wire scanner design
DESCRIPTION
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. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Wire Scanner Design](https://reader034.vdocument.in/reader034/viewer/2022042617/56815fd7550346895dced98d/html5/thumbnails/1.jpg)
![Page 2: Wire Scanner Design](https://reader034.vdocument.in/reader034/viewer/2022042617/56815fd7550346895dced98d/html5/thumbnails/2.jpg)
![Page 3: Wire Scanner Design](https://reader034.vdocument.in/reader034/viewer/2022042617/56815fd7550346895dced98d/html5/thumbnails/3.jpg)
Wire Scanner
scintillator + photomultiplier
![Page 4: Wire Scanner Design](https://reader034.vdocument.in/reader034/viewer/2022042617/56815fd7550346895dced98d/html5/thumbnails/4.jpg)
Different wire scanner generation
![Page 5: Wire Scanner Design](https://reader034.vdocument.in/reader034/viewer/2022042617/56815fd7550346895dced98d/html5/thumbnails/5.jpg)
Problems
• 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
![Page 6: Wire Scanner Design](https://reader034.vdocument.in/reader034/viewer/2022042617/56815fd7550346895dced98d/html5/thumbnails/6.jpg)
Problems
• 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
![Page 7: Wire Scanner Design](https://reader034.vdocument.in/reader034/viewer/2022042617/56815fd7550346895dced98d/html5/thumbnails/7.jpg)
Motor
![Page 8: Wire Scanner Design](https://reader034.vdocument.in/reader034/viewer/2022042617/56815fd7550346895dced98d/html5/thumbnails/8.jpg)
Motor Specification
•Brushless motor
• 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
![Page 9: Wire Scanner Design](https://reader034.vdocument.in/reader034/viewer/2022042617/56815fd7550346895dced98d/html5/thumbnails/9.jpg)
Inductosyn transducers
![Page 10: Wire Scanner Design](https://reader034.vdocument.in/reader034/viewer/2022042617/56815fd7550346895dced98d/html5/thumbnails/10.jpg)
Inductosyn transducers
![Page 11: Wire Scanner Design](https://reader034.vdocument.in/reader034/viewer/2022042617/56815fd7550346895dced98d/html5/thumbnails/11.jpg)
Inductosyn Specification
• points spaced at 384 microradians with a repetabililty of ± 24 microradians(possibility to reduce the repetability to ± 12 microradians with selection of a higer resolution transducer)
• Resist to high temperature ( 260 °C)
• very low outgassing
• number of bits would be between 16 and 19 (520 kHz)
![Page 12: Wire Scanner Design](https://reader034.vdocument.in/reader034/viewer/2022042617/56815fd7550346895dced98d/html5/thumbnails/12.jpg)
Motor control
![Page 13: Wire Scanner Design](https://reader034.vdocument.in/reader034/viewer/2022042617/56815fd7550346895dced98d/html5/thumbnails/13.jpg)
Motor control
A1
DAC1
A2
DAC2
A3
DAC3
M
ADC
V+
V-
V+
V-
V+
V-
DSP or µC
or FPGA