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Displaying 226 - 250 of 329

T c Suppression in Superconducting Films for use in Transition Edge Sensors

June 1, 2003
Author(s)
Steven Deiker, Gene C. Hilton, Kent D. Irwin, William Rippard, Steve Ruggiero, Leila R. Vale, B. A. Young
Transition edge sensor (TES) microcalorimeters have proved their value as photon detectors in several wavelength regimes. The central elecement of a TES is a superconducting film with a transition temperature designed to be at a specific temperature

Time-Division SQUID Multiplexers for Transition-Edge Sensors

January 14, 2003
Author(s)
Kent D. Irwin, James A. Beall, Joern Beyer, Steven Deiker, W.Bertrand (Randy) Doriese, S. L. Ferreira, Gene C. Hilton, Sae Woo Nam, Carl D. Reintsema, Joel Ullom, Leila R. Vale
Microcalorimeters and bolometers based on superconducting transition-edge sensors (TES) are important tools for the detection of photons from millimeter waves through gamma rays, and for applications ranging from materials analysis to astronomy. There is a

The Development of Microcalorimeter EDS Arrays

November 1, 2002
Author(s)
Kent D. Irwin, James A. Beall, Steven Deiker, Gene C. Hilton, L. King, Sae Woo Nam, Dale Newbury, Carl D. Reintsema, John A. Small, Leila R. Vale
High-energy-resolution cryogenic microcalorimeters are a powerful new tool for x-ray microanalysis. With demonstrated energy resolution 20 times better than with conventional semiconductor EDS, microcalorimeters are useful in applications such as nanoscale

SCUBA-2: Application of LTD Technology

February 1, 2002
Author(s)
William Duncan, Wayne Holland, Damian Audley, D R. Kelly, Tully Peacock, Peter Hastings, Michael MacIntosh, Kent D. Irwin, Sae Woo Nam, Gene C. Hilton, Steven Deiker, Anthony Walton, Alan Gundlach, William Parkes, Camilla Dunare, Peter Ade, Ian Robson
We outline the need for SCUBA 2, its goals and specifications. We give reasons for the choice of the low temperature detector technology of TES arrays and SQUID multiplexers and describe our pixel and array architecture and progress on the project to date.

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

Energy Dispersive X-ray spectromety by Microcalorimetry for the SEM

January 1, 2002
Author(s)
Dale E. Newbury, David A. Wollman, Sae Woo Nam, Gene C. Hilton, Kent D. Irwin, John A. Small, John M. Martinis
Analytical x-ray spectrometry for electron beam instruments has been significantly advanced with the development of the NIST microcalorimeter energy dispersive x-ray spectrometer (mcal EDS). The mcal EDS operates by measuring the temperature rise when a

TES Detector Noise Limited Readout Using SQUID Multiplexers

January 1, 2002
Author(s)
Johannes G. Staguhn, C. A. Allen, D. J. Benford, James A. Chervenak, M. M. Freund, S. A. Khan, A. S. Kutyrev, S. H. Mosely, Rick A. Shafer, Steven Deiker, Erich N. Grossman, Gene C. Hilton, Kent D. Irwin, John M. Martinis, Sae Woo Nam, David A. Rudman, David A. Wollman
The availability of superconducting Transition Edge Sensors (TES) with large numbers of individual detector pixels requires multiplexers for efficient readout. The usage of multiplexers limits the number of wires needed between the cryogenic electronics

Progress Towards Arrays of Microcalorimeter X-ray Detectors

September 1, 2001
Author(s)
Sae Woo Nam, David A. Wollman, Dale Newbury, Gene C. Hilton, Kent D. Irwin, David A. Rudman, Steven Deiker, Norman F. Bergren, John M. Martinis
The high performance of single-pixel microcalorimeter EDS (υcal EDS) has been shown to be very useful for a variety of microanalysis cases. The primary advantage of υcal EDS over conventional EDS is that factor of 25 improvement in energy resolution (3 eV

High Performance Transition-Edge-Sensor Based Detectors

June 1, 2001
Author(s)
Gene C. Hilton, Steven Deiker, Kent D. Irwin, Sae Woo Nam, John M. Martinis, David A. Wollman
High performance detectors utilizing transition-edge sensors (TES) have been demonstrated for photon energies ranging from the infrared to the x-ray. In the soft x-ray band we have demonstrated the highest energy resolution yet achieved for any energy

DC SQUID Series Array Amplifiers with 120 MHz Bandwidth

March 1, 2001
Author(s)
Martin Huber, Patricia A. Neil, R. G. Benson, D. A. Burns, A. M. Corey, C. S. Flynn, Y. Kitaygorodskaya, O. Massihzadeh, John M. Martinis, Gene C. Hilton
We report on the performance of dc SQUID (Superconducting Quantum Interference Device) series array amplifiers from dc to 500 MHz. The arrays consist of up to100 dc SQUIDs with varying degrees of intracoil damping, and the flux-focusing washer of each

Microfabricated Transition-Edge X-ray Detectors

March 1, 2001
Author(s)
Gene C. Hilton, John M. Martinis, Kent D. Irwin, Norman F. Bergren, David A. Wollman, Martin Huber, Sae Woo Nam
We are developing high performance x-ray detectors based on superconducting transition-edge sensors (TES) for application in materials analysis and astronomy. Using our recently developed fully lithographic TES fabrication process, we have made devices

Transition Edge Sensor Array Development

March 1, 2001
Author(s)
Steven Deiker, James A. Chervenak, Gene C. Hilton, Kent D. Irwin, John M. Martinis, Sae Woo Nam, David A. Wollman
NIST is fabricating multi-pixel arrays of our transition edge sensor (TES) microcalorimeter detectors for use in microanalysis and x-ray astrophysics. We have developed room temperature digital feedback electronics and a successful SQUID multiplexing