Sub-micrometer transverse beam size diagnostics using optical transition radiation

Kruchinin, Konstantin; Aryshev, Alexander; Karataev, P.; Bolzon, B.; Lefèvre, T.; Mazzoni, Stefano; Shevelev, M.; Boogert, Stewart; Nevay, Laurence; Terunuma, N.; Urakawa, J.

doi:10.1088/1742-6596/517/1/012011

Cited by 7 publications

(17 citation statements)

References 5 publications

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“…The reference value provided by OTR is calculated by the procedure presented in Ref. [43]. This allows us to establish a relation between the visibility (which we define in the present section) of the ODR pattern and the transverse beam size.…”

Section: B Otr Calibrationmentioning

confidence: 99%

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Noninvasive Micrometer-Scale Particle-Beam Size Measurement Using Optical Diffraction Radiation in the Ultraviolet Wavelength Range

et al. 2020

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We present recent achievements in the application of optical diffraction radiation (ODR) to the measurement of the transverse beam size of a 1.3 GeV micrometer-size electron beam performed with an instrument installed in the extended extraction line of the KEK Accelerator Test Facility. ODR is a recent technique for the measurement of the transverse size and emittance of highly relativistic particle beams. ODR has the advantage of being a noninvasive and relatively inexpensive technique and is a candidate for the operation of linear particle accelerators, where no simple alternatives (e.g., synchrotron radiation) are available. In an effort to improve the resolution and performance, we establish an alternative target microfabrication technology, adopt solutions to improve the signal-to-noise ratio, and perform an experiment in the UV spectrum at 250 nm. With such a configuration, a transverse beam size as low as 3 μm is measured, drastically improving on past measurements reported in the literature. In light of these results, ODR, when combined with a high-resolution optical-transition-radiation monitor, represents a credible diagnostics solution for low-emittance high-intensity particle beams.

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Section: B Otr Calibrationmentioning

confidence: 99%

“…A procedure similar to the one described in Refs. [43,44] is applied to extract the beam size. In particular, an automated quadrupole scan is performed with the QM14 magnet: the current is varied over a large range (from −90 to −50 A), and for each step of the current an image of the OTR is recorded.…”

Section: B Otr Calibrationmentioning

confidence: 99%

Noninvasive Micrometer-Scale Particle-Beam Size Measurement Using Optical Diffraction Radiation in the Ultraviolet Wavelength Range

et al. 2020

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“…Simulations have been performed for three different lenses with the same diameter of 30 mm and focal length of 100 mm, providing the same optical magnification of 7.4. The plano-convex lens, SLB-30-100-PY2 from Sigma-Koki, that was used in the first version of the OTR imaging system installed on ATF2 [8] has been taken as a reference for comparison. Simulations using either a visible achromatic doublet lens, DLB-30-100-PM from Sigma-Koki, or an UV achromatic doublet lens 027-3020 from OptoSigma, have been performed and the results are presented in Fig.…”

Section: Optimization Of the Lensmentioning

confidence: 99%

“…Beam sizes smaller than 3 μm sigma can be measured using the visibility of the PSF [8]. The transverse distribution of the OTR point spread function as described in more detail in Sec.…”

Section: Measuring Beam Size With Otrmentioning

confidence: 99%

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Very high resolution optical transition radiation imaging system: Comparison between simulation and experiment

Bolzon

Aryshev

Aumeyr

et al. 2015

Phys. Rev. ST Accel. Beams

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Optical transition radiation (OTR) has become a commonly used method for 2D beam imaging measurements. In the Accelerator Test Facility 2 (ATF2) at KEK, beam sizes smaller than the OTR point spread function have been measured. Simulations of the OTR imaging system have been performed using the ZEMAX software to study the effects of optical errors such as aberrations, diffraction, and misalignments of optical components. This paper presents a comparison of simulations of the OTR point spread function with experimental data obtained at ATF2. It shows how the quantification and control of optical errors impacts on optimizing the resolution of the system. We also show that the OTR point spread function needs to be predicted accurately to optimize any optical system and to predict the error made on measurement.

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Simulation of wire scanner for high repetition free electron laser facilities

Wan

Leng

Gao

et al. 2022

Nuclear Instruments and Methods in Physics Research Section A:

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Sub-micrometer transverse beam size diagnostics using optical transition radiation

Cited by 7 publications

References 5 publications

Noninvasive Micrometer-Scale Particle-Beam Size Measurement Using Optical Diffraction Radiation in the Ultraviolet Wavelength Range

Noninvasive Micrometer-Scale Particle-Beam Size Measurement Using Optical Diffraction Radiation in the Ultraviolet Wavelength Range

Very high resolution optical transition radiation imaging system: Comparison between simulation and experiment

Simulation of wire scanner for high repetition free electron laser facilities

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