MO2AB1
GSI, Darmstadt, Germany
CERN, Geneva, Switzerland
GSI, Darmstadt, Germany
GSI, Darmstadt, Germany
CERN, Geneva, Switzerland
Cockcroft Institute, Warrington, Cheshire, United Kingdom
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MO2AB1 |
Beam Measurements Using Schottky Signal Analysis | |
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| Schottky signal analysis is a non-invasive beam measurement method based on the observation of the electromagnetic properties of individual beam particles. It allows the determination of important parameters such as momentum spread, synchrotron tune, coherent and incoherent betatron tune, and chromaticity for coasting and bunched beams at hadron synchrotrons. It is a popular diagnostic at low energy ion storage rings as well as implemented for bunched beams in high energy synchrotrons such as LHC. In this tutorial, the underlying physics for the observables will be described together with the basic mathematics. Recent results for high intensity beam will be discussed. The detector technology, based on capacitive pick-ups, traveling wave structures, or cavities is addressed, as well as the associated rf electronics to extract this weak, beam induced Schottky signal. Applications ranging from the daily operational usage up to dedicated machine physics investigations on a very wide range of beam parameters will be discussed. | ||
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Slides MO2AB1 [13.493 MB] | |
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| WEPCC07 | A Modular Application for IPM Simulations | 355 |
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| Simulating the electron and ion tracking in Ionization Profile Monitors is an important tool for specifying and designing new monitors. It is also essential for understanding the effects related to the ionization process, guiding field non-uniformities and influence of the beam fields which may lead to a distortion of measured profiles. Existing simulation codes are often tuned to the specific needs of a laboratory, are not well documented and lack a practical user interface. This work presents a generic simulation tool which combines the features of existing codes in order to provide a common standard for IPM simulations. The modular structure of the application allows for exchanging the computational modules depending on the use case and makes it extensible to new use cases. By this means simulations of Beam Induced Fluorescence monitors based on supersonic gas jets have been realized. The application and all involved methods have been tested and benchmarked against existing results. The code is well documented and includes a graphical user interface. It is publicly available as a git repository and as a Python package. | ||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-WEPCC07 | |
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| WEPCC08 | Development of a Fluorescence Based Gas Sheet Profile Monitor for Use With Electron Lenses: Optical System Design and Preparatory Experiments | 359 |
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| A hollow electron lens is presently under study as a possible addition to the collimation system for the high luminosity upgrade of the LHC (HL-LHC), while an electron lens system is also proposed for space charge compensation in the SIS-18 synchrotron for the high intensities at the future FAIR facility. For effective operation, a precise alignment is necessary between the high energy hadron beam and the low energy electron beam. In order to achieve this, a beam diagnostics setup based on an intersecting gas sheet and the observation of beam-induced fluorescence is under development. In this contribution we give an account of the design and performance of the optical detection system and report on recent preparatory experiments performed using a laboratory gas curtain Setup. | ||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-WEPCC08 | |
| Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |