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RIS citation export for TUPPM2R1: Laser cooling of bunched O⁵⁺ ion beams at the CSRe: investigation of coherent effect and extraction of momentum distribution from Schottky spectrum

TY  - UNPB
AU  - Wang, H.B.
AU  - Bussmann, M.H.
AU  - Chen, D.Y.
AU  - Huang, Z.
AU  - Kiefer, D.
AU  - Klammes, S.
AU  - Löser, M.
AU  - Ma, X.
AU  - Mao, L.J.
AU  - Schramm, U.
AU  - Siebold, M.
AU  - Walther, T.
AU  - Wen, W.Q.
AU  - Winters, D.F.A.
AU  - Wu, J.X.
AU  - Yang, J.C.
AU  - Yuan, Y.J.
AU  - Zhang, D.
AU  - Zhang, S.F.
ED  - Tranquille, Gérard Alain
ED  - Schaa, Volker RW
ED  - Petit-Jean-Genaz, Christine
ED  - Jørgensen, Lars Varming
TI  - Laser cooling of bunched O⁵⁺ ion beams at the CSRe: investigation of coherent effect and extraction of momentum distribution from Schottky spectrum
J2  - presented at COOL2023, Montreux, Switzerland, 08-13 October 2023
CY  - Montreux, Switzerland
T2  - International Workshop on Beam Cooling and Related Topics
T3  - 14
LA  - english
AB  - Laser cooling of O⁵⁺ ion beams with an energy of 275.7 MeV/u was achieved at the storage ring CSRe in Lanzhou, China. In the experiment, the momentum distribution was measured by the Schottky resonator. Besides, a multi-particle tracking method has been developed to simulate the Schottky spectra of bunched ion beams. We systematically studied the dependence of the Schottky power on the number of stored ions at different bunching and observation harmonics. The central peak is coherently enlarged only when the observation harmonic is an integer multiple of the bunching harmonic. The reason is that the randomness of the phase for each ion disappears at this condition, thus all ions coherently contribute to the Schottky power (Pcenter-N²). Therefore, the greatly enhanced central peak, caused by the "coherent effect", has been fully interpreted for the first time. Besides, we propose a new method to extract the momentum distribution from the Schottky spectrum of the bunched ion beams. Unlike the previously used methods, this is a very simple and precise way to obtain momentum distribution in real-time for bunched ion beams during beam cooling experiments.
ER  -