Unaxis Trading Ag

Martin Buschbeck

Johann Scholler

A chamber for chemical vapor deposition has an inner quartz tube encompassed by a shorter outer quartz tube in which each end of the inner quartz tube is encompassed by a first flange. The first flange has a groove encircling in the longitudinal direction of the inner quartz tube, in which in each instance a front of the inner quartz tube is positioned. Between the first flange and the outside of the inner quartz tube, a seal is disposed. On the first flange in the direction toward the tube center, a second flange is disposed which has an encircling rim for fixing the front side of the shorter outer quartz tube and which is in contact on the outside of the inner quartz tube as well as on the outside of the shorter outer quartz tube. Between the second flange and the outside of the shorter outer quartz tube, a seal is disposed. The second flange minimally includes a closable connection line which is connected to the volume between the shorter outer quartz tube and the inner quartz tube, and in which each first flange and each second flange on the inside comprises in each instance one cooling channel with minimally one inlet and one outlet for a cooling medium.

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Sevelen, Switzerland

Martin Buschbeck