Energy resolution improvement of superconducting tunnel junction particle detectors with infrared-blocking filters

Shiki, Shigetomo; Ukibe, Masahiro; Maeda, Ryutaro; Ohkubo, M.; Sato, Yuki; Tomita, S.

doi:10.1016/j.nima.2008.07.078

Cited by 7 publications

(2 citation statements)

References 19 publications

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“…Recent work has focused on improving the energy resolution. In one example, a metal mesh was placed in front of the STJ to block infrared radiation (Shiki et al, ) and lower the noise. The energy resolution for argon ions improved by a factor of 2.5.…”

Section: Cryogenic Detectorsmentioning

confidence: 99%

Single‐molecule mass spectrometry

Keifer

Jarrold

2016

Mass Spectrometry Reviews

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In single-molecule mass spectrometry, the mass of each ion is measured individually; making it suitable for the analysis of very large, heterogeneous objects that cannot be analyzed by conventional means. A range of single-molecule mass spectrometry techniques has been developed, including time-of-flight with cryogenic detectors, a quadrupole ion trap with optical detection, single-molecule Fourier transform ion cyclotron resonance, charge detection mass spectrometry, quadrupole ion traps coupled to charge detector plates, and nanomechanical oscillators. In addition to providing information on mass and heterogeneity, these techniques have been used to study impact craters from cosmic dust, monitor the assembly of viruses, elucidate the fluorescence dynamics of quantum dots, and much more. This review focuses on the merits of each of these technologies, their limitations, and their applications. © 2016 Wiley Periodicals, Inc. Mass Spec Rev 36:715-733, 2017.

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Section: Cryogenic Detectorsmentioning

confidence: 99%

Single‐molecule mass spectrometry

Keifer

Jarrold

2016

Mass Spectrometry Reviews

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“…The performance improvement in kinetic energy measurement of the STJ particle detectors by the use of the IR-blocking filters will be published elsewhere. 22)…”

Section: Cryogenic Performancementioning

confidence: 99%

Infrared-Blocking Filters for Superconducting-Tunnel-Junction Particle Detector

Shiki

Ukibe

Maeda

et al. 2008

jjap

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The prevention of detector performance degradation due to infrared radiation is a serious issue in superconducting detectors. For this purpose, we designed and fabricated metal-mesh infrared-blocking filters. The infrared-blocking filters are extremely effective for superconducting-tunnel-junction (STJ) particle detectors. One of the best mesh structures consists of a free-standing 500-nm-thick Cr/Cu film, having a membrane size of 12 ×5 mm2, and an array of circular holes of 2 µm diameter and 3.5 µm pitch. Infrared transmission spectra show that the transmission of the 300 K radiation is only 1%. On the other hand, the ion transmission efficiency is as high as 20%, which is consistent with the geometrically expected value. These properties produce good results in the sense that the holding time at 0.3 K in a 3He cryostat is not affected and is as long as 130 h even under the operating condition, that is, with a through hole of a molecule flight path between the STJ detector at 0.3 K and room temperature. The subgap current of the STJ detector is not affected by the room-temperature radiation.

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