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All channels that appear as dead have pinholes, except channel #268 (shorted bond).

All channels that appear as dead have pinholes, except channel #268 (shorted bond). All channels that appear as dead have pinholes. Channels with pinholes have lower gain. Channel with pinhole: normal number of hits. Channel next to pinhole: high number of hits.

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All channels that appear as dead have pinholes, except channel #268 (shorted bond).

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  1. All channels that appear as dead have pinholes, except channel #268 (shorted bond).

  2. All channels that appear as dead have pinholes.

  3. Channels with pinholes have lower gain.

  4. Channel with pinhole: normal number of hits Channel next to pinhole: high number of hits

  5. Summary of test results on M5T50001 • Average gain: 6.2 mV/fC • Dead channels (bonding shorts): 1 channel, 0.1% of module • Average noise: 1.44 mV • Peak signal: 24 mV • Peak signal/ Gain = 24/6.2 = 3.9 fC (~1 MIP) • Peak S/N: 17 • Pinholes: 26 on sensors, 23 seen as having lower gain • On source test, channels with pinholes have expected number of hits, but the neighboring channel has higher number of hits than expected.

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