The possibility to build a SiPM-readout muon detector (SiRO), using plastic scintillators with optical fibers as delicate volume and readout by SiPM picture-diodes, is investigated. SiRO shall be used for monitoring cosmic muons based mostly on amplitude discrimination. The detector concept foresees a stack of 6 active layers, grouped in three sandwiches for figuring out the muon trajectories by 3 planes. The attenuation of the light response along the optical fiber and throughout the channels have been tested. The measurements of the incident muons based mostly on the enter amplitude discrimination point out that this procedure shouldn't be efficient and 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, the layout used for building the SiRO detector shall be changed as effectively because the analog acquisition approach can be changed by a digital one.

In this course we intention to setup a multi-objective, mobile muon monitoring detector based on SiPM readout, called SiRO, the SiPM ReadOut muon detector. The intention of the present paper is to analyze the chance to determine the muon incidence and their trajectories using scintillator layers readout through optical fibers seen by SiPM gadgets and analysing the amplitude of the events. The general concept of the SiRO detector is offered in addition to assessments 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 energetic layers (Fig. 1), every layer consisting of 4 detection modules. 3 with 12 parallel and iTagPro tracker equidistant ditches on its floor, every ditch crammed with optical fibers. Two adjoining optical fibers are connected to a SiPM device to form a channel, so that every detection module have six channels. In Figure 2 a sketch of 1 active layer is introduced.

Each group of two energetic layers (from high to backside), with the optical fibers positioned on perpendicular instructions, characterize a sandwich, which should decide the position in the enter XY plane of the incident charged particle. Thus, as we will see in Fig. 1, six active layers with four SiRO modules each, grouped in three sandwiches, are put in coincidence to allow the reconstruction of the muon trajectory. The six active layers are indicated as Det1 to Det6 and comprise 24 channels every, so the whole system will give information from 144 individual channels. The 24 alerts from every energetic layer are used as an enter by a set off module to create coincidences by a certain multiplicity standards so as to supply a trigger signal, marking an event of interest. The set off sign is distributed by daisy chain alongside three modules sixty four Channel Digitizer (V1740 CAEN). These modules enable to open an acquisition window with selected pre-set off time, iTagPro tracker compensating in this fashion the necessary delay to produce the set off pulse.

A USB2.Zero Bridge (V1718 CAEN) is used to transfer the digitized signals to a Pc. Each channel of the digitizer has a SRMA memory, the place the occasion might be readout by utilizing the PCI-VME bridge module. The events are learn 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, temperature, or the distance between the interplay point and ItagPro the SiPM machine, two detection modules have been constructed and positioned in containers for ItagPro optical screening. To interpret the light signal produced at the interaction of a charged particle with the delicate volume of the detector, devices like photomultipliers or photodiodes are used to convert the sunshine yield into electrical output by photoelectric impact. Just like photodiodes, a Silicon Photomultiplier is a semiconductor machine, but their delicate quantity is divided right into a matrix of hundreds of unbiased micro-cells, additionally named pixels, linked in parallel. Each micro-cell is operated in Geiger mode, the output sign of the SiPM gadget being proportional with the number of impartial pixels triggered concurrently.