Momentum spread measurement method for the space charge-dominated ion beams

27 Oct 2025, 14:00
15m
Conference hall (MLIT)

Conference hall

MLIT

Oral Instruments and Methods of Experimental Physics Instruments and Methods of Experimental Physics

Speaker

Даниил Чумаков (ОИЯИ, НИ ТПУ)

Description

The evolution of charged particle distribution function is described by Fokker-Planck equation. The stationary solution of Vlasov-Fokker-Planck equation that takes into account space charge induced field and predicts the equilibrium line density of circulating bunch is the Haissinski equation. In this work we have described the method of rms momentum spread $σ_δ$ measurement from longitudinal bunched beam profiles obtained with fast current transformer on NICA Booster synchrotron. The method of transcendent Haissinski equation derivation for the fitting of data, as well as the evolution of momentum spread $σ_δ$ and space charge impedance $Z_∥/n$ for circulating Xe ions in the presence of electron cooling are demonstrated.

Author

Даниил Чумаков (ОИЯИ, НИ ТПУ)

Co-authors

Dr Валерий Лебедев (ОИЯИ) Владимир Шпаков (ОИЯИ) Антон Сергеев (ОИЯИ) Юрий Прокофьичев (ОИЯИ)

Presentation materials