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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 11: Diagnostics, Syn. radiation and FELs

AKBP 11.3: Vortrag

Mittwoch, 18. März 2020, 10:00–10:15, MOL 213

Eddy Current Sensor to detect the superconducting transition of the SC magnetic shielding inside the bERLinPro Photoinjector — •Jens Völker — Helmholtz Zentrum Berlin, Berlin, Deutschland

Inside the Photoinjector module for bERLinPro a superconducting (SC) magnetic shield will be installed between SRF gun cavity and SC solenoid to reduce the magnetic flux next to the cavity shielding during solenoid operation. A test setup was build up to measure the magnetic shield and the cooling efficiency of our new shield design. One element of this setup is a system to detect the superconducting transition of the Niobium plate based on an Eddy-Current Sensor (ECS). The sensor and the read out were designed and tested to observe the thermal induced changes of the ohmic resistance of copper and aluminum plates and also superconducting transition of Niobium. In this talk the ECS system will be introduced and measurement results will be shown.