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1–6 Jun 2025
Taipei International Convention Center (TICC)
Asia/Taipei timezone

Quadrupole pumping for bunch shortening in the Proton Synchrotron and Super Proton Synchrotron at CERN

WEPS028
4 Jun 2025, 16:00
2h
Exhibiton Hall A _Salmon (TWTC)

Exhibiton Hall A _Salmon

TWTC

Poster Presentation MC5.D09 Emittance manipulation, Bunch Compression and Cooling Wednesday Poster Session

Speaker

Jake Flowerdew (European Organization for Nuclear Research)

Description

Quadrupole pumping is a longitudinal manipulation technique for bunch shortening, which works by modulating the RF voltage at twice the synchrotron frequency to excite bunch length oscillations. These controlled oscillations rotate the bunch in longitudinal phase space, with extraction set for when the bunch is shortest. Higher RF harmonics can also be used to linearise the synchrotron frequency distribution, reducing the formation of tails. Recently, quadrupole pumping has been proposed as a method for achieving ultra short bunches for proton-driven plasma wakefield accelerators such as the AWAKE experiment. In this contribution, we assess the performance of quadrupole pumping for the first time in the Proton Synchrotron (PS) and Super Proton Synchrotron (SPS) at CERN. Using simulations and beam measurements, we compare the effectiveness of this technique (without linearisation) against other bunch-shortening methods, including the unstable phase jump and the non-adiabatic voltage jump.

Region represented Europe
Paper preparation format LaTeX

Author

Jake Flowerdew (European Organization for Nuclear Research)

Co-authors

Alexandre Lasheen (European Organization for Nuclear Research) Heiko Damerau (European Organization for Nuclear Research) Ivan Karpov (European Organization for Nuclear Research) Ruben Heine (European Organization for Nuclear Research)

Presentation materials

There are no materials yet.