A Mo–Cu superconducting transition-edge microcalorimeter with 4.5eV energy resolution at 6keV

Irwin, K. D.; Hilton, G. C.; Martinis, John M.; Deiker, S.; Bergren, Norman F.; Nam, Sae Woo; Rudman, D. A.; Wollman, David A.

doi:10.1016/s0168-9002(99)01354-6

Cited by 106 publications

(43 citation statements)

References 5 publications

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“…The T c of the superconducting metal is suppressed by the presence of the normal metal through the proximity effect. 5 Controlling the T c of a bilayer is technically challenging, as the T c is a sensitive function of the properties of both layers, as well as the interface transparency.…”

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confidence: 99%

Superconducting transition edge sensor using dilute AlMn alloys

Deiker

Doriese

Hilton

et al. 2004

Applied Physics Letters

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We have fabricated a bolometer using a transition-edge sensor (TES) made of Al doped with Mn to suppress the superconducting critical temperature (Tc) of Al from ∼1Kto∼100mK. The resulting detector exhibits low-frequency noise consistent with theory, with a noise-equivalent power of 7.5×10−18W∕√Hz. The addition of Mn impurities did not significantly increase the heat capacity of the TES. In addition, the detector is surprisingly insensitive to applied magnetic fields. The use of AlMn alloy films in arrays of TES detectors has advantages in simplicity of fabrication when compared to traditional bilayer fabrication techniques.

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confidence: 99%

Superconducting transition edge sensor using dilute AlMn alloys

Deiker

Doriese

Hilton

et al. 2004

Applied Physics Letters

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“…Recent experiments show energy resolutions of eV [4] and 4.5 eV [5] at a photon energy of 5.89 keV, with effective pulse decay times of 0.1 and 2 ms, respectively.…”

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confidence: 99%

AC biased TES-based X-ray microcalorimeter with an energy resolution of 6.3 eV at 5.89 keV

Kuur

Korte

Hoevers

et al. 2003

IEEE Trans. Appl. Supercond.

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Frequency domain multiplexing (FDM) is an attractive option for the readout of imaging arrays of microcalorimeters. The most straightforward implementation of FDM is based on alternating voltage (AC) biasing of the individual microcalorimeters. It is clear that for future applications the performance in terms of energy resolution and count rate capability is crucial. We discuss the consequences of AC bias for the performance of a microcalorimeter, and make a direct experimental comparison between the performance of a TES based microcalorimeter AC and DC bias. Modeling, as well as experiments, show that the performance of the device is is very similar in terms of energy resolution and pulse shapes (100 s effective time constant). The measured energy resolution at 5.89 keV photon energy is 6.3 eV for AC bias at 46 kHz and 5.5 eV for DC bias.

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“…Related devices have been developed as photon detectors from optical to gamma ray wavelengths [83]- [86]. The characteristic time for a photon to deposit its energy in the absorber is short compared to the thermal relaxation time of the device, so the height of the pulse is proportional to the energy of the absorbed photon.…”

Section: Tes Calorimetersmentioning

confidence: 99%