The Longitudinal Broadband Impedance and Energy Spread Measurements at the VEPP-4M Electron-Positron Collider | Sciact - CRIS-system of Boreskov Institute of Catalysis

The Longitudinal Broadband Impedance and Energy Spread Measurements at the VEPP-4M Electron-Positron Collider Conference Abstracts

Conference

8th International Particle Accelerator Conference
14-19 May 2017 , Copenhagen

Source

Proceedings of the 8th International Particle Accelerator Conference
Compilation, JACoW. 2017. 4860 c. ISBN 978-3-95450-182-3.

Output data

Year: 2017, Article number : WEPIK081, Pages count : 3 DOI: 10.18429/JACoW-IPAC2017-WEPIK081

Authors

Borin V.M. ^1,2 , Dorokhov V.L. ¹ , Kiselev V.A. ¹ , Kurkin G.Y. ¹ , Meshkov O.I. ^1,2 , Nikitin S.A. ¹ , Piminov P.A. ¹ , Sinyatkin S.V. ¹

Affiliations

1	Budker Institute of Nuclear Physics, Novosibirsk, Russia
2	Novosibirsk State University, Novosibirsk, Russia

The paper presents measurements of the longitudinal broadband impedance and beam energy spread of the beam at the VEPP-4M electron-positron collider in an energy range of 1.0 – 3.5 GeV. In order to measure the longitudinal bunch size at various beam currents we used “PS-1/S1” streak camera with picosecond temporal resolution. The dependence of bunch length from the bunch current at different energies demonstrates a microwave instability threshold. The bunch lengthening was caused by potential well distortion as well. Potential well distortion lengthening was used to estimate a value of the reactive part of the longitudinal impedance of the vacuum chamber of the collider. Observed microwave instability thresholds was used to measure the value of the broadband impedance. The impact of the Touschek effect in the beam energy spread is discussed.

Borin V.M. , Dorokhov V.L. , Kiselev V.A. , Kurkin G.Y. , Meshkov O.I. , Nikitin S.A. , Piminov P.A. , Sinyatkin S.V.
The Longitudinal Broadband Impedance and Energy Spread Measurements at the VEPP-4M Electron-Positron Collider
In compilation Proceedings of the 8th International Particle Accelerator Conference. – JACoW., 2017. – C.3117-3119. – ISBN 978-3-95450-182-3. DOI: 10.18429/JACoW-IPAC2017-WEPIK081 OpenAlex

OpenAlex:

W2912777135

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