MEPION

The possibility to build a SiPM-readout muon detector (SiRO), using plastic scintillators with optical fibers as delicate volume and readout by SiPM photo-diodes, is investigated. SiRO shall be used for tracking cosmic muons based on amplitude discrimination. The detector idea foresees a stack of 6 active layers, grouped in 3 sandwiches for determining the muon trajectories through three planes. The attenuation of the light response alongside the optical fiber and across the channels have been examined. The measurements of the incident muons primarily based on the enter amplitude discrimination indicate that this procedure just isn't efficient and subsequently not sufficient, as only about 30% of the measured occasions could possibly be used within the reconstruction of the muon trajectories. Based on the studies presented in this paper, the format used for constructing the SiRO detector shall be changed as effectively because the analog acquisition technique will likely be changed by a digital one.

On this course we goal to setup a multi-objective, cellular muon tracking detector iTagPro shop primarily based on SiPM readout, iTagPro shop known as SiRO, iTagPro technology the SiPM ReadOut muon detector. The intention of the current paper is to investigate the chance to determine the muon incidence and ItagPro their trajectories using scintillator layers readout by means of optical fibers considered by SiPM gadgets and analysing the amplitude of the occasions. The overall concept of the SiRO detector is offered in addition to assessments and iTagPro shop 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. Three with 12 parallel and equidistant ditches on its surface, every ditch filled with optical fibers. Two adjacent optical fibers are connected to a SiPM system to type a channel, so that each detection module have six channels. In Figure 2 a sketch of one lively layer is introduced.

Each group of two energetic layers (from top to backside), with the optical fibers positioned on perpendicular directions, signify a sandwich, which ought to decide the place within the input XY aircraft 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 lively layers are indicated as Det1 to Det6 and contain 24 channels every, ItagPro so the entire system will give information from 144 particular person channels. The 24 signals from every active layer are used as an input by a set off module to create coincidences by a sure multiplicity standards so as to produce a set off signal, marking an event of interest. The trigger sign is sent by daisy chain alongside three modules sixty four Channel Digitizer (V1740 CAEN). These modules enable to open an acquisition window with selected pre-trigger time, compensating in this fashion the required delay to produce the set off pulse.

A USB2.0 Bridge (V1718 CAEN) is used to transfer the digitized indicators to a Pc. Each channel of the digitizer has a SRMA memory, where the occasion might be readout through the use of the PCI-VME bridge module. The events are learn sequentially and transmitted to the computer. To check the performances of the deliberate SiRO detector, iTagPro shop i.e. its properties, as well as its fluctuations related to bias voltage, temperature, or the gap between the interplay point and the SiPM gadget, two detection modules have been constructed and positioned in containers for optical screening. To interpret the light sign produced at the interaction of a charged particle with the sensitive volume of the detector, units 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 system, but their delicate volume is divided right into a matrix of lots of of impartial micro-cells, iTagPro shop also named pixels, ItagPro connected 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 concurrently.