For an Event to Be Valid > 자유게시판

The likelihood to construct a SiPM-readout muon detector (SiRO), using plastic scintillators with optical fibers as sensitive volume and readout by SiPM photograph-diodes, is investigated. SiRO shall be used for monitoring cosmic muons based on amplitude discrimination. The detector concept foresees a stack of 6 lively layers, grouped in three sandwiches for figuring out the muon trajectories via 3 planes. The attenuation of the sunshine response alongside the optical fiber and across the channels have been tested. The measurements of the incident muons based on the input amplitude discrimination indicate that this process just isn't environment friendly and subsequently not sufficient, as solely about 30% of the measured events may very well be used in the reconstruction of the muon trajectories. Based on the studies introduced in this paper, the structure used for building the SiRO detector will likely be changed as effectively as the analog acquisition approach might be replaced by a digital one.

In this course we intention to setup a multi-goal, cell muon tracking detector iTagPro key finder primarily based on SiPM readout, known as SiRO, the SiPM ReadOut muon detector. The aim of the current paper is to investigate the possibility to find out the muon incidence and their trajectories utilizing scintillator layers readout through optical fibers considered by SiPM units and analysing the amplitude of the events. The overall concept of the SiRO detector is offered in addition to 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 energetic layers (Fig. 1), every layer consisting of 4 detection modules. 3 with 12 parallel and equidistant ditches on its floor, each ditch full of optical fibers. Two adjacent optical fibers are related to a SiPM gadget to form 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 energetic layers (from prime to backside), with the optical fibers positioned on perpendicular instructions, symbolize a sandwich, iTagPro key finder which ought to decide the position within the input XY airplane of the incident charged particle. Thus, as we will see in Fig. 1, six active layers with 4 SiRO modules each, grouped in three sandwiches, are put in coincidence to permit the reconstruction of the muon trajectory. The six active layers are indicated as Det1 to Det6 and comprise 24 channels each, so the entire system will give info from 144 individual channels. The 24 signals from each active layer are used as an input by a trigger module to create coincidences by a sure multiplicity standards so as to produce a trigger signal, marking an occasion of curiosity. The trigger sign is shipped by daisy chain alongside three modules sixty four Channel Digitizer (V1740 CAEN). These modules permit to open an acquisition window with chosen pre-set off time, compensating in this manner the required delay to produce the trigger pulse.

A USB2.Zero Bridge (V1718 CAEN) is used to transfer the digitized indicators to a Pc. Each channel of the digitizer has a SRMA reminiscence, the place the event will be readout by utilizing the PCI-VME bridge module. The events are read sequentially and transmitted to the computer. To test the performances of the planned SiRO detector, i.e. its properties, in addition to its fluctuations associated to bias voltage, temperature, or the distance between the interplay level and the SiPM machine, two detection modules have been constructed and positioned in packing containers for optical screening. To interpret the sunshine sign produced on the interaction of a charged particle with the sensitive volume of the detector, units like photomultipliers or photodiodes are used to transform the light yield into electrical output via photoelectric impact. Similar to photodiodes, a Silicon Photomultiplier is a semiconductor device, however their delicate quantity is divided right into a matrix of lots of of independent micro-cells, also named pixels, related in parallel. Each micro-cell is operated in Geiger mode, the output signal of the SiPM system being proportional with the number of independent pixels triggered concurrently.