Energy Dependent Sensitivity of Microchannel Plate Detectors

Understanding of microchannel plate (MCP) detectors with x-ray energy is important for applications in high energy density research such as broadband imaging and x-ray spectroscopy. The relative sensitivity with photon energy for Cu∕Au coated MCPs in the range of 250eV<hν<5000eV has been measured at the National Synchrotron Light Source. A model of this response that includes contributions from secondary photoelectron yield and interactions with multiple channels is presented. This model is shown to agree with the measured MCP response to <20% over the majority of the spectral range using cross sections determined from an independent analysis of the MCP glass composition.

[1]  Paul A. Jaanimagi,et al.  High‐speed gated x‐ray imaging for ICF target experiments (invited) , 1992 .

[2]  G. Rochau,et al.  Time- and space-resolved elliptical crystal spectrometers for high energy density physics research , 2004 .

[3]  P. Bell,et al.  Characterization of Nova plasmas using an x‐ray spectrometer with temporal and spatial resolution , 1995 .

[4]  J. Wiza.  Microchannel plate detectors , 1979 .

[5]  B. L. Henke,et al.  The characterization of x‐ray photocathodes in the 0.1–10‐keV photon energy region , 1981 .

[6]  G. Fraser,et al.  The soft X-ray detection efficiency of coated microchannel plates , 1984 .

[7]  James F. Pearson,et al.  UV AND XUV QUANTUM DETECTION EFFICIENCIES OF CSI-COATED MICROCHANNEL PLATES , 1987 .

[8]  K. Tanaka,et al.  X-ray detection characteristics of gold photocathodes and microchannel plates using synchrotron radiation (10 eV–82.5 keV) , 1992 .

[9]  T. N. Archuleta,et al.  The large format x-ray imager , 2001 .

[10]  Elvis,et al.  A Chandra High-Resolution X-ray Image of Centaurus A , 1999, The Astrophysical journal.

[11]  Mitsuhiro Katayama,et al.  Multiframe x‐ray imaging system for temporally and spatially resolved measurements of imploding inertial confinement fusion targets , 1991 .

[12]  J. Kilkenny.  High speed proximity focused X-ray cameras , 1991 .

[13]  George W. Fraser,et al.  Synchrotron calibration of alkali halide coated microchannel plate detectors in the 50- to 350- and 2000- to 6000-eV bands , 1995, Optics & Photonics.

[14]  O. Landen,et al.  Angular sensitivity of gated microchannel plate framing cameras , 2000 .

[15]  J. D. Kilkenny,et al.  A new multichannel soft x‐ray framing camera for fusion experiments , 1992 .

[16]  G. Fraser,et al.  IMAGING MICROCHANNEL PLATE DETECTORS FOR X-RAY AND XUV ASTRONOMY , 1988 .

[17]  John P. Stott,et al.  First operation of an extended range grasshopper monochromator on the Aladdin storage ring , 1986 .

[18]  Derzon,et al.  Axial diagnostic package for Z , 1998 .

[19]  Michael Krumrey,et al.  Self‐calibration of the same silicon photodiode in the visible and soft x‐ray ranges , 1995 .

[20]  E. Eberhardt,et al.  Gain model for microchannel plates. , 1979, Applied optics.

[21]  G. W. Fraser,et al.  Enhanced soft X-ray detection efficiencies for imaging microchannel plate detectors , 1982, Nature.

[22]  Jerel A. Smith,et al.  0.1–10‐keV x‐ray‐induced electron emissions from solids—Models and secondary electron measurements , 1977 .

[23]  J. Culhane.  Position sensitive detectors in X-ray astronomy , 1991 .