International Journal of Physics, 2014, Vol. 2, No. 4, 105-108 Available online at http://pubs.sciepub.com/ijp/2/4/2 © Science and Education Publishing DOI:10.12691/ijp-2-4-2 Analysis of the Performances of Sealed Timing Resistive Plate Chambers (tRPCs) Khokon Hossen * Max-Planck Institute for Nuclear Physics, Heidelberg, Germany *Corresponding author: hossen@mpi-hd.mpg.de Received June 17, 2014; Revised July 02, 2014; Accepted July 29, 2014 Abstract Resistive Plate Chambers (RPCs) were introduced by R. Santonico and R. Cardarelli in 1981, are gas ionization chambers made with resistive electrodes separated by precision spacers. Typical gas gap ranges from a few hundred micrometers to several millimeters wide. Timing Resistive Plate Chambers (tRPCs) were introduced in 2000 by P.Fonte, A. Smirnitsky and M.C.S Williams and since then it has reached Time Resolutions better than 50 ps (σ) with efficiencies above 99% for Minimum Ionizing Particle (MIP). In this research paper, we described the main features of gas detectors and the different types of RPCs and their properties. We described the main results that we have got during the operating the sealed tRPCs built in the laboratory. Keywords: RPCs, tRPCs, gas ionization chambers, efficiency, performances Cite This Article: Khokon Hossen, “Analysis of the Performances of Sealed Timing Resistive Plate Chambers (tRPCs).” International Journal of Physics, vol. 2, no. 4 (2014): 105-108. doi: 10.12691/ijp-2-4-2. 1. Introduction Resistive Plate Chambers (RPCs) and Timing Resistive Plate Chambers (tRPCs) belongs to the family of the gas ionization detector. The first RPC was introduced by R. Santonico and R. Cardarelli in 1981 and tRPCs were introduced by P.Fonte, A. Smirnitsky and M.C.S Williams in 2000 [1]. Since then, Resistive Plate Chambers (RPCs) have become very popular detectors to cover very big surface because they offer a very high time resolution at a very good performance and also price ratio compared with other techniques [2]. Nowadays, many experiments in Nuclear Physics, High Energy Physics, Medical Physics, Particle Physics and Astrophysics are using RPCs [3]. Such types of detectors could also be very helpful for small experimental setups as an alternative to other methods. But they have the disadvantage of needing very bulky and uncomfortable gas systems [4]. For this reason, in this research, we have developed a cheap and easy to build small and portable sealed tRPCs. We have also analyzed some of their performances and behaviors. 2. Setup and the Acquisition System We have tested whether our sealed tRPCs work properly or not before took data. Figure 1 shows the block diagram of the acquisition setup that we used to test our sealed tRPCs and getting data. We took data using 22 Na source to produce the signal and to analyze the performances of our detector. We used a fast scintillator, readout by two photomultipliers, to make coincidences and rejecting the electrical noise. Figure 1. Block Diagram of Acquisition setup