • Instabilities of position and profile measurements due to: • Inaccuracy of position measurements. • Flexibility, vibrations in mechanics and wire (in some cases). • Outgassing bellows

  6. Motor Wire Scanner Design

  7. Motor Specification Wire Scanner Design • Brushlessmotor • Acceleration (from parking position to 200 radians/sec in ¼ turn): 12 800 rads/s² • Rotor inertia of the shaft and wire stretching fork: < 2.0x10-4 kg.m2 • Inertia of the position transducer: < 1.0x10-4 kg.m2 • Minimum vacuum chamber thickness between stator and rotor: 1.5 mm • Operating pressure: <10-7 Pa

  8. Inductosyntransducers Wire Scanner Design

  9. Inductosyntransducers Wire Scanner Design

  10. Inductosyn Specification Wire Scanner Design • points spacedat 384 microradians with a repetabililty of ± 24 microradians • (possibility to reduce the repetability to ± 12 microradians withselection of a higerresolutiontransducer) • Resist to hightemperature ( 260 °C) • verylowoutgassing • number of bits wouldbebetween 16 and 19 (520 kHz)

  11. Motor control Wire Scanner Design

  12. Motor control Wire Scanner Design V+ A1 A2 A3 DAC2 DAC3 DAC1 ADC V- V+ DSP or µC or FPGA M V- V+ V-

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