Search

Your search keyword '"Vale, L. R."' showing total 8 results
Start Over Author "Vale, L. R." Publication Type Conference Materials
8 results on '"Vale, L. R."'

1. Time- and code-division SQUID multiplexing options for ATHENA X-IFU (Conference Presentation)

Author

Ullom, Joel N., primary, Adams, Joseph S., additional, Alpert, Bradley K., additional, Bandler, Simon R., additional, Bennett, Douglas A., additional, Chaudhuri, Saptarshi, additional, Chervenak, James A., additional, Denison, E. V., additional, Dawson, C., additional, Doriese, W. B., additional, Durkin, M., additional, Fowler, J. W., additional, Gard, Johnathon, additional, Hilton, G. C., additional, Irwin, Kent D., additional, Joe, Y. I., additional, Kilbourne, Caroline A., additional, Mates, John A. B., additional, Morgan, Kelsey M., additional, O'Neil, G. C., additional, Reintsema, C. D., additional, Schmidt, D. R., additional, Smith, Stephen J., additional, Swetz, Daniel S., additional, Titus, C. J., additional, Vale, L. R., additional, and Young, B. A., additional

Published
2018
Full Text
View/download PDF

2. Characterization of Thermal Cross-talk in a γ-ray Microcalorimeter Array

Author

Jethava, N., primary, Ullom, J. N., additional, Bennett, D. A., additional, Irwin, K. D., additional, Horansky, R. D., additional, Beall, J. A., additional, Hilton, G. C., additional, Vale, L. R., additional, Hoover, A., additional, Bacrania, M. K., additional, Rabin, M. W., additional, Young, Betty, additional, Cabrera, Blas, additional, and Miller, Aaron, additional

Published
2009
Full Text
View/download PDF

4. Issues in energy calibration, nonlinearity, and signal processing for gamma-ray microcalorimeter detectors

Author

Hoteling, N., primary, Bacrania, M. K., additional, Hoover, A. S., additional, Rabin, M. W., additional, Croce, M., additional, Karpius, P. J., additional, Ullom, J. N., additional, Bennett, D. A., additional, Horansky, R. D., additional, Vale, L. R., additional, Doriese, W. B., additional, Young, Betty, additional, Cabrera, Blas, additional, and Miller, Aaron, additional

Published
2009
Full Text
View/download PDF

5. Simulating the response of ultra-high energy resolution x- and gamma-ray microcalorimeter detectors

Author

Hoover, A. S., primary, Bacrania, M. K., additional, Dry, D., additional, Hastings, E. P., additional, Lamont, S. P., additional, Rim, J. H., additional, Rabin, M. W., additional, Rudy, C. R., additional, Vo, D. T., additional, Beall, J. A., additional, Doriese, W. B., additional, Hilton, G. C., additional, Horansky, R. D., additional, Irwin, K. D., additional, Ullom, J. N., additional, Vale, L. R., additional, Kilbourne, C. A., additional, King, J., additional, and Porter, F. S., additional

Published
2007
Full Text
View/download PDF

6. Characterization of Thermal Cross-talk in a γ-ray Microcalorimeter Array.

Author

Jethava, N., Ullom, J. N., Bennett, D. A., Irwin, K. D., Horansky, R. D., Beall, J. A., Hilton, G. C., Vale, L. R., Hoover, A., Bacrania, M. K., and Rabin, M. W.

Subjects
CALORIMETERS, SPECTRUM analysis, GAMMA rays, IRRADIATION, HIGH resolution spectroscopy
Abstract

We present experimental data describing cross-talk within an array of gamma-ray microcalorimeters during gamma-ray irradiation. The microcalorimeters consist of Mo/Cu transition-edge sensors (TESs) with attached Sn absorbers. We observe both thermal and electrical cross-talk with peak cross-talk amplitudes as large as 0.4%. We have developed an analytical model for thermal cross-talk and make a preliminary comparison to data. Cross-talk must be understood and minimized for high resolution spectroscopy at high input count rates. [ABSTRACT FROM AUTHOR]

Published
2009
Full Text
View/download PDF

7. Issues in energy calibration, nonlinearity, and signal processing for gamma-ray microcalorimeter detectors.

Author

Hoteling, N., Bacrania, M. K., Hoover, A. S., Rabin, M. W., Croce, M., Karpius, P. J., Ullom, J. N., Bennett, D. A., Horansky, R. D., Vale, L. R., and Doriese, W. B.

Subjects
CALIBRATION, GAMMA rays, DETECTORS, CALORIMETERS, ACTINIUM compounds
Abstract

Issues regarding the energy calibration of high dynamic range microcalorimeter detector arrays are presented with respect to new results from a minor actinide-mixed oxide radioactive source. The need to move to larger arrays of such detectors necessitates the implementation of automated analysis procedures, which turn out to be nontrivial due to complex calibration shapes and pixel-to-pixel variability. Some possible avenues for improvement, including a more physics-based calibration procedure, are suggested. [ABSTRACT FROM AUTHOR]

Published
2009
Full Text
View/download PDF

8. Time-division SQUID multiplexers.

Author

Irwin, K. D., Vale, L. R., Bergren, N. E., Deiker, S., Grossman, E. N., Hilton, G. C., Nam, S. W., Reintsema, C. D., Rudman, D. A., and Huber, M. E.

Subjects
SUPERCONDUCTING quantum interference devices, MULTIPLEXING equipment, BOLOMETERS, CALORIMETERS
Abstract

SQUID multiplexers make it possible to build arrays of thousands of low-temperature bolometers and microcalorimeters based on superconducting transition-edge sensors with a manageable number of readout channels. We discuss the technical tradeoffs between proposed time-division multiplexer and frequency-division multiplexer schemes and motivate our choice of time division. Our first-generation SQUID multiplexer is now in use in an astronomical instrument. We describe our second-generation SQUID multiplexer, which is based on a new architecture that significantly reduces the dissipation of power at the first stage, allowing thousands of SQUIDs to be operated at the base temperature of a cryostat. [ABSTRACT FROM AUTHOR]

Published
2002

Catalog

Books, media, physical & digital resources
See catalog results