Development of an energy dispersive spectrometer for a transmission electron microscope utilizing a TES microcalorimeter array

Keiichi Tanaka, Kazuhisa Mitsuda, Tom Hara, Keisuke Maehata, Noriko Y. Yamasaki, Akikazu Odawara, Atsushi Nagata, Katsuaki Watanabe, Yoh Takei

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

A high-energy-resolution energy dispersive spectrometer (EDS) utilizing a TES (transition edge sensor) microcalorimeter array is developed for a transmission electron microscope (TEM). The goals of the development are (1) an energy range of 0.3 - 10 keV, (2) an energy resolution of FWHM < 10 eV, (3) a maximum counting rate of 3 kcps, and (4) a cryogen-free cooling system. We adopted a dilution refrigerator (DR) pre-cooled by a Gifford-McMahon (GM) refrigerator to cool the TES microcalorimeter to -∼ 100 mK. In order to avoid micro phonics of GM fridge to propagate to the TEM, pressurized He gas is circulated between the DR and the GM to reject heat from the DR. The GM is mechanically well isolated from the TEM. In oder to obtain 3 kcps counting rate, we utilize a ten pixel TES array and read out the signals in parallel wtih ten analog signal channels from cryogenic to room temperature electronics. One of the pixels can be always irradiated by a radio isotope for energy calibration. As the first step, we have attached a single pixel TES system cooled by the cryogen-free cooling system to the TEM and obtained an energy resolution of 8 eV at 1.8 keV without degrading the spatial resolution of the TEM at a 2 Å level. A ten pixel TES system is also being developed from the front-end detector assembly to the room temperature digital electronics. We describe the signal processing system and packaging of the detector assembly.

Original languageEnglish
Title of host publicationLow Temperature Detectors LTD-13 - Proceedings of the 13th International Workshop
Pages715-718
Number of pages4
DOIs
Publication statusPublished - Dec 1 2009
Event13th International Workshop on Low Temperature Detectors, LTD-13 - Stanford, CA, United States
Duration: Jul 20 2009Jul 24 2009

Publication series

NameAIP Conference Proceedings
Volume1185
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other13th International Workshop on Low Temperature Detectors, LTD-13
CountryUnited States
CityStanford, CA
Period7/20/097/24/09

Fingerprint

calorimeters
electron microscopes
refrigerators
spectrometers
sensors
pixels
dilution
cooling systems
energy
counting
assembly
digital electronics
detectors
room temperature
packaging
cryogenics
signal processing
isotopes
spatial resolution
analogs

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Tanaka, K., Mitsuda, K., Hara, T., Maehata, K., Yamasaki, N. Y., Odawara, A., ... Takei, Y. (2009). Development of an energy dispersive spectrometer for a transmission electron microscope utilizing a TES microcalorimeter array. In Low Temperature Detectors LTD-13 - Proceedings of the 13th International Workshop (pp. 715-718). (AIP Conference Proceedings; Vol. 1185). https://doi.org/10.1063/1.3292441

Development of an energy dispersive spectrometer for a transmission electron microscope utilizing a TES microcalorimeter array. / Tanaka, Keiichi; Mitsuda, Kazuhisa; Hara, Tom; Maehata, Keisuke; Yamasaki, Noriko Y.; Odawara, Akikazu; Nagata, Atsushi; Watanabe, Katsuaki; Takei, Yoh.

Low Temperature Detectors LTD-13 - Proceedings of the 13th International Workshop. 2009. p. 715-718 (AIP Conference Proceedings; Vol. 1185).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tanaka, K, Mitsuda, K, Hara, T, Maehata, K, Yamasaki, NY, Odawara, A, Nagata, A, Watanabe, K & Takei, Y 2009, Development of an energy dispersive spectrometer for a transmission electron microscope utilizing a TES microcalorimeter array. in Low Temperature Detectors LTD-13 - Proceedings of the 13th International Workshop. AIP Conference Proceedings, vol. 1185, pp. 715-718, 13th International Workshop on Low Temperature Detectors, LTD-13, Stanford, CA, United States, 7/20/09. https://doi.org/10.1063/1.3292441
Tanaka K, Mitsuda K, Hara T, Maehata K, Yamasaki NY, Odawara A et al. Development of an energy dispersive spectrometer for a transmission electron microscope utilizing a TES microcalorimeter array. In Low Temperature Detectors LTD-13 - Proceedings of the 13th International Workshop. 2009. p. 715-718. (AIP Conference Proceedings). https://doi.org/10.1063/1.3292441
Tanaka, Keiichi ; Mitsuda, Kazuhisa ; Hara, Tom ; Maehata, Keisuke ; Yamasaki, Noriko Y. ; Odawara, Akikazu ; Nagata, Atsushi ; Watanabe, Katsuaki ; Takei, Yoh. / Development of an energy dispersive spectrometer for a transmission electron microscope utilizing a TES microcalorimeter array. Low Temperature Detectors LTD-13 - Proceedings of the 13th International Workshop. 2009. pp. 715-718 (AIP Conference Proceedings).
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