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  • Instrumentation and Photography  (11)
  • 2000-2004  (11)
  • 1
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    A Sample Return Container with Hermetic Seal (2000)
    In:  CASI
    Details
    Publication Date: 2004-12-03
    Description: A sample return container is being developed by Honeybee Robotics to receive samples from a derivative of the Champollion/ST4 Sample Acquisition and Transfer Mechanism or other samplers and then hermetically seal samples for a sample return mission. The container is enclosed in a phase change material (PCM) chamber to prevent phase change during return and re-entry to earth. This container is designed to operate passively with no motors and actuators. Using the sampler's featured drill tip for interfacing, transfer-ring and sealing samples, the container consumes no electrical power and therefore minimizes sample temperature change. The circular container houses a few isolated canisters, which will be sealed individually for samples acquired from different sites or depths. The drill based sampler indexes each canister to the sample transfer position, below the index interface for sample transfer. After sample transfer is completed, the sampler indexes a seal carrier, which lines up seals with the openings of the canisters. The sampler moves to the sealing interface and seals the sample canisters one by one. The sealing interface can be designed to work with C-seals, knife edge seals and cup seals. Again, the sampler provides all sealing actuation. This sample return container and co-engineered sample acquisition system are being developed by Honeybee Robotics in collaboration with the JPL Exploration Technology program.
    Keywords: Instrumentation and Photography
    Type: Concepts and Approaches for Mars Exploration; Part 1; 182-183; LPI-Contrib-1062-Pt-1
    Format: text
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  • 2
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    Optical Characteristics of the Marshall Space Flight Center Solar Ultraviolet Magnetograph (2001)
    In:  Other Sources
    Details
    Publication Date: 2019-07-17
    Description: This paper will describe the scientific objectives of the MSFC SUMI project and the optical components that have been developed to meet those objectives. In order to test the scientific feasibility of measuring magnetic fields in the UV, a sounding rocket payload is being developed, This paper will describe the optical measurements that have been made on the SUMI telescope mirrors and polarization optics.
    Keywords: Instrumentation and Photography
    Type: UV/EUV and Visible Space Instrumentation for Astronomy and Solar Physics; Jul 29, 2001 - Aug 03, 2001; San Diego, CA; United States
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  • 3
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    Development of a Polarimeter for Magnetic Field Measurements in the Ultraviolet (2001)
    In:  Other Sources
    Details
    Publication Date: 2019-07-17
    Description: This paper will describe the polarizing optics that are being developed for an ultraviolet magnetograph (SUMI) which will be flown on a sounding rocket payload. With a limited observing program, the polarizing optics were optimized to make simultaneous observation at two magnetic lines CIV (155nm) and MgII (280). This paper will give a brief overview of the SUMI instrument, will describe the polarimeter that will be used in the sounding rocket program and will present some of the measurements that have been made on the (SUMI) polarization optics.
    Keywords: Instrumentation and Photography
    Type: Polarization Analysis and Measurement Analysis IV; Jul 29, 2001 - Aug 03, 2001; San Diego, CA; United States
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  • 4
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    The Marshall Space Flight Center Solar Utraviolet Magnetograph (2004)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: This paper will describe the objectives of the Marshall Space Flight Center (MSFC) Solar Ultraviolet Magnetograph Investigation (SUMI) and the optical components that have been developed to meet those objectives. In order to test the scientific feasibility of measuring magnetic fields in the W, a sounding rocket payload is being developed. This paper will discuss: (1) the scientific measurements that will be made by the SUMI sounding rocket program, (2) how the optics have been optimized for simultaneous measurements of two magnetic lines CIV (1550 Angstroms) and MgII (2800 Angstroms), and (3) the optical, reflectance, transmission and polarization measurements that have been made on the SUMI telescope mirrors and polarimeter.
    Keywords: Instrumentation and Photography
    Type: SPIE Astronomical Telescopes and Instrumentation 2004; Jun 21, 2004 - Jun 25, 2004; Glasgow, Scotland; United Kingdom
    Format: text
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  • 5
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    X-ray Spectrometer (2004)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: The X-ray Spectrometer (XRS) instrument is a revolutionary non-dispersive spectrometer that will form the basis for the Astro-E2 observatory to be launched in 2005. We have recently installed a flight spare X R S microcalorimeter spectrometer at the EBIT-I facility at LLNL replacing the XRS from the earlier Astro-E mission and providing twice the resolution. The X R S microcalorimeter is an x-ray detector that senses the heat deposited by the incident photon. It achieves a high energy resolution by operating at 0.06K and by carefully controlling the heat capacity and thermal conductance. The XRS/EBIT instrument has 32 pixels in a square geometry and achieves an energy resolution of 6 eV at 6 keV, with a bandpass from 0.1 to 12 keV (or more at higher operating temperature). The instrument allows detailed studies of the x-ray line emission of laboratory plasmas. The XRS/EBIT also provides an extensive calibration "library" for the Astro-E2 observatory.
    Keywords: Instrumentation and Photography
    Type: High Temperature Plasma Diagnostics 2004; Apr 18, 2004 - Apr 22, 2004; San Diego, CA; United States
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  • 6
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    NEA Multi-Chamber Sample Return Container with Hermetic Sealing (2000)
    In:  Other Sources
    Details
    Publication Date: 2019-07-17
    Description: A sample return container is being developed by Honeybee Robotics to receive samples from a derivative of the Champollion/ST4 Sample Acquisition and Transfer Mechanism or other samplers such as the 'Touch and Go' Surface Sampler (TGSS), and then hermetically seal the samples for a sample return mission. The container is enclosed in a phase change material (PCM) chamber to prevent phase change during return and re-entry to earth. This container is designed to operate passively with no motors and actuators. Using the rotation axis of the TGSS sampler for interfacing, transferring and sealing samples, the container consumes no electrical power and therefore minimizes sample temperature change. The circular container houses multiple isolated canisters, which will be sealed individually for samples acquired from different sites or depths. The TGSS based sampler indexes each canister to the sample transfer position, below the index interface for sample transfer. After sample transfer is completed, the sampler indexes a seal carrier, which lines up seals with the openings of the canisters. The sampler moves to the sealing interface and seals the sample canisters one by one. The sealing interface can be designed to work with C-seals, knife edge seals and cup seals. This sample return container is being developed by Honeybee Robotics in collaboration with the JPL Exploration Technology program. A breadboard system of the sample return container has been recently completed and tested. Additional information is contained in the original extended abstract.
    Keywords: Instrumentation and Photography
    Type: Near-Earth Asteroid Sample Return Workshop; 38-39; LPI-Contrib-1073
    Format: text
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  • 7
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    Energy Scales in X-Ray Microcalorimeters (2003)
    In:  CASI
    Details
    Publication Date: 2019-07-18
    Description: Microcalorimeter pulse shape characteristics, such as pulse height, decay time and rise time, are dependent on the detector temperature and bias as well as the photon energy and flux. We examine the nature of the temperature dependency by illuminating the ASTRO-E2 X-ray Spectrometer (XRS) microcalorimeter array with X-rays generated by electron impact on a range of foil targets. The resulting pulses are collected for a range of detector temperatures. We observe and model the temperature dependence of the pulse shape characteristics by fitting the data with non-linear pulse models. Our aim is to determine a robust method for correcting the energy scale obtained in ground calibration for slight differences in the operating conditions while in orbit.
    Keywords: Instrumentation and Photography
    Type: International Workshop on Low Temperature Detectors (LTD-10); Jul 07, 2003 - Jul 11, 2003; Genoa; Italy
    Format: application/pdf
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  • 8
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    Intrinsic Line Shape Measurements of the XRS Instrument on Astro-E2 (2004)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: The XRS instrument on the Astro-E2 observatory contains a substantially improved microcalorimeter array over the Astro-E mission. In addition to roughly a factor of 2 improvement in the detector resolution at 6 keV, the detector response is shown to be almost perfectly gaussian. We have made measurements of the detector response of the flight instrument, using a double crystal monochrometer at 4 and 8 keV, a 55-Fe internal conversion source, and x-ray induced fluorescence from a number of targets including Ti, Cu, and GaAs. The detector response has been measured to be entirely gaussian to at least 2 orders of magnitude down from the peak of the line or line complex. This is in sharp contrast to the results from the XRS on Astro-E where many channels exhibited excess counts on the high energy side of the spectral lines. Here we present details of the line shape measurement as well as the detector response as measured during the XRS ground calibration including details of the line fits and line models.
    Keywords: Instrumentation and Photography
    Type: HEAD Conference; Sep 08, 2004 - Sep 11, 2004; New Orleans, LA; United States
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  • 9
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    Position Sensitive Microcalorimeters (2004)
    In:  Other Sources
    Details
    Publication Date: 2019-07-18
    Description: A Position Sensitive Transition-Edge Sensor (PoST) is a microcalorimeter device capable of one-dimensional imaging spectroscopy. The device consists of two Transition-Edge Sensors (TESs) connected to the ends of a long X-ray absorbing strip. The energy of a photon hitting the absorber and the position of the absorption event along the strip is measured from the response in the two sensors by analyzing the relative signal sizes, pulse rise times, and the sum of the pulses measured at each sensor, We report on the recent PoST effort at Goddard for applications to large field of view, high-energy- resolution, X-ray astrophysics.
    Keywords: Instrumentation and Photography
    Type: SPIE Meeting; Jun 21, 2004 - Jun 25, 2004; Glasgow, Scotland; United Kingdom
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  • 10
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    Progress in the Development of Mo-Au Transition-Edge Sensors for X-Ray Spectroscopy (2000)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: X-ray microcalorimeters using transition-edge sensors (TES) show great promise for use in astronomical x-ray spectroscopy. We have obtained very high energy resolution (2.8 electronvolts at 1.5 kiloelectronvolts and 3.7 electronvolts at 3.3 kiloelectronvolts) in a large, isolated TES pixel using a Mo/Au proximity-effect bilayer on a silicon nitride membrane. We will discuss the performance and our characterization of that device. In order to be truly suitable for use behind an x-ray telescope, however, such devices need to be arrayed with a pixel size and focal-plane coverage commensurate with the telescope focal length and spatial resolution. Since this requires fitting the TES and its thermal link, a critical component of each calorimeter pixel, into a far more compact geometry than has previously been investigated, we must study the fundamental scaling laws in pixel optimization. We have designed a photolithography mask that will allow us to probe the range in thermal conductance that can be obtained by perforating the nitride membrane in a narrow perimeter around the sensor. This mask will also show the effects of reducing the TES area. Though we have not yet tested devices of the compact designs, we will present our progress in several of the key processing steps and discuss the parameter space of our intended investigations.
    Keywords: Instrumentation and Photography
    Type: GSFC-E-DAA-TN23171 , SPIE Conference on Hard X-Ray and Gamma-Ray Detector Physics; Jul 30, 2000 - Aug 01, 2000; San Diego, CA,; United States|Proceedings of SPIE: X-Ray and Gamma-Ray Instrumentation for Astronomy XI; 4140; 367-375
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