Abstract for TIPP2014
							Version 1.0
							Jan 28, 2014


The Frugal Tile: A 20-cm-square MCP-PMT Module Comprising 8 Glass Parts

Andrey Elagin, Henry J. Frisch, Eric Oberla, Richard Northrop, Matthew Wetstein 
       University of Chicago

Bernhard Adams, Joseph Gregar, Jeffrey Elam, Anil Mane, Robert G. Wagner
       Argonne National Laboratory

Michael Minot, Aileen O'Mahony
	Incom, Inc.

Abstract
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We present the design for the `Frugal Tile', an all-glass MCP-PMT with
an active area of 400 square centimeters.  The LAPPD glass tile module
was designed to be simple, with: a) a hermetic package made of top and
bottom plates and a rectangular sidewall, each made of water-jet-cut plate
glass; b) an internal stack consisting of 2 glass capillary plates
functionalized with Atomic Layer Deposition and 3 glass grid spacers
made from waterjet-cut plate glass; and a getter assembly that drops
into place. Features of the design are: no pins penetrating the
envelope; c) an internal HV divider implemented by resistive coatings
on the MCP's and spacers; d) RF-stripline anodes silkscreened on the
bottom plate with an analog bandwidth above 1.5 GHz for good
spatial and temporal resolution; e) mechanical rigidity provided by
atmospheric pressure; and f) modular design for covering large areas.

The tile is one component of a modular system in which an array of
four tiles sits on a 1800-square-cm `Tray' section that contains the
ground plane of the RF strip-lines and supports the waveform sampling
and data-acquisition electronics that reads out the strips.