Ronny Stolz

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A lately developed clinical investigation method for the diagnosis of heart disease, the magnetocardiogram (MCG) is described in this paper. Sensitive sensors based on Superconducting Quantum Interference Devices (SQUID), developed at IPHT-Jena, Germany are used for the acquisition of reliable data. MCGs are sensitive to magnetic interferences and(More)
We propose an efficient multiplexing technique for superconducting nanowire single-photon detectors based on an orthogonal detector bias switching method enabling the extraction of the average count rate of a set of detectors by one readout line. We implemented a system prototype where the SNSPDs are connected to an integrated cryogenic readout and a pulse(More)
SQUID magnetometers used in Transient Electromagnetics (TEM) surveys have become a valuable tool for exploring difficult targets during the last decade. Over the past 12 years, IPHT has developed SQUID systems for TEM applications, based on "High Temperature" Superconductors (HTS, Yttrium-Barium-Copper-Oxide YBCO), cooled with liquid nitrogen at 77 K. Test(More)
Forty years after the first application of Superconducting Quantum Interference Devices (SQUIDs) [1], [2] for geophysical purposes, they have recently become a valued tool for mineral exploration. One of the most common applications is time domain (or transient) electromagnetics (TEM), an active method, where the inductive response from the ground to a(More)
We present an optically pumped magnetometer working in a new operational mode-the light-shift dispersed Mz (LSD-Mz) mode. It is realized combining various features; (1) high power off-resonant optical pumping; (2) Mz configuration, where pumping light and magnetic field of interest are oriented parallel to each other; (3) use of small alkali metal vapor(More)
Wireless technology reveals new opportunities for a more efficient medical care system, but requires to reduce the amount of data to be transmitted. Automated diagnosis systems are able to solve this need. In this view, wavelets are well suited for the necessities of non-stationary biological signals, such as provided by magnetocardiograms. Automated(More)
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