Thicker, more efficient superconducting strip-line detectors for high throughput macromolecules analysis

Journal Article · Mon Jan 10 00:00:00 EST 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3537808· OSTI ID:21518249

Casaburi, A; Ejrnaes, M; Cristiano, R ^[1]; Zen, N; Ohkubo, M ^[2]; Pagano, S ^[3]

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1. CNR-Istituto di Cibernetica 'E. Caianiello', 80078 Pozzuoli (Italy)
2. AIST-Research Institute of Instrumentation Frontier, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568 (Japan)
3. CNR-SPIN and Dip. di Matematica e Informatica, Universita di Salerno, 84084 Fisciano (Italy)

Fast detectors with large area are required in time-of-flight mass spectrometers for high throughput analysis of biological molecules. We fabricated and characterized subnanosecond 1x1 mm{sup 2} NbN superconducting strip-line detectors. The influence of the strip-line thickness on the temporal characteristics and efficiency of the detector for the impacts of keV accelerated molecules is investigated. We find that the increase of thickness improves both efficiency and response time. In the thicker sample we achieved a rise time of 380 ps, a fall time of 1.38 ns, and a higher count rate. The physics involved in this behavior is investigated.

• OSTI ID: 21518249
• Journal Information: Applied Physics Letters, Vol. 98, Issue 2; Other Information: DOI: 10.1063/1.3537808; (c) 2011 American Institute of Physics; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COUNTING RATES
EFFICIENCY
MICROWAVE RADIATION
MOLECULES
NIOBIUM NITRIDES
PULSE RISE TIME
SUPERCONDUCTING DEVICES
THICKNESS
TIME-OF-FLIGHT MASS SPECTROMETERS
DIMENSIONS
DYNAMIC MASS SPECTROMETERS
ELECTROMAGNETIC RADIATION
MASS SPECTROMETERS
MEASURING INSTRUMENTS
NIOBIUM COMPOUNDS
NITRIDES
NITROGEN COMPOUNDS
PNICTIDES
RADIATIONS
REFRACTORY METAL COMPOUNDS
SPECTROMETERS
TIME-OF-FLIGHT SPECTROMETERS
TIMING PROPERTIES
TRANSITION ELEMENT COMPOUNDS