München 2019 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 5: Modern Proton Accelerators - Challenges and Perspektives

AKBP 5.2: Hauptvortrag

Dienstag, 19. März 2019, 11:30–12:00, HS 7

Non-destructive Beam Diagnostics for high Current Proton LINACs — •Peter Forck — GSI

To achieve an efficient acceleration, high current hadron LINACs are operated close to their technical limits and in many cases a non-standard beam dynamics is chosen. Beam parameters have to be well controlled calling for a precise beam measurement. Non-invasive beam instrumentation is preferred to enable the simultaneous observation along the entire LINAC and to prevent for the destruction of any intersecting material.

For pulsed LINACs the beam current and transmission measurements with current transformers is standard, but an extended principle suited for cw-LINACs had recently been established. Non-invasive profile measurements are based on the detection of residual gas ionization products by an Ionization Profile Monitor or the detection of beam induced fluorescence photons. Such systems were recently developed. For H⁻-beams photo-detachment by a scanning laser beam can be applied for profile and emittance determination. The capability of methods for bunch shape determination will be addressed. Examples from different accelerators illustrate the applicability. Perspectives for the instrumentation will be discussed in this overview talk.