Introduction / Structure and Fabrication
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Structure and Fabrication

A supporting body of ceramic material
A specially formulated lead silicate glass inside the supporting body
A metalization of gold or silver deposited onto both ends of the CEM

The channel electron multipliers Series KBL consists of three components:

















Fig. 3 Channel electron multiplier type KBL10RS


The special ceramic material was chosen for its ability to maintain the lead glass under a compressive force thus preventing the appearance of fine cracks that may result from sudden fluctuations in temperature. The ceramic material is first processed and then sintered. Both halves of the rectangular models and both halves and the funnel of the circular models are fused together without the use of adhesives. The procedure is followed by the final processing of the ceramic body. The colored glaze is necessary as a base for the gold layer, that is used for the electrical contacts.

The lead glass is hydrogen-reduced thereby producing the active surface of the CEM and the secondary emissive characteristics critical to CEM performance. The glass coats the entire surface of the inner wall so that a continuous dynode is formed.

A silver layer is deposited onto both ends of the CEM for electrical contacting of the CEM input and output to the applied voltage. This layer is deposited with a thick-film process and cannot be interrupted inadvertently. In addition, the electrical contacts are applied on both sides of the CEM bodies.


Fig. 1 Supporting bodies
Fig. 2 Cross-sectional view of the surface structure of CEMs Series KBL



































Dr. Sjuts Optotechnik GmbH

Am Schlehdorn 1, 37077 Goettingen, Germany Tel. + 49 (0) 551 209 95 62, Fax. + 49 (0) 551 209 95 63