R. S. Ottens

On-orbit performance of the adiabatic demagnetization refrigerator on XRISM

Peter Shirron, Mark O. Kimball, R. S. Ottens, Bryan L. James et autres

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Continuous adiabatic demagnetization refrigerator for the PRobe far-infrared mission for astrophysics (PRIMA)

Michael DiPirro, Peter Shirron, Mark O. Kimball, R. S. Ottens et autres

The PRobe far-Infrared Mission for Astrophysics (PRIMA) contains two instruments: an imager (PRIMAGER) and a multiband spectrometer (FIRESS). These two instruments require detector cooling to 100 mK and require parts of the optical train to operate at 1.0 K. From a base …

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On-orbit performance of the Adiabatic Demagnetization Refrigerator on XRISM

Peter Shirron, Mark O. Kimball, R. S. Ottens, Bryan L. James et autres

The X-ray Imaging and Spectroscopy Mission (XRISM) observatory was launched on Sep 7, 2023 from Tanegashima Space Center in Japan. Resolve, one its two instruments, performs high-resolution spectroscopy in the soft x-ray band (0.2-13 keV) using a 6x6 microcalorimeter array. The array …

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Clarification: Development of the thermal interface between the Dragonfly Mass Spectrometer and the DrACO Sample Delivery Carousel

Peter W. Barfknecht, Kelly A. Burch, Steven Cale, Brian J. Comber et autres

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Development of the thermal interface between the Dragonfly Mass Spectrometer and the DrACO Sample Delivery Carousel

Peter W. Barfknecht, Kelly A. Burch, Steven Cale, Brian J. Comber et autres

Icy celestial bodies are an exciting new frontier for surface exploration and in-situ sampling and analysis. These destinations are inherently cryogenic in nature, and each body presents unique challenges related to thermal design. The Dragonfly mission to Titan is one such example. …

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The James Webb Space Telescope Mission

Jonathan P. Gardner, John C. Mather, R. Abbott, James S. Abell et autres

Abstract Twenty-six years ago a small committee report, building on earlier studies, expounded a compelling and poetic vision for the future of astronomy, calling for an infrared-optimized space telescope with an aperture of at least 4 m. With the support of their …

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The James Webb Space Telescope Mission

Jonathan P. Gardner, John C. Mather, R. Abbott, James S. Abell et autres

Twenty-six years ago a small committee report, building on earlier studies, expounded a compelling and poetic vision for the future of astronomy, calling for an infrared-optimized space telescope with an aperture of at least $4m$. With the support of their governments in …

Characterization of JWST science performance from commissioning: National Aeronautics and Space Administration European Space Agency Canadian Space Agency

Jane R. Rigby, Marshall D. Perrin, Michael W. McElwain, Randy A. Kimble et autres

fr (code pays fourni par la source)

The Science Performance of JWST as Characterized in Commissioning

Jane R. Rigby, Marshall D. Perrin, Michael W. McElwain, Randy A. Kimble et autres

This paper characterizes the actual science performance of the James Webb Space Telescope (JWST), as determined from the six month commissioning period. We summarize the performance of the spacecraft, telescope, science instruments, and ground system, with an emphasis on differences from pre-launch …

Erratum: “Searches for Continuous Gravitational Waves from Nine Young Supernova Remnants” (2015, ApJ, 813, 39) *

J. Aasi, B. P. Abbott, R. Abbott, T. D. Abbott et autres

Equation (7) of the published article (Aasi et al. 2015) is in error; it should read (Equation presented). The upper limits on ò presented in the published article are unaffected by this error. Equation (8) of the published article is in error; …

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A Study of the Individual Contributions of Heat Generated by a XRISM/Resolve ADR Stage Magnet and Its Magnetic Shielding

R. S. Ottens, M. O. Kimball, Peter Shirron

A typical Adiabatic Demagnetization Refrigerator (ADR) has modest cooling power, on the order of a few microwatts. Thus, understanding heat loads going into and generated within the ADR is vital to its efficiency as well as the efficiency of the total cryogenic …

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Improvement on the Magnetic Shielding for the XRISM/Resolve Adiabatic Demagnetization Refrigerator

Mark O. Kimball, R. S. Ottens, Bryan L. James, Alexander Walts et autres

We report modeling, fabrication, cryogenic tensile testing, and magnetic field measurements of a shield around an adiabatic demagnetization stage (ADR) built for the XRISM/Resolve instrument. During testing of a near-identical stage built for Astro-H, a previous spaceflight mission, it was determined that …

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