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(8”x8”) MCPs Resistance Measurements Oct 04, 2011

(8”x8”) MCPs Resistance Measurements Oct 04, 2011. Anil Mane, Jeffrey Elam. MCP resistance comparison in air vs. vacuum (Only NiCr electrode). No ALD coating only MCP data. Table 1: 33mm(20micron). Table 2: Back calculation for 8”x8”(20micron). 2.5x.

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(8”x8”) MCPs Resistance Measurements Oct 04, 2011

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

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

  3. MCP resistance comparison in air vs. vacuum (Only NiCr electrode) No ALD coating only MCP data Actual measurements on 8”x8” MCPs (20 vs. 40 micron) Table 4: 8”x8”(20 micron) Table 5: 8”x8”(40 micron) (R40micron = 2.5R20micron) [All other parameters are same]  • Data are in-line

  4. No ALD coating only MCP data MCP resistance comparison in air vs. vacuum (Only NiCr electrode) Table 5: 8”x8”(40 micron) All the vacuum resistance data are in-line. R4033 =46.8* (R40)8x8 = 4.68M  R2033= R4033 /2.5 = 1.85M Table 5: 33mm (20 micron) Question: What makes Incom glass conducting @ 200C? (OR) Any glass will show conducting behavior @ 200C ?

  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) : • Small Temperature range • Very sensitive to temperature • T for 33mm 20micron MCP = -0.033 • T for 8”x8”mm 40micron MCP = -0.056

  7. Summary • 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 ?

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