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Search Publications by: Carl D. Reintsema (Fed)

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Displaying 76 - 100 of 114

First Astronomical Use of Multiplexed Transition Edge Bolometers

February 1, 2002
Author(s)
D. J. Benford, Troy A. Ames, James A. Chervenak, Erich N. Grossman, Kent D. Irwin, S. A. De Kotwara, B. Maffci, S. H. Mosely, Francois Pajot, Thomas G. Phillips, Carl D. Reintsema, Cyrille Rioux, Rick A. Shafer, Johannes G. Staguhn, C. Vastel, George M. Voellmer
We present performance results based on the first astronomical use of mutiplexed superconducting bolometers. The Fabry-Perot Interferometer Bolometer Research Experiment (FIBRE) is a broadband submillimeter spectrometer that achieved first light in June

Time-Division SQUID Multiplexers

February 1, 2002
Author(s)
Kent D. Irwin, Leila R. Vale, Norman F. Bergren, Steven Deiker, Erich N. Grossman, Gene C. Hilton, John M. Martinis, Sae Woo Nam, Carl D. Reintsema, David A. Rudman, Martin Huber
SQUID multiplexers (MUX) make is possible to build arrays of thousands of low-temperature bolometers and microcalorimeters based on superconducting transition-edge sensors (TES) with a manageable number of readout channels. We discuss the technical

Design of an Active MM-Wave Concealed Object Imaging System

August 1, 2001
Author(s)
Nicholas Paulter, Erich N. Grossman, Gerard N. Stenbakken, Bryan C. Waltrip, Shalva Nolen, Carl D. Reintsema
The research and design of an active millimeter-wave concealed object imaging system is described. Several illumination and detection methods were analyzed via computer simulation to assess the effects of system parameters on the signal-to-noise ratio of

Properties of Cavity-Backed Slot-Ring Antennas at 95 GHZ

August 1, 2001
Author(s)
Shalva Nolen, Todd E. Harvey, Carl D. Reintsema, Erich N. Grossman
Slot-ring antennas with planar backshorts, designed for operation at 95 GHz, have been fabricated and their properties measured. Using optical lithography, we fabricated the slot-ring antennas, along with integrated niobium thin-film biolometers, on

Recent Developments in the NIST Cryogenic Thermal Transfer Standard Project

July 1, 2001
Author(s)
Thomas E. Lipe Jr., Joseph R. Kinard Jr., Carl D. Reintsema
We describe the development of a cryogenic thermal transfer standard (CTTS) from the first prototype in 1997 to the present version. A description of the superconducting transition-edge sensor (TES) and the development of a superconducting input

Improvements in the NIST Cryogenic Thermal Transfer Standard

April 1, 2001
Author(s)
Thomas E. Lipe Jr., Joseph R. Kinard Jr., Carl D. Reintsema
We describe the development of a cryogenic thermal transfer standard (CTTS) from the first prototype in 1997 to the present version. A description of the superconducting transition-edge sensor (TES) and the development of a superconducting input

Sub-Picowatt Precision Radiometry Using Superconducting Transition Edge Sensor Bolometers

March 1, 2001
Author(s)
James A. Chervenak, Erich N. Grossman, Carl D. Reintsema, Kent D. Irwin, S. H. Mosely, C. A. Allen
We describe a cryogenic radiometric calibration system suitable for high sensitivity, low power bolometers. The system uses a variable temperature blackbody source capable of temperatures of 4-20 K, whose output covers the sub-millimeter wavelength regime

Superconducting Nb DHEB Mixer Arrays for Far-Infrared Spectroscopy

February 12, 2001
Author(s)
Eyal Gerecht, Carl D. Reintsema, Erich N. Grossman, A. L. Betz, R. T. Boreiko
We are developing a heterodyne focal plane array with up to eight elements to study lines with frequencies of 2 THz and above. It is intended for studies of the interstellar medium and planetary atmospheres. Our fabricatin process utilizes selective ion

Multiplexed Readout of Superconducting Bolometers

December 31, 2000
Author(s)
D. J. Benford, C. A. Allen, James A. Chervenak, M. M. Freund, A. S. Kutyrev, S. H. Mosely, Rick A. Shafer, Johannes G. Staguhn, Erich N. Grossman, Gene C. Hilton, Kent D. Irwin, John M. Martinis, Sae Woo Nam, Carl D. Reintsema
Studies of astrophysical emission in the far-infrared and submillimeter require large arrays of detectors containing from hundreds to thousands of elements. A multiplexed readout is necessary for practical implementation of such arrays, and can be

Performance of Multiplexed SQUID Readout for Cryogenic Sensor Arrays

December 31, 2000
Author(s)
James A. Chervenak, Erich N. Grossman, Kent D. Irwin, John M. Martinis, Carl D. Reintsema, C. A. Allen, David I. Bergman, S. H. Mosely, Rick A. Shafer
We report on the implementation of a multiplexer that users superconducting quantum interference devices (SQUIDs) to read out low-impedance cryogenic detectors. Using prototype chips, a circuit was built which interfaces eight input SQUID channels with a

Superconducting Transition Edge Sensor Bolometer Arrays for Submillimeter Astronomy

May 3, 2000
Author(s)
D. J. Benford, C. A. Allen, A. S. Kutyrev, S. H. Mosely, Rick A. Shafer, James A. Chervenak, Erich N. Grossman, Kent D. Irwin, John M. Martinis, Carl D. Reintsema
Studies of astrophysical emission in the far-infrared and submillimeter will increasingly require large arrays of detectors containing hundreds to thousands of elements. The last few years have seen the increasing from one to a few tens of bolometers on

Improvements in the NIST Cryogenic Thermal Transfer Standard

May 1, 2000
Author(s)
Thomas E. Lipe Jr., Joseph R. Kinard Jr., Carl D. Reintsema
Recent improvements in the prototype of an ac-dc thermal transfer standard operating at cryogenic temperatures are described. Descriptions of two new transmission lines are presented, along with ac-dc difference measurements and Fast-Reversed DC (FRDC)

Superconducting Transition-Edge Bolometer Arrays for Ultra-Low Power Radiometry

May 1, 2000
Author(s)
Erich N. Grossman, James A. Chervenak, Kent D. Irwin, Carl D. Reintsema
A new generation of ultra-low power bolometer arrays is under development for low background infrared astronomy. This paper describes radiometric measurements on such bolometers using a cryogenic blackbody source with accurately calculable throughput

Antenna-Coupled Niobium Bolometers for MM-Wave Imaging Arrays

November 1, 1999
Author(s)
Shalva Nolen, Jonathan A. Koch, Nicholas Paulter, Carl D. Reintsema, Erich N. Grossman
Antenna-coupled thin-film niobium microbolometers designed for mm-wave imaging arrays have been fabricated and their electrical properties measured. The niobium bolometers are operated at room temperature and are located at the feeds of half-wave dipole

Superconducting Multiplexer for Arrays of Transition Edge Sensors

June 28, 1999
Author(s)
James A. Chervenak, Kent D. Irwin, Erich N. Grossman, John M. Martinis, Carl D. Reintsema, Martin Huber
We report the design and testing of an analog superconducting time-division multiplexer to instrument large format arrays of low-temperature bolometers and microcalorimeters. The circuit is designed to multiplex an array of superconducting quantum