IBIC2017 - List of Authors (Nosych, A.A.)

Paper	Title	Page
MOPCC11	Diagnostics for Transverse Coupled Bunch Instabilities at ALBA	61
	U. Iriso, A.A. Nosych, A. Olmos, L. Torino ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	Transverse Couple Bunch Instabilities (TCBI) have been identified at ALBA as one of the main beam current limitations since its early commissioning in 2011. In these last years, we have developed several diagnostics tools that allow us a better characterization of these instabilities. The Synchrotron Radiation Interferometry has been equipped with a Fast Gated Camera (FGC) to measure the bunch-by-bunch beam size evolution, which, in combination with the diagnostics tools of the Transverse Multibunch Feedback system, provides us with a fruitful insight of these phenomena. This paper describes these diagnostics tools, and as an example, compares the emittance and tune evolution switching on/off some of the vacuum pumps at the Storage Ring.
	Poster MOPCC11 [0.215 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-MOPCC11
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MOPCC12	Upgrade of BPMs and SRMs for the BTS Transfer Line at ALBA	65
	U. Iriso, M. Alvarez, G. Benedetti, A.A. Nosych, A. Olmos, X.I. Rodriguez ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	The non-invasive diagnostics in the ALBA Booster-to-Storage (BTS) transfer consist of Beam Position Monitors (BPM) and Synchrotron Radiation Monitors (SRM), which together provide position, size and shape of the beam. However, they were not reliable enough for a systematic improvement of the transfer efficiency in the BTS, which has been fluctuating since day one. In order to optimize it, two major upgradse have been performed: first, the BPM electronics have been upgraded for single-pass beam detection, showing a factor 10 better position resolution than the former units. Secondly, the SRMs mechanics and automation were significantly improved to provide a more robust optics alignment. Both BPMs and SRMs are now routinely used to keep transmission efficiency along the BTS constant over weeks.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-MOPCC12
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TUPCF16	Stripline Beam Position Monitor Modelling and Simulations for Charge Measurements	247
	G. Castorina INFN-Roma1, Rome, Italy G. Franzini, B. Spataro INFN/LNF, Frascati (Roma), Italy M. Marongiu, A. Mostacci INFN-Roma, Roma, Italy A.A. Nosych ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	Strip line Beam Positions Monitors (BPMs) are the main devices used for non-intercepting position measurement for the electron LINAC of ELI-NP (Extreme Light Infrastructure - Nuclear Physics). All the 29 BPMs have the same design, with the exception of the one installed in one of the dump line, which has a much larger acceptance than the others. BPMs will also be used to measure the charge of the beam, by measuring the sum of the pickups signals and calibrating it with beam charge monitors installed along the LINAC. An analytical model has been developed for the proposed BPMs. This model has been checked by means of PIC/wakefield simulations, in order to obtain the pickups signals at the passage of the beam and to study the effects of BPMs non-linearities, particularly on charge measurements. Details of the analytical model, results of the numerical simulations and the correction algorithm proposed for charge measurements are described in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-TUPCF16
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Diagnostics for Transverse Coupled Bunch Instabilities at ALBA

61

U. Iriso, A.A. Nosych, A. Olmos, L. Torino
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

Transverse Couple Bunch Instabilities (TCBI) have been identified at ALBA as one of the main beam current limitations since its early commissioning in 2011. In these last years, we have developed several diagnostics tools that allow us a better characterization of these instabilities. The Synchrotron Radiation Interferometry has been equipped with a Fast Gated Camera (FGC) to measure the bunch-by-bunch beam size evolution, which, in combination with the diagnostics tools of the Transverse Multibunch Feedback system, provides us with a fruitful insight of these phenomena. This paper describes these diagnostics tools, and as an example, compares the emittance and tune evolution switching on/off some of the vacuum pumps at the Storage Ring.

Poster MOPCC11 [0.215 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-MOPCC11

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOPCC12

Upgrade of BPMs and SRMs for the BTS Transfer Line at ALBA

65

U. Iriso, M. Alvarez, G. Benedetti, A.A. Nosych, A. Olmos, X.I. Rodriguez
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

The non-invasive diagnostics in the ALBA Booster-to-Storage (BTS) transfer consist of Beam Position Monitors (BPM) and Synchrotron Radiation Monitors (SRM), which together provide position, size and shape of the beam. However, they were not reliable enough for a systematic improvement of the transfer efficiency in the BTS, which has been fluctuating since day one. In order to optimize it, two major upgradse have been performed: first, the BPM electronics have been upgraded for single-pass beam detection, showing a factor 10 better position resolution than the former units. Secondly, the SRMs mechanics and automation were significantly improved to provide a more robust optics alignment. Both BPMs and SRMs are now routinely used to keep transmission efficiency along the BTS constant over weeks.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-MOPCC12

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPCF16

Stripline Beam Position Monitor Modelling and Simulations for Charge Measurements

247

G. Castorina
INFN-Roma1, Rome, Italy
G. Franzini, B. Spataro
INFN/LNF, Frascati (Roma), Italy
M. Marongiu, A. Mostacci
INFN-Roma, Roma, Italy
A.A. Nosych
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

Strip line Beam Positions Monitors (BPMs) are the main devices used for non-intercepting position measurement for the electron LINAC of ELI-NP (Extreme Light Infrastructure - Nuclear Physics). All the 29 BPMs have the same design, with the exception of the one installed in one of the dump line, which has a much larger acceptance than the others. BPMs will also be used to measure the charge of the beam, by measuring the sum of the pickups signals and calibrating it with beam charge monitors installed along the LINAC. An analytical model has been developed for the proposed BPMs. This model has been checked by means of PIC/wakefield simulations, in order to obtain the pickups signals at the passage of the beam and to study the effects of BPMs non-linearities, particularly on charge measurements. Details of the analytical model, results of the numerical simulations and the correction algorithm proposed for charge measurements are described in this paper.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-TUPCF16

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)