IBIC2026 - 15th International Beam Instrumentation Conference

Improving the double slit interferometer setup at KARA to achieve turn-resolved transversal beam size measurements

MOP029

31 Aug 2026, 16:40

2h

Ballroom C (Whistler Conference Centre)

Poster Presentation MC04: Transverse Profile and Emittance Monitors Monday Poster Session 1

Speaker

Marvin Noll (Karlsruhe Institute of Technology)

Description

At the Karlsruhe Research Accelerator (KARA), electron beams of up to 200 mA are stored with an energy of 2.5 GeV, while injection is performed at 500 MeV.
At a five degree port of a bending magnet, a double slit Interferometer setup is used to measure the transversal beam size. In oder to digitize the interferogram in the visible spectrum, previously a CMOS camera has been used, which yields averages of the beam size over a few milli seconds. Since the beam size information in the interferogram is contained in one dimension, a fast line camera can be used instead. KALYPSO is a KIT-developed line camera which can be triggered at every revolution of KARA.
In this contribution we report on the necessary mechanical and optical improvements to implement the KALYPSO readout path and show the system is sensitive enough to get beam size readings for single-bunch operation.