Author/Authors :
Roe، نويسنده , , N.A. and Bebek، نويسنده , , C.J. and Dawson، نويسنده , , K.S. and Emes، نويسنده , , J.H. and Fabricius، نويسنده , , M.H. and Fairfield، نويسنده , , J.A. and Groom، نويسنده , , D.E and Holland، نويسنده , , S.E. and Karcher، نويسنده , , A. and Kolbe، نويسنده , , W.F. and Palaio، نويسنده , , N.P. and Wang، نويسنده , , G.، نويسنده ,
Abstract :
We describe the development of thick (200–300 μm), 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 (∼900–1000 nm) 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 4 m 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.
Keywords :
Radiation tolerance , Charge-coupled devices , P-channel , Fully depleted , diffusion
