Space Sciences Laboratory, University of California, Berkeley

Arradiance ALD/Incom MCP Test

• Incom substrate

• 40µm pores, 8 deg bias, 40:1 L/D• Sent to Arradiance for resistive and emissive layer application + electrode• Resistance approx 750 MΩ in vacuum• Arradiance tests show 50,000 gain @ 1000v• Tested as a single MCP + Phosphor• High resolution images and scrubbing progress.

Space Sciences Laboratory, University of California, Berkeley

Arradiance ALD/Incom MCP Test

550v

1000v background, no obvious

hotspots other than phosphor defects

Bright scratch on phosphor

UV light

Space Sciences Laboratory, University of California, Berkeley

SSL-UCB, ALD/Incom MCP Test

• Multifiber pattern fades as the MCP gain is increased

• Gain is quite uniform

Space Sciences Laboratory, University of California, Berkeley

SSL-UCB, ALD/Incom MCP Test

• We can see the 40µm pores

• We can see the Hex boundary distortions are uneven

• 800v MCP

• 2900v screen

Space Sciences Laboratory, University of California, Berkeley

ALD/Borosilicate MCP TestWe can see the Hex boundary distortions cause gain nonuniformity

550v MCP 1000v MCP

Space Sciences Laboratory, University of California, Berkeley

Arradiance conduction and emission films10 m pore NO LEAD glass substrate, 40:1 L/D, Bias = 880V,

Iout~0.4 pA/pore, gain under electron bombardment

Tremsin - LAPD workshop

0

0.2

0.4

0.6

0.8

1

1.2

0 0.01 0.02 0.03 0.04 0.05

Dose (C/cm2)

Gain

Commercial MCPArradiance emissive film onlyArradiance Conductive & Emissive films

Arradiance, Inc.

Space Sciences Laboratory, University of California, Berkeley

UV Scrub 25mm 40µm 40:1 ALD MCPStarts at Bias = 700V, gain x1000, 0.6µA, change to 850v, 0.8µA at 0.03C/cm2

Note: no pre-vacuum bake

Quite stable after 0.03 C/cm2,

vs 0.2 C/cm2 for normal MCP