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Your search keyword '"A. D. Tomasch"' showing total 14 results
Start Over Author "A. D. Tomasch" Topic astrophysics::instrumentation and methods for astrophysics
14 results on '"A. D. Tomasch"'

1. Cosmic-ray Isotope Measurements with HELIX

Author

Emma Ellingwood, Dietrich Müller, Makoto Tabata, M. Gebhard, Yu Chen, Thomas Rosin, David Hanna, J. A. Musser, Gerard Visser, S. P. Wakely, S. Coutu, S. L. Nutter, Stephane O’Brien, Patrick Allison, Ethan Schreyer, Monong Yu, Nahee Park, I. G. Wisher, Noah Green, Gergory Tarle, Issac Mognet, A. D. Tomasch, Brandon Kunkler, Tyler Werner, K. McBride, J. J. Beatty, Lucas Beaufore, Kelli Michaels, and Rostom Mbarek

Subjects
Physics, High energy, Light isotope, Isotope, Cherenkov detector, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic ray, Superconducting magnet, law.invention, Nuclear physics, law, Helix
Abstract

HELIX (High Energy Light Isotope eXperiment) is a balloon-borne experiment designed to measure the chemical and isotopic abundances of light cosmic ray nuclei. Detailed measurements by HELIX, especially of $^{10}$Be from 0.2 GeV/n to beyond 3 GeV/n, will provide an essential set of data for the study of propagation processes of the cosmic rays. HELIX consists of a 1 Tesla superconducting magnet with a high-resolution gas tracking system, time-of-flight detector, and a ring-imaging Cherenkov detector. The instrument is scheduled to have a long-duration balloon flight out of McMurdo Station during NASA's 2020/21 Antarctic balloon campaign. Here, we discuss the scientific goals and the design of the experiment, and report on its current status.

Published
2019
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2. Subpixel Response Measurement of Near‐Infrared Detectors

Author

Michael Schubnell, K. Beyerlein, Gregory Tarle, N. Barron, M. Borysow, Curtis Weaverdyck, A. D. Tomasch, Michael E. Brown, and Wolfgang Lorenzon

Subjects
Physics, Pixel, media_common.quotation_subject, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Field of view, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Large format, Photometry (optics), Space and Planetary Science, Sky, Sensitivity (control systems), Scale (map), Astrophysics::Galaxy Astrophysics, media_common, Remote sensing
Abstract

Wide-field survey instruments are used to efficiently observe large regions of the sky. To achieve the necessary field of view, and to provide a higher signal-to-noise ratio for faint sources, many modern instruments are undersampled. However, precision photometry with undersampled imagers requires a detailed understanding of the sensitivity variations on a scale much smaller than a pixel. To address this, a near-infrared spot projection system has been developed to precisely characterize near-infrared focal plane arrays and to study the effect of sub-pixel non uniformity on precision photometry. Measurements of large format near-infrared detectors demonstrate the power of this system for understanding sub-pixel response.

Published
2007
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3. The High-Energy Antimatter Telescope (HEAT): An instrument for the study of cosmic-ray positrons

Author

Dietrich Müller, C. R. Bower, J. A. Musser, Gregory Tarle, S. L. Nutter, D. M. Lowder, K. K. Tang, A. D. Tomasch, J. J. Beatty, J. Knapp, E. Torbet, Shawn McKee, E. Schneider, S. W. Barwick, Simon P. Swordy, G. A. de Nolfo, S. Coutu, D. Ellithorpe, D. J. Ficenec, and C. J. Chaput

Subjects
Physics, Nuclear and High Energy Physics, Spectrometer, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic ray, Scintillator, Particle identification, law.invention, Telescope, Nuclear physics, Transition radiation detector, law, Antimatter, Instrumentation
Abstract

The HEAT (High-Energy Antimatter Telescope) instrument has been developed for a series of observations in cosmic-ray astrophysics that require the use of a superconducting magnet spectrometer. This paper describes the first configuration of HEAT which is optimized for the detection of cosmic-ray electrons and positrons below 100 GeV. In addition to the spectrometer, a combination of time-of-flight scintillators, a transition radiation detector, and an electromagnetic shower counter, provides particle identification, energy measurement, and powerful discrimination against the large background of protons. The instrument was successfully flown aboard high-altitude balloons in 1994 and 1995. The design and construction of the spectrometer and of the detector systems are described, and the performance of the instrument is demonstrated with data obtained in flight.

Published
1997
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4. Performance of the HEAT spectrometer for cosmic ray electrons and positrons

Author

Dietrich Müller, S. L. Nutter, G. A. de Nolfo, A. D. Tomasch, Shawn McKee, E. Schneider, E. Torbet, D. M. Lowder, Gregory Tarle, S. W. Barwick, J. J. Beatty, S. Coutu, D. Ficenec, C. J. Chaput, K. K. Tang, D. Müller, C. R. Bower, J. A. Musser, D. Ellithorpe, and Simon P. Swordy

Subjects
Physics, Nuclear and High Energy Physics, Spectrometer, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic ray, Superconducting magnet, Electron, Particle identification, Nuclear physics, Positron, Hodoscope, Transition radiation, High Energy Physics::Experiment, Instrumentation
Abstract

A new detector system for observations of cosmic ray electrons and positrons has been flown on a high altitude balloon in May 1994. The instrumentation includes a superconducting magnet and a drift tube hodoscope for the measurement of particle rigidities, and a combination of transition radiation detectors, shower counters and a time-of-flight system for particle identification and energy measurement. We will discuss the performance of the individual components and demonstrate that a reliable identification of the rare positron component has been achieved up to 50 GeV.

Published
1995
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5. High resolution drift tube hodoscopes for cosmic ray studies

Author

A. D. Tomasch

Subjects
Astroparticle physics, Physics, Nuclear and High Energy Physics, Spacecraft, Spectrometer, business.industry, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic ray, Superconducting magnet, law.invention, Nuclear physics, Telescope, Antiproton, law, Antimatter, business, Instrumentation
Abstract

Thin-walled drift tubes have been used in conjunction with a superconducting magnet for the rigidity spectrometer aboard two recent particle astrophysics experiments flown on high altitude balloons: PBAR (a low energy antiproton search) and SMILI (the superconducting magnet instrument for light isotopes). The HEAT (high energy antimatter telescope) experiment currently under construction will also employ this technology. This paper reviews the design, construction, and in-flight operation of the PBAR and SMILI systems, as well as the design of the HEAT system which will be used in conjunction with a new superconducting magnet aboard an upcoming series of balloon experiments to study high energy positrons and antiprotons in the cosmic radiation. In addition to a brief account of the scientific goals for these flights, the prospects for future application of this technology to long duration exposures aboard antarctic balloon flights and spacecraft are discussed.

Published
1992
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6. Probing Dark Energy via Weak Gravitational Lensing with the SuperNova Acceleration Probe (SNAP)

Author

Greg Aldering, M. Hoff, Ralph C. Bohlin, S. L. Mufson, Andrew Szymkowiak, L. Gladney, O. Le Fevre, D. Cole, Nick Mostek, N. Palaio, Susana E. Deustua, Wolfgang Lorenzon, P. Limon, M. L. Lampton, Dragan Huterer, Scott Dodelson, N. Kuznetsova, Alain Mazure, H. Shuka, S. T. Holland, F. Stabenau, Josh Frieman, Roger Smith, Guofeng Wang, T. Davies, B. Besuner, Martin White, A. Weinstein, Roger F. Malina, Jason Rhodes, J. Annis, R. Lafever, G. Kushner, J. Albert, H. Lin, Saul Perlmutter, Lars Bergström, G. Smadja, R. Pain, Eric V. Linder, B. Krieger, John Peoples, A. D. Tomasch, B. Bigelow, J. Musser, Peter Nugent, A. Refregier, William W. Craig, L. Marian, H. von der Lippe, Michael Seiffert, D. E. Groom, Keith Taylor, Timothy A. McKay, Eric Prieto, Chris Bebek, C. R. Bower, D. Peterson, Albert Stebbins, G. Tarle, Stephen Bailey, J. I. Lamoureux, Christopher Stoughton, J.-P. Walder, F. DeJongh, Alex G. Kim, W. Emmet, Eugene D. Commins, V. Scarpine, M. Frerking, Gary Bernstein, A. Goobar, Douglas L. Tucker, Michael Schubnell, C. T. Day, Andre Tilquin, D. Figer, Shawn McKee, Edvard Mörtsell, Rahman Amanullah, M. Deharveng, Dominique Fouchez, W. C. Wester, D. Rabinowitz, M.E. Huffer, R. Nakajima, J. Snyder, T. Dobson, Armin Karcher, Stéphane Basa, Michael L. Brown, David H. Pankow, Steven E. Kahn, Anne Ealet, C. Juramy, Steve Kent, A. S. Fruchter, S. C. Loken, G. Goldhaber, Bhuvnesh Jain, Alain Bonissent, M. Aumeunier, Philip J. Marshall, J. P. Marriner, M. E. Levi, E. Barrelet, P. Jelinsky, Michael Sholl, A. L. Spadafora, L. Hui, T. Diehl, B. Mcginnis, Richard Ellis, B. Mobqsher, V. Lebrun, S. Allam, William Carithers, George F. Smoot, Richard Massey, Roger Blandford, Pierre Astier, W. Althouse, William F. Kolbe, D. W. Gerdes, D. Rusin, Natalie A. Roe, Ramon Miquel, N. Morgan, H. Heetderks, Manfred Bester, D. Vincent, M. Campbell, C. Baltay, Hakeem M. Oluseyi, Flores, Sylvie, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), SNAP, Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Point spread function, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, [SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph], 01 natural sciences, law.invention, Telescope, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], law, 0103 physical sciences, 010306 general physics, Weak gravitational lensing, Physics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Astrophysics (astro-ph), Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Redshift, Galaxy, Supernova, [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Dark energy, Joint Dark Energy Mission
Abstract

SNAP is a candidate for the Joint Dark Energy Mission (JDEM) that seeks to place constraints on the dark energy using two distinct methods. The first, Type Ia SN, is discussed in a companion white paper. The second method is weak gravitational lensing, which relies on the coherent distortions in the shapes of background galaxies by foreground mass structures. The excellent spatial resolution and photometric accuracy afforded by a 2-meter space-based observatory are crucial for achieving the high surface density of resolved galaxies, the tight control of systematic errors in the telescope's Point Spread Function (PSF), and the exquisite redshift accuracy and depth required by this project. These are achieved by the elimination of atmospheric distortion and much of the thermal and gravity loads on the telescope. The SN and WL methods for probing dark energy are highly complementary and the error contours from the two methods are largely orthogonal., 17 pages, 6 figures; White paper to the Dark Energy Task Force

Published
2005

7. SNAP Telescope

Author

Michael J. Sholl, Michael L. Lampton, Greg Aldering, W. Althouse, R. Amanullah, James T. Annis, Pierre Astier, Charles Baltay, E. Barrelet, Stephane Basa, Christopher J. Bebek, Lars Bergstrom, Gary Bernstein, Manfred Bester, Bruce C. Bigelow, Roger Blandford, Ralph C. Bohlin, Alain Bonissent, Charles R. Bower, Mark L. Brown, Myron Campbell, William C. Carithers, Jr., Eugene D. Commins, W. Craig, C. Day, F. DeJongh, Susana E. Deustua, T. Diehl, S. Dodelson, Anne Ealet, Richard S. Ellis, W. Emmet, D. Fouchez, Josh Frieman, Andrew Fruchter, D. Gerdes, L. Gladney, Gerson Goldhaber, Ariel Goobar, Donald E. Groom, Henry D. Heetderks, M. Hoff, Stephen E. Holland, M. Huffer, L. Hui, Dragan Huterer, B. Jain, Patrick N. Jelinsky, Armin Karcher, Steven M. Kahn, Steven M. Kent, Alex G. Kim, William F. Kolbe, B. Krieger, G. Kushner, N. Kuznetsova, Robin E. Lafever, J. I. Lamoureux, Olivier Le Fevre, Michael E. Levi, P. Limon, Huan Lin, Eric V. Linder, Stewart C. Loken, W. Lorenzon, Roger Malina, J. Marriner, P. Marshall, R. Massey, Alain Mazure, Timothy A. McKay, Shawn P. McKee, Ramon Miquel, Nicholas Morgan, E. M÷rtsell, Nick Mostek, Stuart Mufson, J. A. Musser, Peter E. Nugent, Hakeem M. Oluseyi, Reynald Pain, Nick P. Palaio, David H. Pankow, John Peoples, Jr., Saul Perlmutter, Eric Prieto, David Rabinowitz, Alexandre Refregier, Jason Rhodes, Natalie A. Roe, D. Rusin, V. Scarpine, Michael S. Schubnell, G‰rard Smadja, Roger M. Smith, George F. Smoot, Jeffrey A. Snyder, Anthony Spadafora, A. Stebbins, Christopher Stoughton, Andrew Szymkowiak, Gregory Tarl‰, Keith Taylor, A. Tilquin, Andrew D. Tomasch, Douglas Tucker, D. Vincent, Henrik von der Lippe, Jean-Pierre Walder, Guobin Wang, W. Wester, and Mather, John C.

Subjects
Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics
Abstract

Mission requirements, the baseline design, and optical systems budgets for the SuperNova/Acceleration Probe (SNAP) telescope are presented. SNAP is a proposed space-based experiment designed to study dark energy and alternate explanations of the acceleration of the universe’s expansion by performing a series of complementary systematics-controlled astrophysical measurements. The goals of the mission are a Type Ia supernova Hubble diagram and a wide-field weak gravitational lensing survey. A 2m widefield three-mirror telescope feeds a focal plane consisting of 36 CCDs and 36 HgCdTe detectors and a high-efficiency, low resolution integral field spectrograph. Details of the maturing optical system, with emphasis on structural stability during terrestrial testing as well as expected environments during operations at L2 are discussed. The overall stray light mitigation system, including illuminated surfaces and visible objects are also presented.

Published
2004

8. An integral field spectrograph for SNAP

Author

Anne Ealet, Eric Prieto, Alain Bonissent, Roger Malina, G‰rard Smadja, A. Tilquin, Gary Bernstein, Stephane Basa, D. Fouchez, Olivier Le Fevre, Alain Mazure, Greg Aldering, R. Amanullah, Pierre Astier, E. Barrelet, Christopher J. Bebek, Lars Bergstrom, Manfred Bester, Roger Blandford, Ralph C. Bohlin, Charles R. Bower, Mark L. Brown, Myron Campbell, William C. Carithers, Jr., Eugene D. Commins, W. Craig, C. Day, F. DeJongh, Susana E. Deustua, H. T. Diehl, S. Dodelson, Richard S. Ellis, M. Emmet, Josh Frieman, Andrew Fruchter, D. Gerdes, L. Gladney, Gerson Goldhaber, Ariel Goobar, Donald E. Groom, Henry D. Heetderks, M. Hoff, Stephen E. Holland, M. Huffer, L. Hui, Dragan Huterer, B. Jain, Patrick N. Jelinsky, Armin Karcher, Steven M. Kent, Steven M. Kahn, Alex G. Kim, William F. Kolbe, B. Krieger, G. Kushner, N. Kuznetsova, Robin E. Lafever, J. I. Lamoureux, Michael L. Lampton, Michael E. Levi, P. Limon, Huan Lin, Eric V. Linder, Stewart C. Loken, W. Lorenzon, J. Marriner, P. Marshall, R. Massey, Timothy A. McKay, Shawn P. McKee, Ramon Miquel, Nicholas Morgan, E. M÷rtsell, Nick Mostek, Stuart Mufson, J. A. Musser, Peter E. Nugent, Hakeem M. Oluseyi, Reynald Pain, Nick P. Palaio, David H. Pankow, John Peoples, Jr., Saul Perlmutter, David Rabinowitz, Alexandre Refregier, Jason Rhodes, Natalie A. Roe, D. Rusin, V. Scarpine, Michael S. Schubnell, Michael J. Sholl, Roger M. Smith, George F. Smoot, Jeffrey A. Snyder, Anthony Spadafora, A. Stebbins, Christopher Stoughton, Andrew Szymkowiak, Gregory Tarl‰, Keith Taylor, Andrew D. Tomasch, Douglas Tucker, Henrik von der Lippe, D. Vincent, Jean-Pierre Walder, Guobin Wang, W. Wester, and Mather, John C.

Subjects
Physics, business.industry, Measure (physics), Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Redshift, Acceleration, Optics, Integral field spectrograph, Calibration, Joint Dark Energy Mission, Astrophysics::Earth and Planetary Astrophysics, Spectral resolution, business, Spectrograph, Astrophysics::Galaxy Astrophysics
Abstract

A well-adapted visible and infrared spectrograph has been developed for the SNAP (SuperNova/Acceleration Probe) experiment proposed for JDEM. The primary goal of this instrument is to ensure the control of Type Ia supernovae. The spectrograph is also a key element for calibration and is able to measure redshift of some thousands of galaxy spectra both in visible and IR. An instrument based on an integral field method with the powerful concept of imager slicing has been designed and is presented. We present the current design and expected performances. We show that with the current optimization and the proposed technology, we expect the most sensitive instrument proposed on this kind of mission. We recall the readiness of the concept and of the slicer technology thanks to large prototyping efforts performed in France which validate the proposition

Published
2004

9. New measurement of the cosmic-ray positron fraction from 5 to 15 GeV

Author

S. L. Nutter, S. Coutu, Dietrich Müller, Allan Labrador, A. D. Tomasch, C. R. Bower, S. P. Swordy, Michael Schubnell, A. Bhattacharyya, Michael DuVernois, J. A. Musser, S. Minnick, Gregory Tarle, Shawn McKee, and J. J. Beatty

Subjects
Physics, Astrophysics::High Energy Astrophysical Phenomena, Dark matter, Astrophysics (astro-ph), Astrophysics::Instrumentation and Methods for Astrophysics, General Physics and Astronomy, Flux, FOS: Physical sciences, Cosmic ray, Charge (physics), Astrophysics, Flux ratio, Nuclear physics, Positron, Fraction (mathematics), High Energy Physics::Experiment
Abstract

We present a new measurement of the cosmic-ray positron fraction at energies between 5 and 15 GeV with the balloon-borne HEAT-pbar instrument in the spring of 2000. The data presented here are compatible with our previous measurements, obtained with a different instrument. The combined data from the three HEAT flights indicate a small positron flux of non-standard origin above 5 GeV. We compare the new measurement with earlier data obtained with the HEAT-e+- instrument, during the opposite epoch of the solar cycle, and conclude that our measurements do not support predictions of charge sign dependent solar modulation of the positron abundance at 5 GeV., Comment: accepted for publication in PRL

Published
2004

10. SNAP telescope: an update

Author

Ralph C. Bohlin, D. Fouchez, Edvard Mörtsell, Robert Besuner, Alex G. Kim, J. Bercovitz, Nick Mostek, Michael H. Krim, Armin Karcher, Michael Schubnell, Myron Campbell, Keith Taylor, William Carithers, Alain Mazure, S. Mufson, William Emmett, Charles R. Bower, Eric V. Linder, Michael Levi, Rahman Amanullah, N. Morgan, J. A. Musser, Carl W. Akerlof, R. Lafever, Stéphane Basa, Timothy A. McKay, Guobin Wang, George F. Smoot, Henrik von der Lippe, Ariel Goobar, Peter Nugent, D. Vincent, Donald E. Groom, Pierre Astier, Daniel Levin, Jean-Pierre Walder, William E. Johnston, N. Palaio, Susana E. Deustua, William F. Kolbe, J. I. Lamoureux, Gary Berstein, J.F. Genat, Ramon Miquel, Stephen Holland, David H. Pankow, J. Snyder, H. Heetderks, Saul Perlmutter, Andre Tilquin, M. Eriksson, S. C. Loken, E. Barrelet, Greg Aldering, G. Smadja, R. W. Kadel, C. Baltay, Richard S. Ellis, Chris Bebek, Hakeem M. Oluseyi, David Rabinowitz, Dragan Huterer, Jason Rhodes, Andrew Szymkowiak, Manfred Bester, Lars Bergström, C. T. Day, Roger Smith, Eugene D. Commins, Reynald Pain, A. L. Spadafora, G. Goldhaber, Shawn McKee, Roger F. Malina, Andrew S. Fruchter, A. D. Tomasch, Anne Ealet, Gregory Tarle, R. DiGennaro, Alain Bonissent, Alexandre Refregier, Michael Sholl, Eric Prieto, Natalie A. Roe, Oliver LeFevre, Michael Lampton, and MacEwen, Howard A.

Subjects
Physics, Wavefront, business.industry, Stray light, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, Anastigmat, Astronomy, Three-mirror anastigmat, Astrophysics::Cosmology and Extragalactic Astrophysics, Orbital mechanics, Redshift, law.invention, Telescope, Optics, law, Astrophysics::Solar and Stellar Astrophysics, Adaptive optics, business, Astrophysics::Galaxy Astrophysics
Abstract

We present the baseline telescope design for the telescope for the SuperNova/Acceleration Probe (SNAP) space mission. SNAP’s purpose is to determine expansion history of the Universe by measuring the redshifts, magnitudes, and spectral classifications of thousands of supernovae with unprecedented accuracy. Discovering and measuring these supernovae demand both a wide optical field and a high sensitivity throughout the visible and near IR wavebands. We have adopted the annular-field three-mirror anastigmat (TMA) telescope configuration, whose classical aberrations (including chromatic) are zero. We show a preliminary optmechanical design that includes important features for stray light control and on-orbit adjustment and alignment of the optics. We briefly discuss stray light and tolerance issues, and present a preliminary wavefront error budget for the SNAP Telescope. We conclude by describing some of the design tasks being carried out during the current SNAP research and development phase.

Published
2004
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11. Weak lensing from space I: instrumentation and survey strategy

Author

S. Harris, H. von der Lippe, Dominique Fouchez, Lars Bergström, C. T. Day, Alex G. Kim, B. Bigelow, Chris Bebek, Myron Campbell, A. L. Spadafora, Saul Perlmutter, Eric Prieto, R. Pratt, M. L. Lampton, S.E. Holland, G. Smadja, A. S. Fruchter, Armin Karcher, B. Krieger, J.-P. Walder, N. Morgan, Gary Bernstein, Peter Nugent, C. Baltay, Eric V. Linder, Shawn McKee, Ariel Goobar, Justin Albert, William E. Johnston, Timothy A. McKay, Hakeem M. Oluseyi, N. Palaio, Susana E. Deustua, Greg Aldering, J. Bercovitz, Nick Mostek, George F. Smoot, David Rabinowitz, Roger F. Malina, Pierre Astier, David Bacon, Keith Taylor, C. R. Bower, William F. Kolbe, R. Lafever, Andrew Szymkowiak, H. Heetderks, David H. Pankow, A. D. Tomasch, G. Kushner, J. A. Musser, Wolfgang Lorenzon, Peter Harvey, D. Rusin, Natalie A. Roe, W. Emmet, Anne Ealet, Roger Smith, S. C. Loken, Ramon Miquel, Edvard Mörtsell, Gerson Goldhaber, E. Barrelet, R. DiGennaro, Alain Bonissent, M. E. Levi, Andre Tilquin, S. L. Mufson, Alexandre Refregier, M. Eriksson, Michael Sholl, Manfred Bester, Richard S. Ellis, Bhuvnesh Jain, D. W. Gerdes, William Carithers, Richard Massey, L. Gladney, D. Vincent, Guofeng Wang, Alain Mazure, Michael Schubnell, Carl W. Akerlof, Rahman Amanullah, Eugene D. Commins, Reynald Pain, Donald E. Groom, J. F. Genat, K. Robinson, Gregory Tarle, Dragan Huterer, Michael E. Brown, J. I. Lamoureux, Ralph C. Bohlin, J. Snyder, N. Kuznetsova, Jason Rhodes, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), California Institute of Technology (CALTECH), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Department of Mathematics [Berkeley], University of California [Berkeley] (UC Berkeley), University of California (UC)-University of California (UC), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), School of Engineering [Edinburgh], University of Edinburgh, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Department of Physics, Stockholm University, Lawrence Berkeley National Laboratory [Berkeley] (LBNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Harvard-Smithsonian Center for Astrophysics (CfA), Harvard University-Smithsonian Institution, Dispositifs et Instrumentation en Optoélectronique et micro-ondes (DIOM), Université Jean Monnet - Saint-Étienne (UJM), Dept Mat Sci & Engn, Zhejiang University, California Institute of Technology (CALTECH)-NASA, University of California [Berkeley], University of California-University of California, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Harvard University [Cambridge]-Smithsonian Institution, DIOM (DIOM), and Université Jean Monnet [Saint-Étienne] (UJM)

Subjects
Point spread function, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics::High Energy Astrophysical Phenomena, Dark matter, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Cosmology, law.invention, Telescope, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Spitzer Space Telescope, law, 0103 physical sciences, Dark energy, Astrophysics::Solar and Stellar Astrophysics, 010303 astronomy & astrophysics, Instrumentation, Weak gravitational lensing, Astrophysics::Galaxy Astrophysics, Physics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Astrophysics (astro-ph), Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astronomy and Astrophysics, Supernova
Abstract

A wide field space-based imaging telescope is necessary to fully exploit the technique of observing dark matter via weak gravitational lensing. This first paper in a three part series outlines the survey strategies and relevant instrumental parameters for such a mission. As a concrete example of hardware design, we consider the proposed Supernova/Acceleration Probe (SNAP). Using SNAP engineering models, we quantify the major contributions to this telescope's Point Spread Function (PSF). These PSF contributions are relevant to any similar wide field space telescope. We further show that the PSF of SNAP or a similar telescope will be smaller than current ground-based PSFs, and more isotropic and stable over time than the PSF of the Hubble Space Telescope. We outline survey strategies for two different regimes - a ``wide'' 300 square degree survey and a ``deep'' 15 square degree survey that will accomplish various weak lensing goals including statistical studies and dark matter mapping., 25 pages, 8 figures, 1 table, replaced with Published Version

Published
2004
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12. SNAP Telescope

Author

Michael L. Lampton, Carl W. Akerlof, Greg Aldering, R. Amanullah, Pierre Astier, E. Barrelet, Christopher Bebek, Lars Bergstrom, John Bercovitz, G. Bernstein, Manfred Bester, Alain Bonissent, C. R. Bower, William C. Carithers, Jr., Eugene D. Commins, C. Day, Susana E. Deustua, Richard S. DiGennaro, Anne Ealet, Richard S. Ellis, Mikael Eriksson, Andrew Fruchter, Jean-Francois Genat, Gerson Goldhaber, Ariel Goobar, Donald E. Groom, Stewart E. Harris, Peter R. Harvey, Henry D. Heetderks, Steven E. Holland, Dragan Huterer, Armin Karcher, Alex G. Kim, William F. Kolbe, B. Krieger, R. Lafever, J. Lamoureux, Michael E. Levi, Daniel S. Levin, Eric V. Linder, Stewart C. Loken, Roger Malina, R. Massey, Timothy McKay, Shawn P. McKee, Ramon Miquel, E. Mortsell, N. Mostek, Stuart Mufson, J. A. Musser, Peter E. Nugent, Hakeem M. Oluseyi, Reynald Pain, Nicholas P. Palaio, David H. Pankow, Saul Perlmutter, R. Pratt, Eric Prieto, Alexandre Refregier, J. Rhodes, Kem E. Robinson, N. Roe, Michael Sholl, Michael S. Schubnell, G. Smadja, George F. Smoot, A. Spadafora, Gregory Tarle, Andrew D. Tomasch, H. von der Lippe, R. Vincent, J.-P. Walder, Guobin Wang, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), MacEwen, Howard A., and Flores, Sylvie

Subjects
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], 010309 optics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics::High Energy Astrophysical Phenomena, 0103 physical sciences, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, [SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph], 010303 astronomy & astrophysics, 01 natural sciences, Astrophysics::Galaxy Astrophysics
Abstract

The SuperNova/Acceleration Probe (SNAP) mission will require a two-meter class telescope delivering diffraction limited images spanning a one degree field in the visible and near infrared wavelength regime. This requirement, equivalent to nearly one billion pixel resolution, places stringent demands on its optical system in terms of field flatness, image quality, and freedom from chromatic aberration. We discuss the advantages of annular-field three-mirror anastigmat (TMA) telescopes for applications such as SNAP, and describe the features of the specific optical configuration that we have baselined for the SNAP mission. We discuss the mechanical design and choice of materials for the telescope. Then we present detailed ray traces and diffraction calculations for our baseline optical design. We briefly discuss stray light and tolerance issues, and present a preliminary wavefront error budget for the SNAP Telescope. We conclude by describing some of tasks to be carried out during the upcoming SNAP research and development phase.

Published
2002
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13. High-energy Antimatter Telescope (HEAT): basic design and performance

Author

D. Ficenec, C. R. Bower, J. J. Beatty, C. J. Chaput, J. A. Musser, D. M. Lowder, D. Mueller, D. Ellithorpe, K. K. Tang, G. A. de Nolfo, S. Coutu, S. W. Barwick, J. Knapp, E. Schneider, Gregory Tarle, Simon P. Swordy, A. Bhattacharyya, E. Torbet, S. L. Nutter, A. D. Tomasch, and Steven Matthew McKee

Subjects
Physics, PAMELA detector, Astrophysics::High Energy Astrophysical Phenomena, Optical engineering, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Radiation, law.invention, Nuclear physics, Telescope, Transition radiation detector, Hodoscope, law, Antiproton, Antimatter
Abstract

The high-energy antimatter telescope (HEAT) instrument has been flown successfully by high-altitude balloon in 1994 and 1995, in a configuration optimized for the detection and identification of cosmic-ray electrons and positrons at energies from about 1 GeV up to 50 GeV and beyond. It consists of a two-coil superconducting magnet and a precision drift-tube tracking hodoscope, complemented with a time-of-flight system, a transition radiation detector and an electromagnetic shower counter. We review the design criteria for optimal e+/- detection and identification, and assess the instruments' performance and background rejection during its first two flights. We also review the adaptation of HEAT for measurements of high-energy cosmic- ray antiprotons and for isotopic composition studies.© (1996) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Published
1996
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14. SNAP Satellite Focal Plane Development

Author

Eric Prieto, J.-P. Walder, J. F. Genat, Shawn McKee, D. Fouchez, Derek Levin, N. Palaio, Susana E. Deustua, Peter Nugent, Gregory Tarle, D. Vincent, Stéphane Basa, J. Lamoureaux, Steven E. Holland, H. Heetderks, Roger F. Malina, Greg Aldering, David Rabinowitz, G. Goldhaber, R. W. Kadel, Andrew Szymkowiak, C. Baltay, W. Emmett, A. Tilquin, Hakeem M. Oluseyi, A. D. Tomasch, Anne Ealet, R. DiGennaro, H. von der Lippe, Alain Bonissent, Armin Karcher, Roger Smith, Lars Bergström, C. T. Day, Alexandre Refregier, Michael Sholl, Myron Campbell, J. Bercovitz, Nick Mostek, Natalie A. Roe, Guofeng Wang, A. S. Fruchter, A. L. Spadafora, Alain Mazure, Ralph C. Bohlin, M. L. Lampton, David H. Pankow, R. Lafever, Eugene D. Commins, N. Morgan, Carl W. Akerlof, Reynald Pain, A. Goobar, Edvard Mörtsell, Eric V. Linder, Keith Taylor, Manfred Bester, C. R. Bower, Timothy A. McKay, Jason Rhodes, W. Johnson, S. Mufson, J. A. Musser, J. Snyder, G. Smadja, Chris Bebek, Alex G. Kim, William Carithers, S. C. Loken, E. Barrelet, Richard S. Ellis, O. Lefevre, Saul Perlmutter, M. Eriksson, G.P. Berstein, Michael Schubnell, Rahman Amanullah, Donald E. Groom, Ramon Miquel, Pierre Astier, D. Huterer, William F. Kolbe, Michael Levi, George F. Smoot, and Siegmund, Oswald H. W.

Subjects
Physics, business.industry, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, law.invention, Square degree, Telescope, Acceleration, ASIC CCD optical filters focal plane detectors HgCdTe InGaAs spectrograph, Cardinal point, Optics, law, Satellite, Optical filter, business, Spectrograph
Abstract

The proposed SuperNova/Acceleration Probe (SNAP) mission will have a two-meter class telescope delivering diffraction-limited images to an instrumented 0.7 square degree field in the visible and near-infrared wavelength regime. The requirements for the instrument suite and the present configuration of the focal plane concept are presented. A two year R&D phase, largely supported by the Department of Energy, is just beginning. We describe the development activities that are taking place to advance our preparedness for mission proposal in the areas of detectors and electronics.

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