Gamma detector F2220 series

ionvacuummultichannel

F2221 MCP Effective area : 14.5 mm dia., Circular MCP, Demountable F2222 MCP Effective area : 20 mm dia., Circular MCP, Demountable F2223 MCP Effective area : 27 mm dia., Circular MCP, Demountable F2224 MCP Effective area : 32 mm dia., Circular MCP, Demountable F2225 MCP Effective area : 42 mm dia., Circular MCP, Demountable F2226 MCP Effective area : 77 mm dia., Circular MCP, Demountable MicroChannel plate (MCP) is a two-dimensional sensor that detects electrons, ions, VUV rays, X-rays and gamma rays in a vacuum, and amplifies the detected signals. These MCPs are widely used in many types of analytical equipment such as for "mass spectroscopy", "semiconductor inspection" and "surface analysis". The MCP assemblies are available with two different readout devices to meet application needs. The devices are of: (1) single anode (electrical signal output), and (2) phosphor screen (visible light output). Select the ideal output device for your application. From one to three stage MCPs can be selected for the assembly to obtain necessary gain, allowing uses in the analog mode (the output signal is measured as a continuous electrical current) or the counting mode (the low level signal can be measured by a binary processing). As shown in the figure on the lower right, a potential gradient is established along the channel when the voltage Vd is applied between the input and output sides of the MCP. Multiple secondary électrons are emitted when an électron enters a channel from the input side and hits its inner wall. These secondary électrons are accelerated by the potential gradient to draw parabolic trajectories that are determined by their initial veloci-ties.