Jul 22 – 26, 2019
Europe/Rome timezone

Alpha line detection with Nb based and YBCO based superconducting resonators

Jul 23, 2019, 5:45 PM
1h 15m
Piazza Città di Lombardia (Milano)

Piazza Città di Lombardia


Piazza Città di Lombardia, 1, 20124 Milano MI
Poster Low Temperature Detector Development and Physics Poster session


Dr Masato Naruse (Saitama university)


For high-energy particle detection, we investigated two materials: niobium and a high-temperature superconductor, YBa$_2$Cu$_3$O$_{7-\delta}$. Lumped element kinetic inductance detectors are fabricated with the both superconductors. The both devices detected the alpha line (5.4 MeV) radiated from $^{241}$Am source at 1 K. The energy resolution of the Nb-base detectors was approximately 0.6 MeV and independent from the power of the readout signal, although the decay time strongly depends on the microwave power and vary from 6-2 $\mu$s.
The duration of alpha line signals with the YBCO-resonators were less than 0.1 $\mu$s due to relatively low quality factor (4000-7000) and very fast quasiparticle life time.

Student (Ph.D., M.Sc. or B.Sc.) N
Less than 5 years of experience since completion of Ph.D N

Primary authors

Dr Masato Naruse (Saitama university) Mr Tomohiko Ando (Saitama University) Mr Masahiro Kuwata (Saitama University) Mr Yuki Waga (Saitama University) Dr Tohru Taino (Saitama University) Prof. Hiroaki Myoren (Saitama University)

Presentation materials