Dr. Daniela Bagliani Profile

Dr. Daniela Bagliani

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Publications (5)

Proceedings Article | 24 July 2014 Paper

The Cryogenic AntiCoincidence detector for ATHENA: the progress towards the final pixel design

Claudio Macculi, Luigi Piro, Donatella Cea, Luca Colasanti, Simone Lotti, Lorenzo Natalucci, Flavio Gatti, Daniela Bagliani, Michele Biasotti, Dario Corsini, Giulio Pizzigoni, Guido Torrioli, Marco Barbera, Teresa Mineo, Emanuele Perinati

Proceedings Volume 9144, 91445S (2014) https://doi.org/10.1117/12.2054946

KEYWORDS: Sensors, Phonons, Silicon, Copper, Cryogenics, Particles, Energy efficiency, X-rays, Tellurium, Space operations

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“The Hot and Energetic Universe” is the scientific theme approved by the ESA SPC for a Large mission to be flown in the next ESA slot (2028th) timeframe. ATHENA is a space mission proposal tailored on this scientific theme. It will be the first X-ray mission able to perform the so-called “Integral field spectroscopy”, by coupling a high-resolution spectrometer, the X-ray Integral Field Unit (X-IFU), to a high performance optics so providing detailed images of its field of view (5’ in diameter) with an angular resolution of 5” and fine energy-spectra (2.5eV@E<7keV). The X-IFU is a kilo-pixel array based on TES (Transition Edge Sensor) microcalorimeters providing high resolution spectroscopy in the 0.2-12 keV range. Some goals is the detection of faint and diffuse sources as Warm Hot Intergalactic Medium (WHIM) or galaxies outskirts. To reach its challenging scientific aims, it is necessary to shield efficiently the X-IFU instrument against background induced by external particles: the goal is 0.005 cts/cm^2/s/keV. This scientific requirement can be met by using an active Cryogenic AntiCoincidence (CryoAC) detector placed very close to X-IFU (~ 1 mm below). This is shown by our GEANT4 simulation of the expected background at L2 orbit. The CryoAC is a TES based detector as the X-IFU sharing with it thermal and mechanical interfaces, so increasing the Technology Readiness Level (TRL) of the payload. It is a 2x2 array of microcalorimeter detectors made by Silicon absorber (each of about 80 mm^2 and 300 μm thick) and sensed by an Ir TES. This choice shows that it is possible to operate such a detector in the so-called athermal regime which gives a response faster than the X-IFU (< 30 μs), and low energy threshold (above few keV). Our consortium has developed and tested several samples, some of these also featured by the presence of Al-fins to efficiently collect the athermal phonons, and increased x-ray absorber area (up to 1 cm^2). Here the results of deep test related to one of the last sample produced (namely AC-S5), and steps to reach the final detector design will be discussed.

Proceedings Article | 23 July 2014 Paper

Large area TES spiderweb bolometer for multi-mode cavity microwave detect

M. Biasotti, D. Bagliani, V. Ceriale, D. Corsini, P. De Bernardis, F. Gatti, R. Gualtieri, L. Lamagna, S. Masi, G. Pizzigoni, A. Schillaci

Proceedings Volume 9153, 915308 (2014) https://doi.org/10.1117/12.2057071

KEYWORDS: Bolometers, Sensors, Silicon, Microwave radiation, Titanium, Computer aided design, Gold, Polarization, Waveguides, Oxygen

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Proceedings Article | 17 September 2012 Paper

The cryogenic anticoincidence detector for ATHENA-XMS: preliminary results from the new prototype

Claudio Macculi, Luigi Piro, Luca Colasanti, Simone Lotti, Lorenzo Natalucci, Daniela Bagliani, Michele Biasotti, Flavio Gatti, Guido Torrioli, Simone Chiarucci, Marco Barbera, Teresa Mineo, Emanuele Perinati

Proceedings Volume 8443, 84435G (2012) https://doi.org/10.1117/12.926117

KEYWORDS: Sensors, Prototyping, Silicon, Cryogenics, X-rays, Phonons, Thermal modeling, Tellurium, X-ray detectors, Physics

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Proceedings Article | 29 July 2010 Paper

The TES-based cryogenic anticoincidence detector for IXO: first results from large area prototypes

Claudio Macculi, Luca Colasanti, Simone Lotti, Lorenzo Natalucci, Luigi Piro, Daniela Bagliani, Francesco Brunetto, Lorenza Ferrari, Flavio Gatti, Guido Torrioli, Paolo Bastia, Arnaldo Bonati, Marco Barbera, Giovanni La Rosa, Teresa Mineo, Emanuele Perinati

Proceedings Volume 7732, 77323Y (2010) https://doi.org/10.1117/12.856399

KEYWORDS: Sensors, Prototyping, Imaging spectroscopy, X-rays, Spectroscopy, Aluminum, Photons, Cryogenics, X-ray detectors, Silicon

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Proceedings Article | 22 July 2008 Paper

A phenomenological explanation of TES excess noise

L. Ferrari, D. Bagliani, E. Celasco, M. Celasco, R. Eggenhoffner, F. Gatti, R. Valle

Proceedings Volume 7021, 70211I (2008) https://doi.org/10.1117/12.789579

KEYWORDS: Superconductors, Sensors, Resistance, Statistical analysis, Solids, Statistical modeling, Thin films, Magnetism, Resistors, Plasma systems

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