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1.
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A high resolution, high frame rate detector based on a microchannel plate read out with the Medipix2 counting CMOS pixel chip. / Mikulec, Bettina ; Vallerga, J V ; McPhate, J B ; Tremsin, A S ; Siegmund, O H W ; Clark, Allan G /Medipix Collaboration
The future of ground-based optical astronomy lies with advancements in adaptive optics (AO) to overcome the limitations that the atmosphere places on high resolution imaging. A key technology for AO systems on future very large telescopes are the wavefront sensors (WFS) which detect the optical phase error and send corrections to deformable mirrors. [...]
CERN-OPEN-2006-061.- Geneva : CERN, 2005 - 6 p. - Published in : IEEE Trans. Nucl. Sci. 52 (2005) 1021-1026 Access to fulltext document: PDF;
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2.
(79)
A noiseless kilohertz frame rate imaging detector based on microchannel plates read out with the Medipix2 CMOS pixel chip / Medipix Collaboration
A new hybrid optical imaging detector is described that is being developed for the next generation adaptive optics (AO) wavefront sensors (WFS) for ground-based telescopes. The detector consists of a photocathode and proximity focused microchannel plates (MCPs) read out by the Medipix2 CMOS pixel ASIC. [...]
CERN-OPEN-2006-058.- Geneva : CERN, 2006 - 7 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 567 (2006) 110-113 Access to fulltext document: PDF;
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3.
(49)
Noiseless, kilohertz-frame-rate, imaging detector based on micro-channel plates readout with the Medipix2 CMOS pixel chip / McPhate, J ; Vallerga, J ; Tremsin, A ; Siegmund, O ; Mikulec, Bettina ; Clark, Allan G /Medipix Collaboration
A new hybrid imaging detector is described that is being developed for the next generation adaptive optics (AO) wavefront sensors. The detector consists of proximity focused microchannel plates (MCPs) read out by pixelated CMOS application specific integrated circuit (ASIC) chips developed at CERN ("Medipix2"). [...]
CERN-OPEN-2006-059.- Geneva : CERN, 2005 - 10 p. - Published in : Proc. SPIE 5881 (2005) 88-97 Access to fulltext document: PDF;
In : SPIE Conference on Optics and Photonics 2005, San Diego, CA, USA, 31 Jul - 4 Aug 2005, pp.88-97
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4.
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Optically sensitive Medipix2 detector for adaptive optics wavefront sensing / Vallerga, John ; McPhate, Jason ; Tremsin, A ; Siegmund, Oswald ; Mikulec, Bettina ; Clark, Allan G
2005 - Published in : Nucl. Instrum. Methods Phys. Res., A 546 (2005) 263-269
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5.
(40)
Noiseless imaging detector for adaptive optics with kHz frame rates / Vallerga, J V ; McPhate, J ; Mikulec, Bettina ; Tremsin, A ; Clark, Allan G ; Siegmund, O H W /Medipix Collaboration
A new hybrid optical detector is described that has many of the attributes desired for the next generation AO wavefront sensors. The detector consists of a proximity focused MCP read out by four multi-pixel application specific integrated circuit (ASIC) chips developed at CERN (â€ﾜMedipix2”) with individual pixels that amplify, discriminate and count input events. [...]
CERN-OPEN-2006-062.- Geneva : CERN, 2004 - 12 p. - Published in : Proc. SPIE 5490 (2004) 1256-1267 Access to fulltext document: PDF;
In : Spie's Astronomical Telescopes And Instrumentation 2004 Meeting, Glasgow, UK, 21 - 25 Jun 2004, pp.1256-1267
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6.
(28)
Photon counting arrays for AO wavefront sensors / Vallerga, J ; Tremsin, A ; McPhate, J ; Mikulec, Bettina ; Clark, Allan G ; Siegmund, O /Medipix Collaboration
Future wavefront sensors for AO on large telescopes will require a large number of pixels and must operate at high frame rates. Unfortunately for CCDs, there is a readout noise penalty for operating faster, and this noise can add up rather quickly when considering the number of pixels required for the extended shape of a sodium laser guide star observed with a large telescope. [...]
CERN-OPEN-2006-060.- Geneva : CERN, 2005 - 11 p. - Published in : Proc. SPIE 5903 (2005) 199-209 Access to fulltext document: PDF;
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7.
(21)
Optically sensitive Medipix2 detector for adaptive optics wavefront sensing / Vallerga, John ; McPhatea, Jason ; Tremsina, Anton ; Siegmund, Oswald ; Mikulec, Bettina ; Clark, Allan G /Medipix2 Collaboration
A new hybrid optical detector is described that has many of the attributes desired for the next generation adaptive optics (AO) wavefront sensors. The detector consists of a proximity focused microchannel plate (MCP) read out by multi-pixel application specific integrated circuit (ASIC) chips developed at CERN ("Medipix2") with individual pixels that amplify, discriminate and count input events. [...]
CERN-OPEN-2006-064.- Geneva : CERN, 2005 - 7 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 546 (2005) 263-269 Access to fulltext document: PDF;
Registre complet - Registres semblants
8.
(13)
Unique capabilities and applications of Microchannel Plate (MCP) detectors with Medipix/Timepix readout / Tremsin, A S (UC, Berkeley (main)) ; Vallerga, J V (UC, Berkeley (main))
The development of highly pixelated fast Medipix/Timepix readout enabled a large number of novel hybrid detectors, where incoming particles/photons are initially converted into a measureable charge, typically exceeding 1000 electrons. Among those possible converters are Microchannel plate (MCP) electron multipliers, which provide some unique capabilities when combined with bare Medipix/Timepix readout. [...]
2020 - 17 p. - Published in : Radiat. Meas. 130 (2020) 106228 Fulltext: PDF;
In : The Medipix/Timepix ASIC family and its applications, pp.106228
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9.
(13)
Development of a high-speed single-photon pixellated detector for visible wavelengths / Mac Raighne, Aaron (Glasgow U.) ; Teixeira, Antonio (CERN) ; Mathot, Serge (CERN) ; McPhate, Jason (UC, Berkeley) ; Vallerga, John (UC, Berkeley) ; Jarron, Pierre (CERN) ; Brownlee, Colin (The Marine Biological Association of the United Kingdom, Plymouth, UK) ; O’Shea, Val (Glasgow U.)
We present the development of a high-speed, single-photon counting, Hybrid Photo Detector (HPD). The HPD consists of a vacuum tube, containing the detector assembly, sealed with a transparent optical input window [...]
2009 - Published in : Nucl. Instrum. Methods Phys. Res., A 607 (2009) 166-168
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10.
(10)
Single-photon imaging detector with O (10) ps timing and sub-10 μm position resolutions / Fiorini, M (INFN, Ferrara ; Ferrara U.) ; Alozy, J (CERN) ; Bolognesi, M (INFN, Ferrara ; U. Ferrara (main)) ; Campbell, M (CERN) ; Ramusino, A Cotta (INFN, Ferrara ; U. Ferrara (main)) ; LLopart, X (CERN) ; Michel, T (MPI Sci. Light, Erlangen) ; Schifano, S F (INFN, Ferrara ; Ferrara U.) ; Tremsin, A (UC, Berkeley) ; Vallerga, J (UC, Berkeley)
We present the concept of a single-photon imager capable of detecting up to 10$^9$ photons per second with simultaneous measurements of position (5–10 μm resolution) and time (few tens of picosecond resolution) for each individual photon over an active area of 7 cm$^2$. The detector is based on a "hybrid" concept: a vacuum tube, with a transparent input window on which a suitable photocathode material is deposited, a micro-channel plate and a pixelated read-out anode designed in 65 nm CMOS technology. [...]
2018 - 10 p. - Published in : JINST 13 (2018) C12005
In : 20th International Workshop On Radiation Imaging Detectors, Sundsvall, Sweden, 24 - 28 Jun 2018, pp.C12005
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