MCPa: Usinag Microchannel Plate in TOF Measurement

TOF Measurement, specifically in the context of Time-of-Flight Mass Spectrometry (TOF-MS), is a key application area for certain types of Microchannel Plate (MCP) assemblies. 

• Definition and Purpose: TOF (Time-of-flight) measurement is described as measuring the difference between the arrival times of signals. This technique is applied in Mass Spectrometry, known as TOF-MS.
• MCPs in TOF Measurement: MCPs are used in assemblies for TOF measurement because they are sensors that detect particles and amplify signals. Their ability to precisely measure the arrival time of particles, which is crucial for TOF techniques, is highlighted by the need for a fast response time.
• Required Characteristics for TOF:
  • Fast Response Time: MCP assemblies designed for TOF measurement have specific characteristics, primarily a fast response time. The sources mention fast response times ranging from 450 ps to 1.5 ns (FWHM) for these assemblies. Various models are listed under the "Fast time response" category, with specified pulse widths (FWHM) like 900 ps, 450 ps, 1200 ps, 700 ps, 1500 ps, and 1300 ps.
  • Minimizing Time Jitter: For TOF-MS, the stability and durability of the MCP assembly are important because they help in minimizing the time jitter that affects the mass resolution. Robust MCPs, which are described as having durability and stability, are less likely to warp or crack and are very stable in shape, contributing to reduced time jitter.