13th Diagnostics Experts of European Light Sources (DEELS)

Session

Session

23 Mar 2026, 14:30

Paul Scherrer Institute

Conveners

Session: 3

• Laura Torino (ALBA-CELLS)

20. Electron bunch length measurement at ESRF-EBS using Time Correlated Single Photon Counting

Friederike Ewald (ESRF)

23/03/2026, 14:30

Presentation

The commonly used bunch length diagnostics in electron storage rings is the streak camera, fed by visible synchrotron light. Although this instrument is able to precisely measure the shape of very short longitudinal profiles of idividual bunches, it also has a major disadvantage: its photocathode is subject to aging upon permanent exposure to incoming light. It is therefore mainly used for...

15. Filamentation due to the Vacuum-to-Air Window of the X-ray Pinhole Camera

Lorraine Bobb (Diamond Light Source)

23/03/2026, 14:55

Presentation

X-ray pinhole cameras are still the preferred option for emittance measurement in synchrotron light sources due to their simplicity in design, operation and data analysis. It has been observed over many years at multiple facilities, that a structure similar to a diffraction pattern is observed when the electron beam size is squeezed. This effect is called filamentation and has been identified...