Designing and manufacturing the Triple RETGEM detector

The aim of this paper is to design, manufacture and test the first triple RETGEM detector. Using resistive electrode in RETGEM detectors made them more robust against the electrical discharge with respect to THGEM detectors. However, even these robust detectors are not protected against electrical discharge at gains higher than 105. Studying the role of dimensions of the triple RETGEMS detectors and also the effect of pressure and gas mixtures on the gain level of detectors, we will show, the triple RETGEM detectors can reach the gains up to 106 without worrying about electrical discharge. We also compare the result of all tests for single and triple RETGEM detectors.