eeFACT2018 - List of Authors (Zobov, M.)

Paper	Title	Page
MOYAA02	Status of DAΦNE: from KLOE-2 to SIDDHARTA-2 Experiment with Crab-Waist	23
	C. Milardi, D. Alesini, S. Bini, O.R. Blanco-García, M. Boscolo, B. Buonomo, S. Cantarella, S. Caschera, A. D’Uffizi, A. De Santis, G.O. Delle Monache, D.G.C. Di Giulio, G. Di Pirro, A. Drago, L.G. Foggetta, A. Gallo, R. Gargana, A. Ghigo, S. Guiducci, S. Incremona, F. Iungo, C. Ligi, M. Maestri, A. Michelotti, L. Pellegrino, R. Ricci, U. Rotundo, L. Sabbatini, C. Sanelli, G. Sensolini, A. Stecchi, A. Stella, A. Vannozzi, M. Zobov INFN/LNF, Frascati, Italy G. Castorina INFN-Roma1, Rome, Italy J. Chavanne, G. Le Bec, P. Raimondi ESRF, Grenoble, France
	Dafne, the Italian lepton collider, is running since more than a decade thanks to a radical revision of the approach used to deal with the beam-beam interaction: the Crab-Waist collision scheme. In this context, the collider has recently completed a long term activity program aimed at providing an unprecedented sample of data to the KLOE-2 detector, a large experimental apparatus including a high intensity solenoidal field strongly perturbing ring optics and beam dynamics. The KLOE-2 run has been undertaken with the twofold intend of collecting data for rare decay flavor physics studies, and testing the effectiveness of the new collision scheme in the presence of a strongly perturbing experimental apparatus. The performances of the collider are reviewed and the limiting factors discussed along with the preparatory phase activities planned to secure a new collider run to the SIDDHARTA-2 experiment.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-MOYAA02
About •	paper received ※ 20 October 2018 paper accepted ※ 19 February 2019 issue date ※ 21 April 2019
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TUYAA01	High Currents Effects in DAΦNE	82
	C. Milardi, D. Alesini, A. Drago, A. Gallo, A. Ghigo, S. Guiducci, M. Serio, A. Stella, M. Zobov INFN/LNF, Frascati, Italy P. Raimondi ESRF, Grenoble, France
	DAΦNE, the Italian lepton collider, operates routinely with high intensity electron and positron colliding beams. The high current multi-bunch beams are stored in two independent rings, each of them 97 m long, and are distributed in 100 ’ 110 contiguous buckets out of the 120 available, spaced by only 2.7 ns. Since its construction, DAΦNE has been operated in different configurations which, overall, allowed to store current up to 1.4 A and 2.45 A in the positron and in the electron beam respectively. Still today DAΦNE holds the record for the highest electron beam current ever stored in particle factories and modern synchrotron radiation sources. The DAΦNE experience in terms of beam dynamics optimization aimed at achieving the high intensity beams is presented, with special emphasis on the e-cloud related issues, which represent the dominant effect limiting the positron beam current.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-TUYAA01
About •	paper received ※ 24 October 2018 paper accepted ※ 19 February 2019 issue date ※ 21 April 2019
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WEOAB04	Single Bunch Instabilities and NEG Coating for FCC-ee	234
	E. Belli Sapienza University of Rome, Rome, Italy P. Costa Pinto, G. Rumolo, A. Sapountzis, T.F. Sinkovits, M. Taborelli CERN, Geneva, Switzerland M. Migliorati INFN-Roma1, Rome, Italy M. Zobov INFN/LNF, Frascati, Italy
	The high luminosity electron-positron collider FCC-ee is part of the Future Circular Collider (FCC) study at CERN and it has been designed to cover the beam energy range from 45.6 GeV to 182.5 GeV to study the properties of the Higgs boson and other particles. Electron cloud build up simulations on the Z resonance revealed the necessity of minimising the Secondary Electron Yield (SEY) of the pipe walls by applying a Ti-Zr-V Non-Evaporable Getter (NEG) coating in the entire ring. Beam dynamics simulations at 45.6 GeV pointed out that minimising the thickness of this layer is mandatory to reduce the resistive wall (RW) impedance, thus increasing the single bunch instability thresholds and ensuring beam stability during operation. However, reducing the coating thickness can affect the performance of the material and therefore the SEY. For this reason, an extensive measurement campaign was performed at CERN to characterise NEG thin films with thicknesses below 250 nm in terms of activation performance and SEY measurements. This paper also presents the FCC-ee longitudinal impedance model which includes all the current machine components.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-WEOAB04
About •	paper received ※ 12 November 2018 paper accepted ※ 19 February 2019 issue date ※ 21 April 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Status of DAΦNE: from KLOE-2 to SIDDHARTA-2 Experiment with Crab-Waist

23

C. Milardi, D. Alesini, S. Bini, O.R. Blanco-García, M. Boscolo, B. Buonomo, S. Cantarella, S. Caschera, A. D’Uffizi, A. De Santis, G.O. Delle Monache, D.G.C. Di Giulio, G. Di Pirro, A. Drago, L.G. Foggetta, A. Gallo, R. Gargana, A. Ghigo, S. Guiducci, S. Incremona, F. Iungo, C. Ligi, M. Maestri, A. Michelotti, L. Pellegrino, R. Ricci, U. Rotundo, L. Sabbatini, C. Sanelli, G. Sensolini, A. Stecchi, A. Stella, A. Vannozzi, M. Zobov
INFN/LNF, Frascati, Italy
G. Castorina
INFN-Roma1, Rome, Italy
J. Chavanne, G. Le Bec, P. Raimondi
ESRF, Grenoble, France

Dafne, the Italian lepton collider, is running since more than a decade thanks to a radical revision of the approach used to deal with the beam-beam interaction: the Crab-Waist collision scheme. In this context, the collider has recently completed a long term activity program aimed at providing an unprecedented sample of data to the KLOE-2 detector, a large experimental apparatus including a high intensity solenoidal field strongly perturbing ring optics and beam dynamics. The KLOE-2 run has been undertaken with the twofold intend of collecting data for rare decay flavor physics studies, and testing the effectiveness of the new collision scheme in the presence of a strongly perturbing experimental apparatus. The performances of the collider are reviewed and the limiting factors discussed along with the preparatory phase activities planned to secure a new collider run to the SIDDHARTA-2 experiment.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-MOYAA02

About •

paper received ※ 20 October 2018 paper accepted ※ 19 February 2019 issue date ※ 21 April 2019

Export •

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

TUYAA01

High Currents Effects in DAΦNE

82

C. Milardi, D. Alesini, A. Drago, A. Gallo, A. Ghigo, S. Guiducci, M. Serio, A. Stella, M. Zobov
INFN/LNF, Frascati, Italy
P. Raimondi
ESRF, Grenoble, France

DAΦNE, the Italian lepton collider, operates routinely with high intensity electron and positron colliding beams. The high current multi-bunch beams are stored in two independent rings, each of them 97 m long, and are distributed in 100 ’ 110 contiguous buckets out of the 120 available, spaced by only 2.7 ns. Since its construction, DAΦNE has been operated in different configurations which, overall, allowed to store current up to 1.4 A and 2.45 A in the positron and in the electron beam respectively. Still today DAΦNE holds the record for the highest electron beam current ever stored in particle factories and modern synchrotron radiation sources. The DAΦNE experience in terms of beam dynamics optimization aimed at achieving the high intensity beams is presented, with special emphasis on the e-cloud related issues, which represent the dominant effect limiting the positron beam current.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-TUYAA01

About •

paper received ※ 24 October 2018 paper accepted ※ 19 February 2019 issue date ※ 21 April 2019

Export •

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

WEOAB04

Single Bunch Instabilities and NEG Coating for FCC-ee

234

E. Belli
Sapienza University of Rome, Rome, Italy
P. Costa Pinto, G. Rumolo, A. Sapountzis, T.F. Sinkovits, M. Taborelli
CERN, Geneva, Switzerland
M. Migliorati
INFN-Roma1, Rome, Italy
M. Zobov
INFN/LNF, Frascati, Italy

The high luminosity electron-positron collider FCC-ee is part of the Future Circular Collider (FCC) study at CERN and it has been designed to cover the beam energy range from 45.6 GeV to 182.5 GeV to study the properties of the Higgs boson and other particles. Electron cloud build up simulations on the Z resonance revealed the necessity of minimising the Secondary Electron Yield (SEY) of the pipe walls by applying a Ti-Zr-V Non-Evaporable Getter (NEG) coating in the entire ring. Beam dynamics simulations at 45.6 GeV pointed out that minimising the thickness of this layer is mandatory to reduce the resistive wall (RW) impedance, thus increasing the single bunch instability thresholds and ensuring beam stability during operation. However, reducing the coating thickness can affect the performance of the material and therefore the SEY. For this reason, an extensive measurement campaign was performed at CERN to characterise NEG thin films with thicknesses below 250 nm in terms of activation performance and SEY measurements. This paper also presents the FCC-ee longitudinal impedance model which includes all the current machine components.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2018-WEOAB04

About •

paper received ※ 12 November 2018 paper accepted ※ 19 February 2019 issue date ※ 21 April 2019

Export •

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