Tuesday, July 27, Testing and Characterization Plans

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1 Testing and Characterization Plans

2 Laser testing lab is a high-level characterization facility systems integration-level a little too complicated for simple failure analysis of single plates What can we do, in collaboration with the ALD group, to develop lower-level quality control? 2

3 Optical backlighting IV curve (low voltage) Failure Analysis HV test/thermal imaging Phosphor/UV imaging Full B-Flange Testing Complete 3

4 Failure Analysis Optical backlighting IV curve (low voltage) HV test/thermal imaging Phosphor/UV imaging tilt MCP along bias angle in microscope illuminate from beneath and photograph look for dirt/mechanical issues Equipment already available Full B-Flange Testing Complete 4

5 Failure Analysis Optical backlighting IV curve (low voltage) HV test/thermal imaging Phosphor/UV imaging measure resistance in vacuum study linearity of IV measure thermal coefficient of resistivity verify in B-flange already available and in use Full B-Flange Testing Complete 5

6 Failure Analysis Optical backlighting IV curve (low voltage) HV test/thermal imaging Phosphor/UV imaging Full B-Flange Same chamber used for IV curve Subject single MCPs to high voltage Use IR camera to see uniformity and extent of heating under high voltage how to ALD MCPs dissipate heat? indirect way of measuring resistive uniformity Testing Complete 6

7 LAPPD Collaboration: Large Area Picosecond Photodetectors Thermal Imaging 05/25/10 LAPPD Collaboration Meeting 7

8 Optical backlighting IV curve (low voltage) Failure Analysis HV test/thermal imaging Phosphor/UV imaging Full B-Flange Study the amplification of single plates Image uniformity Testing Complete 8

9 Optical backlighting Failure Analysis IV curve (low voltage) HV test/thermal imaging Phosphor/UV imaging Full B-Flange Systems testing Stripline anode Timing response/ amplification dependence on plate properties Dependence on voltage gaps Testing Complete 9

10 Oreo Testing Oreo cookies can be fit into the B-flange with two ceramic plates Can be ready by beginning of September. Working with Jeff/Qing/ Anil on readiness of samples and testing sechedule We have a few questions: who s drilling, when? what about dust? masking during electroding? 10

11 Laser Lab Schedule Water installation Pack Laser SOP/safety clearance Schedule riggers, repairs, and installation Riggers to Move Laser Curtain installation Oscillator installation Pump amplifier repair 11

12 Laser Lab Schedule Water installation (wrapping up this week) Pack Laser (starting this week) SOP/safety clearance (starting this week) Schedule riggers, repairs, and installation (starting this week) Riggers to Move Laser (next week) Curtain installation (this month) Oscillator installation (this month) Pump amplifier repair (this month) 12

13 Testing Schedule Small setback from sparking, mostly due to a bad vacuum seal (top voltages in the 5 kv ballpark) Laser lab slightly delayed. LED-based measurements this month 3 resistances on top and bottom ALD over and under electrode AAO plates 2 different pore sizes variation of gap voltages September timing measurements with laser Oreo cookies 13

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