Abstract
We have developed a high-resolution imaging detector with five microchannel plates (MCPs) in a set of V and Z stacks and a resistive anode encoder (RAE) for future space applications. In a position-sensitive system with a RAE, the spatial resolution depends on the signal-to-noise ratios at the anode terminals. Therefore, a high and stable electron gain of MCPs allows the position determination of each photo electron event with a high spatial resolution. We investigated the effect of the potentials applied to the detector on the pulse height distribution (PHD) and the spatial resolution by means of calculations and experiments. The calculations showed that the negative interstack potential reduced the size of the electron cloud at the Z-stack input by . The result suggests that, under such a condition, the Z-stack MCP is operated in the completely saturated mode and exhibits a narrow PHD. On the other hand, in the measurements, applying the negative interstack potential reduced the width of the PHD by . As a result, the spatial resolution of , corresponding to pixels, was achieved. The results enable us to optimize and apply the technique to future missions.
© 2010 Optical Society of America
Full Article | PDF ArticleMore Like This
A. Lyle Broadfoot and B. R. Sandel
Appl. Opt. 16(6) 1533-1538 (1977)
William E. McClintock, Charles A. Barth, Robert E. Steele, George M. Lawrence, and J. Gethyn Timothy
Appl. Opt. 21(17) 3071-3079 (1982)
Anton S. Tremsin, Oswald H. W. Siegmund, Mark A. Gummin, Patrick N. Jelinsky, and Josef M. Stock
Appl. Opt. 38(11) 2240-2248 (1999)