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The angular resolution of the probe that the pixel size is 52 μm and the maximum detecting angle is 100 mrad.

The angular resolution of the probe that the pixel size is 52 μm and the maximum detecting angle is 100 mrad.

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Figure 6. The comparison of the twiss parameters. The difference is...
The angular resolution of the probe that the pixel size is 52 μm and...
Development of a Pepper Pot probe to measure the Four-dimensional emittance of low energy beam of electron cyclotron resonance ion source at IMP
Article
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  • Jan 2020
The ion beams extracted from an Electron Cyclotron Resonance (ECR) ion source always exist strong transverse coupling effect that is caused by the field of the axis mirror magnets and the extraction solenoid. In order to obtain the four-dimensional (4D) characteristic matrix with coupling elements, a Pepper Pot probe was developed and used to obtai...
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... distance of the Pepper Pot probe at IMP can be varied from 10 mm up to 40 mm. Table 1 shows the angler resolution for the different distance between the Pepper Pot mask and the scintillator screen. ...

Citations

... mm. Furthermore, in order to verify the reliability of measurement result, the twiss parameters (including alpha, beta, gama and emittance) and ellipse rotation angle analyzed by PEMiL were compared with those obtained by Allison scanners 5 . The results indicated that the total system error of PEMiL is lower than 20%. ...
Emittance study of the high intensity highly charged heavy ion beams extracted from electron cyclotron resonance ion source
Article
  • Jan 2020
  • REV SCI INSTRUM
According to the requirements of ion beams extracted from an electron cyclotron resonance ion source transverse phase space coupling research and the afterglow beam property effective measurement, a pepper pot type meter called PEMiL (Pepper Pot Emittance Meter in Lanzhou) has been designed, fabricated, and commissioned to obtain the emittance of high intensity highly charged heavy ion beams. The direct current beam emittance measurement results verify the coupling property caused by the semisolenoid field. This paper also describes the scheme of multiple exposure accumulation which was applied to measure the afterglow beam property, and the transverse phase space distribution of the oxygen afterglow beam which was measured for the first time is presented.
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