A cryogenic imaging x-ray spectrometer for XEUS readout by frequency-division SQUID multiplexers

Anquita²,

Barcons

et al. 2006

SPIE Proceedings

Self Cite

EURECA (EURopean-JapanEse Calorimeter Array) comprises a 5 x 5 pixel imaging TES-based micro-calorimeter array read-out by SQUID-based frequency-domain-multiplexed electronics and cooled down by an adiabatic demagnetization refrigerator. A European-Japanese consortium designs, fabricates, and tests this prototype instrument with the aim to show within about 2 years technology readiness of a TES-based X-ray imaging micro-calorimeter array in anticipation of future X-ray astronomy missions, like XEUS (ESA), Constellation-X (NASA), NEXT (JAXA), DIOS (JAXA), ESTREMO (ASI), and NEW (Dutch-multinational). This paper describes the instrument concept, and shows the design of the various sub-units, like the TES detector array, LC-filters, SQUID-amplifiers, flux-locked-loop electronics, AC-bias sources, etc.

Section: Bandwidth and Cross Talkmentioning

confidence: 99%

EURECA: a European-Japanese micro-calorimeter array

Anquita²,

Barcons

et al. 2006

SPIE Proceedings

Self Cite

“…EURECA will use a 5 x 5 TES-array 1 . Such detector arrays based on bulk-micromachining 2 have been successfully produced ( Fig. 2) and individual pixels show an energy resolution about 2.5 eV FWHM for 5.9 keV X-rays.…”

Section: Tes Arraymentioning

confidence: 99%

“…2) and individual pixels show an energy resolution about 2.5 eV FWHM for 5.9 keV X-rays. The pixels in these arrays have a 250 x 250 µm 2 size and each pixel a 160 x 160 µm 2 Ti/Au TES with a transition temperature at about 100 mK. The mushroom shaped Cu/Bi absorber will be coupled to the 100 x 100 µm 2 central area of the TES by means of a copper stem.…”

Section: Tes Arraymentioning

confidence: 99%

EURECA: European-Japanese Microcalorimeter Array

Anquita²,

Bakker

et al. 2008

J Low Temp Phys

The EURECA (EURopean-JapanEse Calorimeter Array) project aims to demonstrate the science performance and technological readiness of an imaging X-ray spectrometer based on a micro-calorimeter array for application in future X-ray astronomy missions, like Constellation-X and XEUS. The prototype instrument consists of a 5 x 5 pixel array of TES-based micro-calorimeters read out by by two SQUID-amplifier channels using frequency-domain-multiplexing (FDM). The SQUID-amplifiers are linearized by digital base-band feedback. The detector array is cooled in a cryogenfree cryostat consisting of a pulse tube cooler and a two stage ADR. A European-Japanese consortium designs, fabricates, and tests this prototype instrument. This paper describes the instrument concept, and shows the design and status of the various sub-units, like the TES detector array, LC-filters, SQUID-amplifiers, AC-bias sources, digital electronics, etc. Initial tests of the system at the PTB beam line of the BESSY synchrotron showed stable performance and an X-ray energy resolution of 1.58 eV at 250 eV and 2.5 eV @ 5.9 keV for the read-out of one TES-pixel only. Next step is deployment of FDM to read-out the full array. Full performance demonstration is expected mid 2009.

“…In case of a 32 x 32 imaging spectrometer for XEUS and FDM operation in the 1 -10 MHz range the required net filter surface area equals approximately 37 cm 2 . For EURECA the accomodation is shown in Fig.…”

Section: Lc Filtersmentioning

confidence: 99%

EURECA: a European-Japanese microcalorimeter array

Space Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray

Anquita²,

Barcons

et al. 2008

Self Cite

The EURECA (EURopean-JapanEse Calorimeter Array) project aims to demonstrate the science performance and technological readiness of an imaging X-ray spectrometer based on a micro-calorimeter array for application in future X-ray astronomy missions, like Constellation-X and XEUS. The prototype instrument consists of a 5 x 5 pixel array of TES-based micro-calorimeters read out by by two SQUID-amplifier channels using frequency-domain-multiplexing (FDM). The SQUID-amplifiers are linearized by digital base-band feedback. The detector array is cooled in a cryogenfree cryostat consisting of a pulse tube cooler and a two stage ADR. A European-Japanese consortium designs, fabricates, and tests this prototype instrument. This paper describes the instrument concept, and shows the design and status of the various sub-units, like the TES detector array, LC-filters, SQUID-amplifiers, AC-bias sources, digital electronics, etc.Initial tests of the system at the PTB beam line of the BESSY synchrotron showed stable performance and an X-ray energy resolution of 1.58 eV at 250 eV and 2.5 eV @ 5.9 keV for the read-out of one TES-pixel only. Next step is deployment of FDM to read-out the full array. Full performance demonstration is expected mid 2009.