Radiation-tolerant, red-sensitive CCDs for dark energy investigations

被引:7
|
作者
Roe, N. A. [1 ]
Bebek, C. J. [1 ]
Dawson, K. S. [1 ]
Emes, J. H. [1 ]
Fabricius, M. H. [1 ]
Fairfield, J. A. [1 ]
Groom, D. E. [1 ]
Holland, S. E. [1 ]
Karcher, A. [1 ]
Kolbe, W. F. [1 ]
Palaio, N. P. [1 ]
Wang, G. [1 ]
机构
[1] Lawrence Berkeley Lab, Berkeley, CA 94720 USA
关键词
charge-coupled devices; P-channel; fully depleted; diffusion; radiation tolerance;
D O I
10.1016/j.nima.2006.10.381
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
We describe the development of thick (200-300 mu m), fully depleted p-channel, charge-coupled devices (CCDs). The advantages of these CCDs relative to conventional thin, n-channel CCDs include: high quantum efficiency over a wide range of wavelengths, extending into the near-infrared; negligible fringing at long (similar to 900-1000nm) wavelengths; improved radiation tolerance; and a small point-spread function controlled through the application of the bias voltage. These visible-to-near-infrared light detectors are good candidates for the next generation of large focal-plane mosaics under development for dark energy measurements. The Dark Energy Survey has selected these CCDs for the focal plane of a new camera being designed for the Blanco 4m telescope at CTIO in Chile. They also meet all the requirements for the visible-light detectors for the SuperNova/Acceleration Probe, a satellite-based experiment designed to make precision measurements of dark energy. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:526 / 527
页数:2
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