1. (8”x8”) MCPs Resistance Measurements Oct 04, 2011 Anil Mane, Jeffrey Elam

2. MCP resistance comparison in air vs. vacuum (Only NiCr electrode) No ALD coating only MCP data MCPResistance in vacuum 8”x8”(20micron) 4.15 G  Table 2: Back calculation for 8”x8”(20micron) MCPResistance in vacuum 8”x8”(40micron) 10 G  Table 3: Back calculation for 8”x8”(40micron) 2.5x Note: 1x (8”x8” MCP) = 46.8 x(33mm MCP) MCPResistance in vacuum MCP77 194G  Table 1: 33mm(20micron)

3. MCP resistance comparison in air vs. vacuum (Only NiCr electrode) No ALD coating only MCP data 8x8 MCP IDResistance in vacuum 12258-372 1.5G  Table 4: 8”x8”(20 micron) Actual measurements on 8”x8” MCPs (20 vs. 40 micron) 8x8 MCP IDResistance in vacuum 11874-218 4.4G  Table 5: 8”x8”(40 micron) (R 40micron = 2.5R 20micron ) [All other parameters are same]  Data are in-line

4. MCP resistance comparison in air vs. vacuum (Only NiCr electrode) No ALD coating only MCP data 8x8 MCP IDResistance in vacuum (25C) Resistance in vacuum (200C) 11874-218 4.4G  100K  Table 5: 8”x8”(40 micron) MCP IDResistance in vacuum (25C) Resistance in vacuum (200C) 11863-086 194G  2.4M  Table 5: 33mm (20 micron) R40 33 =46.8* (R40) 8x8 = 4.68M   R20 33 = R40 33 /2.5 = 1.85M  All the vacuum resistance data are in-line. Question: What makes Incom glass conducting @ 200C? (OR) Any glass will show conducting behavior @ 200C ?

5. 5 Thermal characteristic of 8”x8”MCP (40 micron) in vacuum: MCP process with chem-2 +ALO SEE Y-axis log scale 8”x8” MCP resistance is very sensitive to the temperature Question: @ 200C which conduction dominate? a) Resistive coating= 25M  -100K  b) MCP glass itself= 4.4G  -100K 

6. Thermal characteristic of 8”x8”MCP (40 micron) : 6  T for 33mm 20micron MCP = -0.033  T for 8”x8”mm 40micron MCP = -0.056 Small Temperature range Very sensitive to temperature

7. Summary 7 8”x8” MCPs are very sensitive to atmosphere, ALD conditions and the temperature compare to 33mm MCPs 25M  40micron 8”x8” MCP is available for testing. (one of the corner is broken during transfer but still good to go!!) Need more 8”x8” MCPs with NiCr electrodes Next plan: ALD on 2x 20 micron 8”x8” MCPs (received form UCB) MCP Quality ?