A pixel 21-channel drift chamber

The design of the pixel chamber is described, and the results of investigation of its characteristics are presented. The spatial resolution averaged over a cell of the pixel chamber is 0.9 mm at a beam intensity of up to 106 s−1 and becomes equal to 1.1 mm at an intensity of 5 × 106 s−1. The chamber efficiency is ∼90% at a beam intensity of 10−1 and decreases to 75% at 5 × 106 s−1.