Recent Progress with Microchannel-Plate PMTs


Lehmann, A., Böhm, M., Miehling, D., Pfaffinger, M., Stelter, S., Uhlig, F., ... & Thiele, M. (2018). Recent progress with microchannel-plate PMTs. Journal of Instrumentation, 13(10), C10001.


  • Cherenkov detectors
  • microchannel-plate photomultipliers
  • lifetime
  • atomic layer deposition (ALD)


The lifetime of ALD-coated MCP-PMTs has significantly increased, with the best performing model exceeding 20 C/cm2 integrated anode charge without signs of aging, making them suitable for high-intensity environments like the P̄ANDA experiment.


The article discusses the use of microchannel-plate photomultipliers (MCP-PMTs) in the P̄ANDA experiment at FAIR. The authors found that atomic layer deposition (ALD) coating increased MCP-PMT lifetimes considerably (by about 100 times compared to non-ALD). The lifetime of the best performing model, the two-layer ALD-coated PHOTONIS PMT, exceeded 20 C/cm2 integrated anode charge, while the P̄ANDA experiment only requires a lifetime exceeding 5 C/cm2. The authors conclude that recent improvements in MCP-PMTs satisfy the requirements of the P̄ANDA experiment's DIRC detectors.


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