F4294-09

PRELIMINARY DATA MAY 1998 MCP ASSEMBLY WITH CENTER HOLE FOR REFLECTRON MS F4294-09 Ideally suited for reflectron mass spectrometer The F4294-09 is an MCP assembly developed for reflectron mass spectrometers. In spite of having a center hole for beam line, the F4294-09 eliminates ringing phenomena which have been a problem with conventional MCP assemblies with a center hole. The F4294-09 thus makes high-speed ion detection possible. This allows a significant size reduction in the TOF mass spectrometer and a dramatic improvement in mass resolution. TMCPF0090 FEATURES Center hole for beam line High-speed response Good output waveform with negligible ringing APPLICATION Reflectron mass spectrometer SPECIFICATIONS GENERAL Parameter Assembly Outer Diameter Effective Diameter Maximum Height MCP Channel Diameter Number of MCP Stages Center Hole Diameter Center Dead Space Diameter Value 69.0 27.0 26.4 12 2 6.0 12.0 Unit mm mm mm µm mm mm Figure 1: Typical Output Waveform TMCPB0077EA MAXIMUM RATINGS (Absolute values) MCP Supply Voltage (In-Out) MCP-Out to Anode Voltage Electric Potential at Each Terminal Operating Vacuum Condition Baking Temperature Baking Time Baking Vacuum Condition * Baking cannot be performed. 2 0.5 MCP-In: -2.5 MCP-Out: -0.5 Anode: GND -4 -6 6.7 × 10 (5 × 10 ) Max. -* -* -* -4 -6 kV kV kV Pa (Torr) °C h Pa (Torr) OUTPUT VOLTAGE (5mV/div) RISE TIME: 328ps FALL TIME: 633ps FWHM : 592ps SUPPLY VOLTAGE (MCP): 1700V CHARACTERISTICS (at 1.3 × 10 Pa (1× 10 ...