LAPPD Figures for Papers and Talks

Moneyplot demountable

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Differential time resolution as a function of
Noise/Signal, plotted for data collected using the Demountable detector in 2014. The intercept of the fit intersects with 1.1 psec.

Asym

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The asymmetry in charge measured on the two neighboring striplines, plotted as a function of approximate displacement from the nominal strip. An asymmetry of 1 means that all of the charge is on the nominal stripline and -1 means all of the charge on the neighbor.

Modal peak

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The modal signal peak, as a function of displacement from the nominal strip. Black triangles correspond to the peak signal on the nominal stripline and blue circles, the neighboring strip. The spike in signal size at displacement $\sim$3.5 mm is not understood, but the fractional signal on each stripline is consistent with the location of the beam.

Tres trans

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The fitted time resolution as a function of approximate displacement, measured on the nominal stripline (black triangles) and the neighboring stripline (blue circles). The dashed line and shaded band indicate the mean and RMS of the measured resolutions over the scan.

Richn mocktile dsc 4717

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A `mock' tile, consisting of all 8 real components, including 2 Micro-channel Plate substrates functionalized with ALD,
three spacers, tile base and window, plus a getter `necklace'. However, the window is not hermetically sealed to the tile base, and there is no photocathode, so it's useful only for mechanical dimensioning, demonstrating robustness, and creating a yearning to get a working one.

Img 20130831 202422

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First successful hot seal. 8x8" sidewall with 2.75 mm window during leak check test. August 31, 2013.

Img 20130831 202413

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First successful hot seal. 8x8" sidewall with 2.75 mm window during leak check test. August 31, 2013.

Img 7328

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Spacer's station. Full stack view.

Img 7327

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Spacer's station. Opened.

Img 7323

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Spacers station assembled and in operation.