Muon Telescope Data
Experimental Set Up
Earlier, the energy loss of a muon passing through the old scintillator samples was determined to be 5.6 MeV. The width of all new (DMR-__) plastic scintillators was measured to be 2.5 cm. As a result, the energy deposited by a muon passing through the scintillator should be 6.67 MeV.
The reduction code and Root graphing program were used to analyze the data files. The first 50 bins were used to determine a baseline which was subtracted from the rest of the data. The pulse was integrated from bins 50 to 190 to get a pulse area.
| Table 1: List of Muon Telescope Results |
| Date | Sample Tested | GdTIP Loading Mass Percentage (need to be confirmed) | Sample Length (cm) | Middle PMT Bias Voltage (kV) | Raw Data File | Fit Mean (nVs) | Fit Range |
| 2016/07/11 | DMR-01 | 0% | 3.192 +/- 0.002 | 2.00 | 20160701_muon_2000v_DMR09.dat | 102.6 +/- 2.6 | 93-112 |
| 2016/06/28 | DMR-07 | 0.05% | 3.756 +/- 0.002 | 1.99 | 20160628_muon_2000v_DMR07.dat | 110.2 +/- 2.4 | 102-118.5 |
| 2016/07/14 | DMR-06 | 0.1% | 2.772 +/- 0.002 | 2.00 | 20160714_muon_2000v_DMR06.dat | 96.8+/- 2.5 | 88-106 |
| 2016/07/01 | DMR-09 | 0.15% | 3.781 +/- 0.002 | 2.00 | 20160711_muon_2000v_DMR01.dat | 118.4 +/- 2.6 | 109-128 |
Energy Spectrum of DMR-07
| Figure 1: Area under the pulse fit to a gaussian. |
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Muon run. channel 0: middle PMT, R1332 @ -1990V, DMR-07 Gd-loaded scintillator. channel 1: bottom PMT, 8575B @ -1703V, generic scintillator, -300mV discriminator threshold. channel 2: top PMT #14 @ -1230.V, generic scintillator, -180mV threshold. scope triggers when channel 1 & 2 are above threshold within 100 ns coincidence window.
Energy Spectrum of DMR-09
| Figure 2: Area under the pulse fit to a gaussian. |
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Muon run. channel 0: middle PMT, R1332 @ -2.00kV, DMR-09 Gd-loaded scintillator. channel 1: bottom PMT, 8575B @ -1.704kV, generic scintillator, -300mV discriminator threshold. channel 2: top PMT #14 @ -1.225kV, generic scintillator, -180mV threshold. scope triggers when channel 1 & 2 are above threshold within 100 ns coincidence window.
Energy Spectrum of DMR-01
| Figure 3: Area under the pulse fit to a gaussian. |
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Muon run. channel 0: middle PMT, R1332 @ -2.00kV, DMR-01 non-Gd-loaded scintillator. channel 1: bottom PMT, 8575B @ -1.704kV, generic scintillator, -300mV discriminator threshold. channel 2: top PMT #14 @ -1.224kV, generic scintillator, -180mV threshold. scope triggers when channel 1 & 2 are above threshold within 100 ns coincidence window.
Energy Spectrum of DMR-06
| Figure 4: Area under the pulse fit to a gaussian. |
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Muon run. channel 0: middle PMT, R1332 @ -2.00kV, DMR-06 Gd-loaded scintillator. channel 1: bottom PMT, 8575B @ -1.704kV, generic scintillator, -300mV discriminator threshold. channel 2: top PMT #14 @ -1.225kV, generic scintillator, -180mV threshold. scope triggers when channel 1 & 2 are above threshold within 100 ns coincidence window.
Analysis
| Figure 5: Area under the pulse fit to a gaussian. |
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| Figure 6: Area under the pulse fit to a gaussian. |
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Conclusion