| 摘要 |
PROBLEM TO BE SOLVED: To provide a detector which prevents a DC bias current from flowing out to a superconducting strip line that is connected in parallel, when a particle is detected.SOLUTION: In a particle/photon detector, when a particle or a photon collides with a superconducting strip that is kept in a superconducting state, the superconducting state is shifted to an ordinary conducting state by the collision, such that the particle or the photon is detected by an electric signal to be generated by occurrence of a resistance change. Components generated by grounding one-side ends of a plurality of superconducting strips in common and connecting capacitors and bias resistors to other-side ends of the superconducting strips in series are combined in parallel and outputted as the electric signal. At the same time, a DC bias current source is connected between each of the superconducting strips and the capacitor or the bias resistor connected thereto in series via a coil, and a DC bias current lower than a critical current is supplied from the DC bias current source to each of the superconducting strips.SELECTED DRAWING: Figure 2 |
