The likelihood to build a SiPM-readout muon detector (SiRO), utilizing plastic scintillators with optical fibers as sensitive volume and readout by SiPM photo-diodes, is investigated. SiRO shall be used for monitoring cosmic muons primarily based on amplitude discrimination. The detector iTagPro technology concept foresees a stack of 6 active layers, grouped in 3 sandwiches for determining the muon trajectories through three planes. The attenuation of the sunshine response alongside the optical fiber and across the channels have been examined. The measurements of the incident muons based on the input amplitude discrimination point out that this process is not efficient and ItagPro therefore not enough, as solely about 30% of the measured events may very well be used within the reconstruction of the muon trajectories. Based on the studies presented in this paper, iTagPro features the format used for building the SiRO detector shall be changed as effectively because the analog acquisition method will likely be changed by a digital one.

On this course we intention to setup a multi-function, mobile muon tracking detector based mostly on SiPM readout, called SiRO, the SiPM ReadOut muon detector. The purpose of the present paper is to research the possibility to determine the muon incidence and their trajectories using scintillator iTagPro technology layers readout via optical fibers viewed by SiPM units and portable tracking tag analysing the amplitude of the occasions. The general idea of the SiRO detector iTagPro technology is offered as well as checks and measurements with a setup of two first detection modules are described. Unirea salt mine from Slanic Prahova, Romania. The fist prototype is composed of 6 lively layers (Fig. 1), every layer consisting of 4 detection modules. 3 with 12 parallel and equidistant ditches on its surface, each ditch filled with optical fibers. Two adjacent optical fibers are linked to a SiPM machine to type a channel, so that each detection module have six channels. In Figure 2 a sketch of 1 energetic layer is introduced.

Each group of two active layers (from top to backside), with the optical fibers positioned on perpendicular directions, represent a sandwich, which ought to decide the place in the input XY aircraft of the incident charged particle. Thus, as we are able to see in Fig. 1, iTagPro technology six energetic layers with four SiRO modules each, grouped in three sandwiches, are put in coincidence to permit the reconstruction of the muon trajectory. The six lively layers are indicated as Det1 to Det6 and contain 24 channels each, so the whole system will give information from 144 particular person channels. The 24 signals from every active layer are used as an input by a trigger module to create coincidences by a certain multiplicity standards in order to produce a trigger sign, marking an event of interest. The trigger signal is distributed by daisy chain alongside three modules 64 Channel Digitizer (V1740 CAEN). These modules enable to open an acquisition window with chosen pre-trigger time, best item finder gadget compensating in this way the necessary delay to produce the trigger pulse.

A USB2.Zero Bridge (V1718 CAEN) is used to switch the digitized signals to a Pc. Each channel of the digitizer has a SRMA reminiscence, where the occasion may be readout through the use of the PCI-VME bridge module. The occasions are read sequentially and transmitted to the computer. To check the performances of the planned SiRO detector, i.e. its properties, as well as its fluctuations related to bias voltage, iTagPro technology temperature, or the space between the interplay level and the SiPM system, two detection modules have been built and placed in packing containers for ItagPro optical screening. To interpret the light signal produced on the interplay of a charged particle with the sensitive volume of the detector, gadgets like photomultipliers or photodiodes are used to convert the sunshine yield into electrical output by photoelectric impact. Similar to photodiodes, a Silicon Photomultiplier is a semiconductor machine, however their delicate volume is divided into a matrix of lots of of independent micro-cells, iTagPro technology additionally named pixels, linked in parallel. Each micro-cell is operated in Geiger mode, the output signal of the SiPM machine being proportional with the number of impartial pixels triggered simultaneously.