Paper |
Title |
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TUPP038 |
Spatial Resolution of an X-ray Pinhole Camera using a Multi-layer Monochromator |
417 |
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- L. Bobb, G. Rehm
DLS, Oxfordshire, United Kingdom
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X-ray pinhole cameras are widely used for beam emittance monitoring at synchrotron light sources. Due to the reduction in beam emittance expected for the many fourth generation machine upgrades, the spatial resolution of the pinhole camera must be improved accordingly. It is well known that there are many contributions to the point spread function. However, a significant contribution arises from diffraction by the pinhole aperture. Given that diffraction is dependent on the spectral distribution of the incident synchrotron radiation, the spatial resolution can be improved by using a monochromatic beam. For optimal performance, the photon energy should be matched to the pinhole aperture size. Here we investigate the spatial resolution of the pinhole camera as a function of photon energy using a multi-layer monochromator.
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Poster TUPP038 [0.617 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2019-TUPP038
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About • |
paper received ※ 04 September 2019 paper accepted ※ 09 September 2019 issue date ※ 10 November 2019 |
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WEPP037 |
First Measurements of Cherenkov-Diffraction Radiation at Diamond Light Source |
624 |
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- D.M. Harryman, P. Karataev
JAI, Egham, Surrey, United Kingdom
- M. Apollonio, L. Bobb
DLS, Oxfordshire, United Kingdom
- M. Bergamaschi, R. Kieffer, M. Krupa, T. Lefèvre, S. Mazzoni
CERN, Geneva, Switzerland
- A. Potylitsyn
TPU, Tomsk, Russia
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Cherenkov Diffraction Radiation (ChDR), appearing when a charged particle moves in the vicinity of a dielectric medium with speed faster than the speed of light inside the medium, is a phenomenon that can be exploited for a range of non-invasive beam diagnostics. By using dielectric radiators that emit photons when in proximity to charged particle beams, one can design devices to measure beam properties such as position, direction and size. The Booster To Storage-ring (BTS) test stand at Diamond Light Source provides a 3 GeV electron beam for diagnostics research. A new vessel string has been installed to allow the BTS test stand to be used to study ChDR diagnostics applicable for both hadron and electron accelerators. This paper will discuss the commissioning of the BTS test stand, as well as exploring the initial results obtained from the ChDR monitor.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2019-WEPP037
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About • |
paper received ※ 04 September 2019 paper accepted ※ 09 September 2019 issue date ※ 10 November 2019 |
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THAO01 |
Cherenkov Diffraction Radiation as a tool for beam diagnostics |
660 |
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- T. Lefèvre, D. Alves, M. Bergamaschi, A. Curcio, O.R. Jones, R. Kieffer, S. Mazzoni, N. Mounet, A. Schlogelhofer, E. Senes
CERN, Geneva, Switzerland
- M. Apollonio, L. Bobb
DLS, Oxfordshire, United Kingdom
- A. Aryshev, N. Terunuma
KEK, Ibaraki, Japan
- M.G. Billing, Y.L. Bordlemay Padilla, J.V. Conway, J.P. Shanks
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
- V.V. Bleko, S.Yu. Gogolev, A.S. Konkov, J.S. Markova, A. Potylitsyn, D.A. Shkitov
TPU, Tomsk, Russia
- K.V. Fedorov, D.M. Harryman, P. Karataev, K. Lekomtsev
JAI, Egham, Surrey, United Kingdom
- J. Gardelle
CEA, LE BARP cedex, France
- K. Łasocha
Jagiellonian University, Kraków, Poland
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During the last three years, the emission of Cherenkov Diffraction Radiation (ChDR), appearing when a relativistic charged particle moves in the vicinity of a dielectric medium, has been investigated with the aim of providing non-invasive beam diagnostics. ChDR has very interesting properties, with a large number of photons emitted in a narrow and well-defined solid angle, providing excellent conditions for detection with very little background. This contribution will present a collection of recent beam measurements performed at several facilities such as the Cornell Electron Storage Ring, the Advanced Test Facility 2 at KEK, the Diamond light source in the UK and the CLEAR test facility at CERN. Those results, complemented with simulations, suggest that the use of both incoherent and coherent emission of Cherenkov diffraction radiation could open up new beam instrumentation possibilities for relativistic charged particle beams.
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Slides THAO01 [10.658 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2019-THAO01
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About • |
paper received ※ 09 September 2019 paper accepted ※ 10 September 2019 issue date ※ 10 November 2019 |
|
Export • |
reference for this paper using
※ BibTeX,
※ LaTeX,
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