LINAC2026 - 33rd Linear Accelerator Conference

Estimation of BSM resolution in the Fermilab Linac

Not scheduled

2h

Daejeon Convention Center

Poster Presentation MC4.A01: Beam diagnostics Poster Session

Speaker

Ralitsa Sharankova (Fermi National Accelerator Laboratory)

Description

The Fermilab Linac delivers 400 MeV H- beam to the Booster rapid cycling synchrotron. Longitudinal dynamics in the Linac affects the beam losses in the Linac itself as welll as at the Booster. To understand better the longitudinal beam properties, two bunch shape monitors (BSM) in the Linac transition section where RF frequency changes from 201 MHz to 805 MHz, were recently brought back to operation.. A technique was developed to estimate the resolution of the BSMs directly from measurements by scanning the focusing/deflecting DC voltage of the deflecting plates and RF deflector phase. The estimations made for the Linac’s BSMs are correlated with known mechanical BSM details. The effect of finite resolution on the bunch length measurements is discussed.