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Overview of Multiplier Mfg process

DeTech's 6-step multiplier manufacturing process

The manufacturing process of electron multipiers utilizes a number of glass forming and wet chemistry techniques. All multipliers are manufactured from a specialty lead silicate glass formula developed by Detector Technology, Inc. The information contained on this page is to provide you with an overview to DeTech's patented process of electron multiplier manufacturing. If you have specific questions about how DeTech's process can provide you with unmatched quality multipliers, please contact one of DeTech's representatives at 413.284.9975.

step 1- glass extrusion 1. Extrusion/Draw/Cutting - The process starts with a glass billet that is extruded and drawn to final diameter. A work piece is then cut from the drawn material that is about 4-6 inches long. DeTech has various glass diameters that range from 2-8 mm.
step 2- glass flaring 2. Flaring - The glass is then flared over a hot carbon tool that puts a conical shape on the end of the multiplier. This shape has extreme flexibility, since the carbon tool can be made to any angle specified
step 3-glass bending 3. Bending - The glass is then bent in a furnace over a mandrel. The curvature of the channel is important since it eliminates ion-feedback in the channel 3
step 4- sizing 4. Sizing - Next, the unit is ground to final size on a diamond wheel. The multipliers are then processed in a series of chemicals that will clean and enhance the surface for further processing.
step 5- glass reduction 5. Reduction - The unit is then reduced in a hydrogen atmosphere under specific time and temperature conditions. This is the critical process that activates the surface of the glass through and ion exchange process that creates the silica enriched layer on the surface.
step 6-finishing 6. SandBlast/Evaporation/Assembly/Testing - A section of the unit is then sandblasted away to create a single conduction path on the multiplier to create the proper voltage gradient. A mild steel is evaporated on the multiplier to create a short on the outside for electrical connections. The unit is now ready to be assembled. Depending on the system and the ion optics, each unit is mounted precisely in a frame that consists of stainless steel and ceramic parts. After the assembly is complete, the unit is then put under vacuum and tested for both gain and noise. DeTech tests 100% of its multipliers and certifies the performance and quality.

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