Dortmund 2021 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 3: Radiofrequency

AKBP 3.6: Talk

Tuesday, March 16, 2021, 15:15–15:30, AKBPb

Status of the vertical bath cryostat at the S-DALINAC — •R. Grewe, M. Arnold, J. Conrad, S. Weih, and N. Pietralla — Institut für Kernphysik, TU Darmstadt

For sophisticated measurements of the intrinsic quality factor Q₀ of superconducting radio frequency (srf) cavities the vertical bath cryostat (vtc) of the S-DALINAC[1] is used. To reduce uncertainties of the measurements, the vtc was subject to detailed upgrades. Particular attention was given to the the radio frequency (rf) input and output couplers. To match the input coupler to the cavity it is now possible to change the input coupling strength, which leads to reduced uncertainties of the measured Q₀. The upgrade will be explained along with first measurement results of different srf cavities.

[1] N. Pietralla, Nuclear Physics News, Vol. 28, No. 2, 4 (2018).

Work supported by DFG through GRK 2128, by the state of Hesse through the LOEWE Research Cluster Nuclear Photonics and by BMBF through No. 05H18RDRB2.