Micropattern gas detector technologies and applications the work of the RD51 collaboration

Abstract

on behalf of the collaboration.Abstract-The RD51 collaboration was founded in April 2008 to coordinate and facilitate efforts for development of micropattern gaseous detectors (mpgds). The 75 institutes from 25 countries bundle their effort, experience and resources to develop these emerging micropattern technologies.Mpgds are already employed in several nuclear and high-energy physics experiments, medical imaging instruments and photodetection applications; many more applications are foreseen. They outperform traditional wire chambers in terms of rate capability, time and position resolution, granularity, stability and radiation hardness. RD51 supports efforts to make mpgds also suitable for large areas, increase cost-efficiency, develop portable detectors and improve ease-of-use.The collaboration is organized in working groups which develop detectors with new geometries, study and simulate their properties, and design optimized electronics. Among the common supported projects are creation of test infrastructure such as beam test and irradiation facilities, and the production workshop.

Development of the scalable readout system for micro-pattern gas detectors and other applications

“…The presence of the discharge protection as close as possible to the detector readout electrodes allows a better control and containment of the discharge, mitigating also against the spreading of the destructive discharge effects to the rest of the system. 1 The design of the hybrid tries to minimize the electrical interface between the hybrid and the rest of the DAQ system. This reduces the complexity of the overall system, leading to a higher integration density and also allowing the use of longer cables between the hybrid and the back-end system.…”

“…Established in 2008, the RD51 Collaboration [1] brings together more than 80 institutions worldwide in a collective effort to sustain the development of the Micro-Pattern Gas Detector (MPGD) technologies and increase their impact in the scientific research. Parallel to the development of new detectors, the community recognized the need for new developments in the field of associated readout electronics.…”

Development and test of a versatile DAQ system based on the ATCA standard

“…In this case the hybrids are attached directly to the ATCA-SRS crate for laboratory or beam test conditions where the back-end electronics are not subject of intense magnetic field or radiation environment. 1 The APV25 chip was developed initially as a front-end amplifier for the CMS silicon strip tracker and it is extensively used by the MAMMA collaboration for testing several Micromegas prototypes. It is a 128 channel charge sensitive amplifier chip with an analog pipeline buffer that has a depth of 192 cells for each input channel.…”

“…The Scalable Readout System (SRS) is a collective effort within the RD51 [1] collaboration started in 2009 initially for the R&D of the MPGD technologies and the associated readout electronics. It is a general purpose multichannel readout solution for a wide range of detector types and complexities in different experimental environments [2].…”

Development of the GEM-TPC X-ray Polarimeter with the Scalable Readout System

“…This paper deals with development of an engineering model of the micro-pattern TPC polarimeter combined with the Scalable Readout System (SRS) [8] produced by the RD51 Collaboration [9]. The polarimeter with SRS has been developed for ground tests to improve polarimetry sensitivity by quickly and flexibly changing detector parameters such as gas pressure and electric field strengths.…”