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Your search keyword '"Chapin, E."' showing total 15 results
Start Over Author "Chapin, E." Publication Type Conference Materials
15 results on '"Chapin, E."'

2. The Balloon-borne Large-Aperture Submillimeter Telescope for polarization: BLAST-pol

Author

Marsden, G., primary, Ade, P. A. R., additional, Benton, S., additional, Bock, J. J., additional, Chapin, E. L., additional, Chung, J., additional, Devlin, M. J., additional, Dicker, S., additional, Fissel, L., additional, Griffin, M., additional, Gundersen, J. O., additional, Halpern, M., additional, Hargrave, P. C., additional, Hughes, D. H., additional, Klein, J., additional, Korotkov, A., additional, MacTavish, C. J., additional, Martin, P. G., additional, Martin, T. G., additional, Matthews, T. G., additional, Mauskopf, P., additional, Moncelsi, L., additional, Netterfield, C. B., additional, Novak, G., additional, Pascale, E., additional, Olmi, L., additional, Patanchon, G., additional, Rex, M., additional, Savini, G., additional, Scott, D., additional, Semisch, C., additional, Thomas, N., additional, Truch, M. D. P., additional, Tucker, C., additional, Tucker, G. S., additional, Viero, M. P., additional, Ward-Thompson, D., additional, and Wiebe, D. V., additional

Published
2008
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5. Proposed experiment to detect air showers with the Jicamarca radar system.

Author

Vinogradova, T., Chapin, E., Gorham, P., and Saltzberg, D.

Subjects
COSMIC ray showers, PARTICLES (Nuclear physics), RADAR, IONIZATION (Atomic physics)
Abstract

When an extremely high energy particle interacts in the atmosphere, the collision induces a multiplicative cascade of charged particles, which grows exponentially until the energy per secondary degrades enough to dissipate in ionization of the surrounding air. During this process the compact cloud of energetic secondary particles travels 10-20 km through the atmosphere, leaving a column of ionization behind it. This ionized column quickly recombines, but for a period of order 0.1 ms it is highly reflective at frequencies below 100 MHz. This ionization trail, which is comparable in ionization density to that of a micro-meteor, should be clearly detectable using standard radar methods. We propose radar measurements using the facilities operated by Cornell University and the Instituto Geofisico del Peru (IGP) at the Jicamarca Radio Observatory near Lima, Peru. This facility's primary instrument is 49.92 MHz incoherent scatter radar, transmitting up to 1.5 MW of pulse power. [ABSTRACT FROM AUTHOR]

Published
2001

7. Simulating the performance of large-format sub-mm focal-plane arrays.

Author

Chapin, E., Hughes, D. H., Kelly, B. D., and Holland, W. S.

Subjects
STARBURSTS, BOLOMETERS
Abstract

A robust measurement of the clustering amplitude of the sub-mm population of starburst galaxies requires large-area surveys (>1 deg2). The largest-format arrays subtend only 10 arcmin2 on the sky and hence scan-mapping is a necessary observing mode. Providing realistic representations of the extragalactic sky and atmosphere, as the input to a detailed simulator of the telescope and instrument performance, allows important decisions to made about the design of large-area fully-sampled surveys and observing strategies. In this paper we present preliminary simulations that include detector noise, time-constants and array geometry, telescope pointing errors, scan speeds and scanning angles, sky noise and sky rotation. © 2002 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Published
2002

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