6.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Aalto UniversityFI160 papers
- University of HelsinkiFI89 papers
- Centre National de la Recherche ScientifiqueFR69 papers
- National Institute for AstrophysicsIT65 papers
- Helsinki Institute of PhysicsFI63 papers
- University of ManchesterGB63 papers
- University of MilanIT63 papers
- University of California, Santa BarbaraUS61 papers
- University of TriesteIT58 papers
- Universidad de CantabriaES57 papers
- University of OsloNO57 papers
- University of Rome Tor VergataIT57 papers
29 papers · 1 filter
The X-ray Integral Field Unit at the end of the Athena reformulation phase
Philippe Peille, Didier Barret, Edoardo Cucchetti +279
The Athena mission entered a redefinition phase in July 2022, driven by the imperative to reduce the mission cost at completion for the European Space Agency below an acceptable ta…
Thermalization of a SQUID chip at cryogenic temperature: Thermal conductance measurement for GE 7031 Varnish Glue, Apiezon N Grease and Rubber Cement between 20 and 200 mK
M. D'Andrea, G. Torrioli, C. Macculi +1
In the context of the ATHENA X-IFU Cryogenic AntiCoincidence Detector (CryoAC) development, we have studied the thermalization properties of a 2mm x 2mm SQUID chip. The chip is glu…
Frequency domain multiplexing readout for large arrays of transition-edge sensors
Davide Vaccaro, Hiroki Akamatsu, Luciano Gottardi +13
We report our most recent progress and demonstration of a frequency domain multiplexing (FDM) readout technology for transition-edge sensor (TES) arrays, both of which we have been…
Susceptibility study of TES micro-calorimeters for X-ray spectroscopy under FDM readout
Davide Vaccaro, Hiroki Akamatsu, Luciano Gottardi +15
We present a characterization of the sensitivity of TES X-ray micro-calorimeters to environmental conditions under frequency-domain multiplexing (FDM) readout. In the FDM scheme, e…
The Athena X-ray Integral Field Unit: a consolidated design for the system requirement review of the preliminary definition phase
Didier Barret, Vincent Albouys, Jan-Willem den Herder +296
The Athena X-ray Integral Unit (X-IFU) is the high resolution X-ray spectrometer, studied since 2015 for flying in the mid-30s on the Athena space X-ray Observatory, a versatile ob…
Aalto-1, multi-payload CubeSat: In-orbit results and lessons learned
M. R. Mughal, J. Praks, R. Vainio +17
The in-orbit results and lessons learned of the first Finnish satellite Aalto-1 are briefly presented in this paper. Aalto-1, a three-unit CubeSat which was launched in June 2017,…
Class-B cable-driving SQUID amplifier
Mikko Kiviranta
We suggest a SQUID amplifier configuration with improved power efficiency, for applications where cooling budgets are limited, in particular superconducting detector array readouts…
Progress in the development of frequency domain multiplexing for the X-ray Integral Field Unit on board the Athena mission
H. Akamatsu, L. Gottardi, J. van der Kuur +11
Frequency domain multiplexing (FDM) is the baseline readout system for the X-ray Integral Field Unit (X-IFU) on board the Athena mission. Under the FDM scheme, TESs are coupled to…
Two SQUID amplifiers intended to alleviate the summing node inductance problem in multiplexed arrays of Transition Edge Sensors
Mikko Kiviranta, Leif Grönberg, Jan van der Kuur
Frequency Domain Multiplexed detector arrays constructed of superconducting Transition Edge Sensors in the current-summing configuration suffer from the finite impedance of the sum…
Optimising the multiplex factor of the frequency domain multiplexed readout of the TES-based microcalorimeter imaging array for the X-IFU instrument on the Athena Xray observatory
J. van der Kuur, L. G. Gottardi, H. Akamatsu +5
Athena is a space-based X-ray observatory intended for exploration of the hot and energetic universe. One of the science instruments on Athena will be the X-ray Integrated Field Un…
Development of frequency domain multiplexing for the X-ray Integral Field Unit (X-IFU) on the Athena
Hiroki Akamatsu, Luciano Gottardi, Jan van der Kuur +11
We are developing the frequency domain multiplexing (FDM) read-out of transition-edge sensor (TES) microcalorimeters for the X-ray Integral Field Unit (X-IFU) instrument on board o…
Development of the superconducting detectors and read-out for the X-IFU instrument on board of the X-ray observatory Athena
Luciano Gottardi, Hiroki Akamatsu, Marcel P. Bruijn +6
The Advanced Telescope for High-Energy Astrophysics (Athena) has been selected by ESA as its second large-class mission. The future European X-ray observatory will study the hot an…
Development of TES-based detectors array for the X-ray Integral Field Unit (X-IFU) on the future x-ray observatory ATHENA
Luciano Gottardi, Hiroki Akamatsu, Didier Barret +10
We are developing transition-edge sensor (TES)-based microcalorimeters for the X-ray Integral Field Unit (XIFU) of the future European X-Ray Observatory Athena. The microcalorimete…
Optical Response of Strained- and Unstrained-Silicon Cold-Electron Bolometers
T. L. R. Brien, P. A. R. Ade, P. S. Barry +10
We describe the optical characterisation of two silicon cold-electron bolometers each consisting of a small () island of degenerately doped silicon with s…
Planck 2013 results. V. LFI calibration
Planck Collaboration, N. Aghanim, C. Armitage-Caplan +217
We discuss the methods employed to photometrically calibrate the data acquired by the Low Frequency Instrument on Planck. Our calibration is based on a combination of the Orbital D…
Planck 2013 results. II. Low Frequency Instrument data processing
Planck Collaboration, N. Aghanim, C. Armitage-Caplan +229
We describe the data processing pipeline of the Planck Low Frequency Instrument (LFI) data processing centre (DPC) to create and characterize full-sky maps based on the first 15.5…
Planck Early Results. V. The Low Frequency Instrument data processing
A. Zacchei, D. Maino, C. Baccigalupi +146
We describe the processing of data from the Low Frequency Instrument (LFI) used in production of the Planck Early Release Compact Source Catalogue (ERCSC). In particular, we discus…
Planck Early Results. II. The thermal performance of Planck
Planck Collaboration, P. A. R. Ade, N. Aghanim +225
The performance of the Planck instruments in space is enabled by their low operating temperatures, 20K for LFI and 0.1K for HFI, achieved through a combination of passive radiative…
Planck Early Results: The Planck mission
Planck Collaboration, P. A. R. Ade, N. Aghanim +272
The European Space Agency's Planck satellite was launched on 14 May 2009, and has been surveying the sky stably and continuously since 13 August 2009. Its performance is well in li…
Planck pre-launch status: calibration of the Low Frequency Instrument flight model radiometers
F. Villa, L. Terenzi, M. Sandri +71
The Low Frequency Instrument (LFI) on-board the ESA Planck satellite carries eleven radiometer subsystems, called Radiometer Chain Assemblies (RCAs), each composed of a pair of pse…
Design, development, and verification of the Planck Low Frequency Instrument 70 GHz Front-End and Back-End Modules
J. Varis, N. J. Hughes, M. Laaninen +26
70 GHz radiometer front-end and back-end modules for the Low Frequency Instrument of the European Space Agencys Planck Mission were built and tested. The operating principles and t…
Advanced modelling of the Planck-LFI radiometers
P. Battaglia, C. Franceschet, A . Zonca +22
The Low Frequency Instrument (LFI) is a radiometer array covering the 30-70 GHz spectral range on-board the ESA Planck satellite, launched on May 14th, 2009 to observe the cosmic m…
Thermal susceptibility of the Planck-LFI receivers
L Terenzi, M J Salmon, A Colin +33
This paper is part of the Prelaunch status LFI papers published on JINST: http://www.iop.org/EJ/journal/-page=extra.proc5/jinst . This paper describes the impact of the Planck Low…
Cryogenic environment and performance for testing the Planck radiometers
L. Terenzi, M. Lapolla, M. Laaninen +21
This paper is part of the Prelaunch status LFI papers published on JINST: http://www.iop.org/EJ/journal/-page=extra.proc5/jinst The Planck LFI Radiometer Chain Assemblies (RCAs) ha…