Electrode module of the RISC spectrometer streamer chamber

The RISC spectrometer streamer chamber is one of the biggest among the acting in our days controlled track detectors of this type. Its feeling volume constitutes 3.5 m3. A bipolar scheme of its high-voltage power supply is another peculiarity of this chamber. This unit is the first streamer chamber with bipolar supply successfully operating on the accelerator. Studied is the operation of the six-meter module of grid electrodes which is the main part of the streamer chamber forming its feeling volume. The following problems are under consideration: choice of configuration and basic parameters of electrode module, estimation of high-voltage isolation strength, construction of the case and operation volumes of the chamber, calculation estimations and assembly technique of grid electrodes. The streamer regime in the given chamber was obtained during its first start in April, 1977. By now, some experiments with the RISC spectrometer streamer chamber have been carried out on the Serpuchov accelerator. The results of these experiments are under study