| Paper |
Title |
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| MOCO03 |
Estimation of Longitudinal Profiles of Ion Bunches in the LHC Using Schottky-Based Diagnostics |
45 |
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- K. Łasocha, D. Alves
CERN, Meyrin, Switzerland
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The Large Hadron Collider (LHC) Schottky monitors have been designed to measure various parameters of relevance to beam quality, namely tune, momentum spread and chromaticity. We present another application of this instrument - the evaluation of longitudinal bunch profiles. The relation between the distribution of synchrotron amplitudes within the bunch population and the longitudinal bunch profile is derived from probabilistic principles. Our approach, limited to bunched beams with no intra-bunch coherent motion, initially fits the cumulative power spectral density of acquired Schottky spectra with the underlying distribution of synchrotron amplitudes. The result of this fit is then used to reconstruct the bunch profile using the derived model. The results obtained are verified by a comparison with measurements from the LHC Wall Current Monitors.
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Slides MOCO03 [48.066 MB]
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2019-MOCO03
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| About • |
paper received ※ 04 September 2019 paper accepted ※ 08 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
|
|
| About • |
paper received ※ 09 September 2019 paper accepted ※ 10 September 2019 issue date ※ 10 November 2019 |
|
| Export • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
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