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Figure shows the dark current density measured for RE2/2 chamber at different values of collected integrated charge. The plot shows a stable dark current in time and after collecting 650 mC/cm^2. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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Figures show the dark currents monitoring of both RE2/2 irradiated and reference chambers, as a function of the integrated charge. The dark current measured at 6.5 kV (left), which represent the ohmic contribution, and at 9.6 kV (right), which also includes the gas amplification. The dark current is almost stable in time after collecting 650 mC/cm^2. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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This figure shows the average noise rate at 9.6 kV , monitored as a function of the integrated charge for both the RE2/2 irradiated and reference chamber. The noise rate is stable in time and after collecting 650 mC/cm^2. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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Shown the muon efficiency for the high resistivity graphite region, as function of high voltage. The working point is defined by fitting the efficiency curve with the following sigmoid formula: The working point voltage is then defined as WP = ln(19)/λ + HV(50%) + 150 V A working point of 6.82 kV is obtained with an efficiency of 99.1 %.Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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Shown the muon efficiency for the low resistivity graphite region, as function of high voltage. The working point is defined by fitting the efficiency curve with the following sigmoid formula: The working point voltage is then defined as WP = ln(19)/λ + HV(50%) + 150 V A working point of 6.89 kV is obtained with an efficiency of 97.3 %.Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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Shown the muon cluster size as function of high voltage, for the high resistivity graphite region. At working point, typically 4.9 strips are fired. Muon clusters are formed when adjacent strips within a time interval of 10 ns are fired. The error on the cluster size is estimated by altering the time interval with 10 +/- 4 ns. The defined error becomes larger at higher voltages as more streamers are present at higher voltages, leading to more muon clusters due to separated fired strips in time. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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Shown the muon cluster size as function of high voltage, for the low resistivity graphite region. At working point, typically 5.9 strips are fired. Muon clusters are formed when adjacent strips within a time interval of 10 ns are fired. The error on the cluster size is estimated by altering the time interval with 10 +/- 4 ns. The defined error becomes larger at higher voltages as more streamers are present at higher voltages, leading to more muon clusters due to separated fired strips in time. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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Shown the muon cluster size distribution at a fixed high voltage of 6800 V, close to the working point. Compared to the low graphite resistivity, the high resistivity graphite region exhibit narrower distribution (RMS from 2.33 to 1.66), shifted towards a lower cluster size (from 5.40 to 4.75). This effect is ascribed due to the difference in graphite resistivity, directly influencing cluster size through cross talk by the capacitive coupling of the strips. This behavior was also confirmed using analog pre-amplifiers. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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Shown the muon efficiency for the longitudinal strips as function of high voltage. The working point is defined by fitting the efficiency curve with the following sigmoid formula: The working point voltage is then defined as WP = ln(19)/λ + HV(50%) + 150 V A working point of 7.1 kV is measured with an efficiency of 98.7 %. The WP is slightly higher than the expected WP for a 1.4 mm chamber, as the measurement is performed at the high radius at a long distance from the electronics (~ 1.5 m), causing a small signal propagation loss along the strip.Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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Shown the muon efficiency for the orthogonal strips as function of high voltage. The working point is defined by fitting the efficiency curve with the following sigmoid formula: The working point voltage is then defined as WP = ln(19)/λ + HV(50%) + 150 V A working point of 7.2 kV is measured with an efficiency of 97.1 %. A higher WP is expected as the orthogonal strips are on the outer plane of the double gap, therefore sensitive to the induction of charges in one gap. Hence the orthogonal strips are effectively in single gap mode.Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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Shown the combined muon efficiency curves for the longitudinal (blue), orthogonal (red) and combined AND efficiency (black). Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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Shown the muon cluster size as function of high voltage, for the longitudinal direction, measured in the high radius region where the strip pitch is around 0.5 cm. Muon clusters are formed when adjacent strips within a time interval of 10 ns are fired. The error on the cluster size is estimated by altering the time interval with 10 +/- 4 ns. The defined error becomes larger at higher voltages as more streamers are present at higher voltages, leading to more muon clusters due to separated fired strips in time. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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Shown the muon cluster size as function of high voltage, for the orthogonal direction. The strip pitch is 5 cm. Muon clusters are formed when adjacent strips within a time interval of 10 ns are fired. The error on the cluster size is estimated by altering the time interval with 10 +/- 4 ns. At the working point, on average 2 strips are fired due to cross-talk between both strips. The defined error becomes larger at higher voltages as more streamers are present at higher voltages, leading to more muon clusters due to separated fired strips in time. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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This plot shows s-curves with dependencies of Muon Efficiency versus High Voltage Effective (HVeff) and Total Current for the second version of FEB with PETIROC2B (FEBv1b). Also, this slide showing the mean value of multiplicity for each side. AND efficiency showing without crosstalk impact. Data was taking during cosmic tests (September-November 2019). Scintillators placed in the LR of the chamber and covered about ~20cm. HR: 500-480=20DACu. (88±10fC) LR: 500-480=20DACu (88±10fC) HIGH VOLTAGE EFFECTIVE (X-axis) Effective HV takes into account the change in pressure and temperature with respect to an HV reference value V0 at given pressure P0 and temperature T0. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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This plot shows s-curves with dependencies of Muon Efficiency versus High Voltage Effective (HVeff) and Total Current for the second version of FEB with PETIROC2B (FEBv1b). Also, this slide showing the mean value of multiplicity for each side. AND efficiency showing without crosstalk impact. Data was taking during cosmic tests (September-November 2019). Scintillators placed in the HR of the chamber and covered about ~20cm. HR: 500-480=20DACu. (88±10fC) LR: 500-480=20DACu (88±10fC) HIGH VOLTAGE EFFECTIVE (X-axis) Effective HV takes into account the change in pressure and temperature with respect to an HV reference value V0 at given pressure P0 and temperature T0. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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This plot shows s-curves with dependencies of Muon Efficiency versus High Voltage Effective (HVeff) and Total Current for the second version of FEB with PETIROC2B (FEBv1b). Also, this slide showing the mean value of multiplicity for each side. AND efficiency showing without crosstalk impact. Data was taking during cosmic tests (September-November 2019). Scintillators placed in the HR of the chamber and covered about ~20cm. HR: 500-480=20DACu. (50±10fC) LR: 500-480=20DACu (50±10fC) HIGH VOLTAGE EFFECTIVE (X-axis) Effective HV takes into account the change in pressure and temperature with respect to an HV reference value V0 at given pressure P0 and temperature T0. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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This plot shows s-curves with dependencies of Muon Efficiency versus High Voltage Effective (HVeff) and Total Current for the second version of FEB with PETIROC2B (FEBv1b). Also, this slide showing the mean value of multiplicity for each side. AND efficiency showing without crosstalk impact. Data was taking during cosmic tests (September-November 2019). Scintillators placed in the HR of the chamber and covered about ~20cm. High level of cross-talk effect. HR: 500-480=20DACu. (26±10fC) LR: 500-480=20DACu (26±10fC) HIGH VOLTAGE EFFECTIVE (X-axis) Effective HV takes into account the change in pressure and temperature with respect to an HV reference value V0 at given pressure P0 and temperature T0. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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This plot shows the measured cluster rate (left y-axis) and the total current of GAPs (right y-axis) versus 1/ATT (ATT - Attenuation factor for gamma source). In addition, We plot linear fit function for cluster rate vs 1/ATT. Data for this plot was taking in GIF++ during September-November 2019 with RETURN iRPC prototype equipped with Cyclone 5 and PETIRC2B (FEBv1b). Triggers system includes 3 protected scintillators inside the bunker. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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This plot shows dependencies of Muon Efficiency versus cluster rate (left y-axis). Efficiency showing without crosstalk impact. Second set of point (right y-axis) present WP vs cluster rate. Data for this plot was taking in GIF++ during September-November 2019 with RETURN iRPC prototype equipped with Cyclone 5 and PETIRC2B (FEBv1b). Triggers system includes 3 protected scintillators inside the bunker. HIGH VOLTAGE EFFECTIVE (Y-axis, right) Effective HV takes into account the change in pressure and temperature with respect to an HV reference value V0 at given pressure P0 and temperature T0. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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This plot shows s-curves with dependencies of Muon Efficiency versus High Voltage Effective (HVeff) and Total Current for the second version of FEB with PETIROC2B (FEBv1b). Also, this slide showing the mean value of multiplicity for each side. AND efficiency showing without crosstalk impact. Data was taking during GIF++ (ATT=46000) cosmic tests (September-November 2019). Scintillators placed in the HR of the chamber and covered about ~20cm. This setup includes three protected with leads scintillators inside GIF++ (without outside scintillators) HR: 500-480=20DACu. (50±10fC) LR: 500-480=20DACu (50±10fC) HIGH VOLTAGE EFFECTIVE (X-axis) Effective HV takes into account the change in pressure and temperature with respect to an HV reference value V0 at given pressure P0 and temperature T0. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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This plot shows s-curves with dependencies of Muon Efficiency versus High Voltage Effective (HVeff) for the second version of FEB with PETIROC2B (FEBv1b). Also, this slide showing the mean value of multiplicity for each side. AND efficiency showing without crosstalk impact. Data was taking during GIF++ (ATT=4.6) cosmic tests (September-November 2019). Scintillators placed in the HR of the chamber and covered about ~20cm. This setup includes three protected with leads scintillators inside GIF++ (without outside scintillators) HR: 500-480=20DACu. (50±10fC) LR: 500-480=20DACu (50±10fC) HIGH VOLTAGE EFFECTIVE (X-axis) Effective HV takes into account the change in pressure and temperature with respect to an HV reference value V0 at given pressure P0 and temperature T0. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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This plot shows s-curves with dependencies of Muon Efficiency versus High Voltage Effective (HVeff) for the second version of FEB with PETIROC2B (FEBv1b). Also, this slide showing the mean value of multiplicity for each side. AND efficiency showing without crosstalk impact. Data was taking during GIF++ (ATT=3.3) cosmic tests (September-November 2019). Scintillators placed in the HR of the chamber and covered about ~20cm. This setup includes three protected with leads scintillators inside GIF++ (without outside scintillators) HR: 500-480=20DACu. (50±10fC) LR: 500-480=20DACu (50±10fC) HIGH VOLTAGE EFFECTIVE (X-axis) Effective HV takes into account the change in pressure and temperature with respect to an HV reference value V0 at given pressure P0 and temperature T0. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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This plot show dependencies of noise of detector per stripversus High Voltage Effective (HVeff) for FEBv1A48R. Data was taking during COSMIC904 tests (May 2019). Strips (X-axis) The strip of PCB. PCB has 48 strips have surface 137 cm^2. HIGH VOLTAGE EFFECTIVE (Y-axis) Effective HV takes into account the change in pressure and temperature with respect to an HV reference value V0 at given pressure P0 and temperature T0. RATE (Z-axis) Rate take in account hits from both ends of the chamber. This gives the real background of chamber at given HV. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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This plot show dependencies of noise of detector per stripversus High Voltage Effective (HVeff) for FEBv1A48R. Data was taking during COSMIC904 tests (May 2019). Strips (X-axis) The strip of PCB. PCB has 48 strips have surface 137 cm^2. HIGH VOLTAGE EFFECTIVE (Y-axis) Effective HV takes into account the change in pressure and temperature with respect to an HV reference value V0 at given pressure P0 and temperature T0. RATE (Z-axis) Rate take in account hits from both ends of the chamber. This gives the real background of chamber at given HV. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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This plot show dependencies of noise of detector per stripversus High Voltage Effective (HVeff) for FEBv1A48R. Data was taking during COSMIC904 tests (May 2019). Strips (X-axis) The strip of PCB. PCB has 48 strips have surface 137 cm^2. HIGH VOLTAGE EFFECTIVE (Y-axis) Effective HV takes into account the change in pressure and temperature with respect to an HV reference value V0 at given pressure P0 and temperature T0. RATE (Z-axis) Rate take in account hits from both ends of the chamber. This gives the real background of chamber at given HV. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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This plot show dependencies of noise and dark current of gaps versus High Voltage Effective (HVeff) for FEBv1B48R. Data was taking during GIF++ tests (October 2019). Strips (Y-axis) Dark current of gaps or hit rate per cm^2. HIGH VOLTAGE EFFECTIVE (X-axis) Effective HV takes into account the change in pressure and temperature with respect to an HV reference value V0 at given pressure P0 and temperature T0. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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Conceptually, we want the eye to be as “open” as possible, as a larger eye opening implies that we have more margin to the voltage and timing requirements. The eye must be wide enough to provide adequate time to satisfy the setup and hold requirement of the receiver, and have sufficient height to ensure that the voltage levels meet vih and vil requirements in a system that may possess multiple sources of noise. This allows the receiver to resolve the input signals successfully into digital values. BER : Bit Error Rate (Number of error per total number of transmitted bits during the specific time) Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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According to the Fluka simulation, the total irradiation dose (TID) in the balcony will be 0.001-10 Gy @ 3000fb^-1, the neutron flux will be 1x10^4 cm^-2s^-1 @5 x 10^34 cm^-2s^-1 and the Neutron Fluence for 10 years of operation of the HL-LHC will be 1x10^12 cm-2. The new Link board components has been chosen from Commercial of the shelf (COTS) which are validated for radiation at the level of 300 Gy and Maximum tolerable TID of KINTEX-7 (XC7K160T) is 3400-4500 Gy. Based on our estimation, the Scrub Rate of entire FPGA will take for (Real time SEU detection and Correction) about 13ms. The Single Event upset (SEU) rate on configuration memory is one SEU every 413 second and 1 SEU every 1695 second at Block RAM. In addition the Triple Modular Redundancy (TMR) and Configuration Scrubbing has been used in developing the firmware which mitigate the SEUs. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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[1] Sabino Meola, etc, on behalf of the CMS Collaboration. "Towards a two-dimensional readout of the improved CMS Resistive Plate Chamber with a new front-end electronics". arXiv:2006.00576. https://arxiv.org/abs/2006.00576
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Shows the muon efficiency for longitudinal (left) and orthogonal (right) strips. For longitudinal strips, a working point of 7074V is measured with an efficiency of 97.7 % and for orthogonal strips the working point of 7223V is measured with an efficiency of 96.0 %. The result is in accordance with the previous CAEN TDC readout, indicating the reliability of BEE readout. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
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The delay between trigger and strip signal is studied. For the left plot, the fitted delay agrees with the setting value of 22.5ns. For the right plot, the fitted delay agrees with the different setting of 47.5ns. Timing profile is shifting as desired, indicating the delay is adjustable by BEE slow controller. Contact: cms-dpg-conveners-rpc@SPAMNOTcern.ch |
I | Attachment | History | Action | Size | Date | Who | Comment |
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bee1.pdf | r1 | manage | 44.8 K | 2020-11-02 - 00:28 | AndresCabrera | |
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bee1.png | r1 | manage | 64.1 K | 2020-11-02 - 00:28 | AndresCabrera | |
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bee2.pdf | r1 | manage | 45.4 K | 2020-11-02 - 00:28 | AndresCabrera | |
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bee2.png | r1 | manage | 80.4 K | 2020-11-02 - 00:28 | AndresCabrera | |
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bee3.pdf | r1 | manage | 52.6 K | 2020-11-02 - 00:27 | AndresCabrera | |
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bee3.png | r1 | manage | 122.0 K | 2020-11-02 - 00:28 | AndresCabrera | |
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bee4.pdf | r1 | manage | 51.3 K | 2020-11-02 - 00:27 | AndresCabrera | |
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bee4.png | r1 | manage | 142.6 K | 2020-11-02 - 00:27 | AndresCabrera | |
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clu1.png | r1 | manage | 164.4 K | 2020-11-01 - 22:47 | AndresCabrera | |
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clu2.png | r1 | manage | 171.2 K | 2020-11-01 - 22:47 | AndresCabrera | |
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dark1.pdf | r1 | manage | 102.9 K | 2020-11-01 - 21:42 | AndresCabrera | |
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dark1.png | r1 | manage | 104.7 K | 2020-11-01 - 17:25 | AndresCabrera | |
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dark1a.png | r1 | manage | 252.1 K | 2020-11-02 - 00:59 | AndresCabrera | |
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dark2.pdf | r1 | manage | 36.9 K | 2020-11-01 - 21:42 | AndresCabrera | |
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dark2.png | r1 | manage | 48.3 K | 2020-11-01 - 17:25 | AndresCabrera | |
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dark2a.png | r1 | manage | 118.6 K | 2020-11-02 - 00:59 | AndresCabrera | |
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dark3.pdf | r1 | manage | 36.0 K | 2020-11-01 - 21:42 | AndresCabrera | |
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dark3.png | r1 | manage | 41.4 K | 2020-11-01 - 17:25 | AndresCabrera | |
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dark3a.png | r1 | manage | 126.8 K | 2020-11-02 - 00:59 | AndresCabrera | |
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dark4.pdf | r1 | manage | 35.9 K | 2020-11-01 - 21:42 | AndresCabrera | |
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dark4.png | r1 | manage | 63.8 K | 2020-11-01 - 17:25 | AndresCabrera | |
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dark4a.png | r1 | manage | 125.3 K | 2020-11-02 - 00:59 | AndresCabrera | |
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dark5.pdf | r1 | manage | 30.1 K | 2020-11-01 - 21:42 | AndresCabrera | |
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dark5.png | r1 | manage | 46.3 K | 2020-11-01 - 17:25 | AndresCabrera | |
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dark5a.png | r1 | manage | 101.8 K | 2020-11-02 - 00:59 | AndresCabrera | |
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dark6.pdf | r1 | manage | 30.2 K | 2020-11-01 - 21:42 | AndresCabrera | |
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dark6.png | r1 | manage | 61.7 K | 2020-11-01 - 17:25 | AndresCabrera | |
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dark6a.png | r1 | manage | 124.0 K | 2020-11-02 - 00:59 | AndresCabrera | |
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efi1.png | r1 | manage | 224.0 K | 2020-11-01 - 22:47 | AndresCabrera | |
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efi2.png | r1 | manage | 223.8 K | 2020-11-01 - 22:47 | AndresCabrera | |
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efi3.png | r1 | manage | 225.1 K | 2020-11-01 - 22:47 | AndresCabrera | |
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efi4.png | r1 | manage | 235.0 K | 2020-11-01 - 22:47 | AndresCabrera | |
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efi5.png | r1 | manage | 252.0 K | 2020-11-01 - 22:47 | AndresCabrera | |
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grap1.pdf | r1 | manage | 206.5 K | 2020-11-01 - 22:10 | AndresCabrera | |
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grap1.png | r1 | manage | 226.5 K | 2020-11-01 - 22:10 | AndresCabrera | |
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grap2.pdf | r1 | manage | 211.2 K | 2020-11-01 - 22:34 | AndresCabrera | |
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grap2.png | r1 | manage | 235.1 K | 2020-11-01 - 22:34 | AndresCabrera | |
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grap3.png | r1 | manage | 164.8 K | 2020-11-01 - 22:47 | AndresCabrera | |
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grap4.png | r1 | manage | 170.4 K | 2020-11-01 - 22:47 | AndresCabrera | |
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grap5.png | r1 | manage | 171.2 K | 2020-11-01 - 22:47 | AndresCabrera | |
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heff1.png | r1 | manage | 104.8 K | 2020-11-02 - 08:48 | AndresCabrera | |
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irpc1.png | r1 | manage | 110.4 K | 2020-11-02 - 01:50 | AndresCabrera | |
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irpc2.png | r1 | manage | 126.9 K | 2020-11-02 - 01:50 | AndresCabrera | |
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irpc3.png | r1 | manage | 119.9 K | 2020-11-02 - 01:50 | AndresCabrera | |
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irpc4.png | r1 | manage | 122.6 K | 2020-11-02 - 01:50 | AndresCabrera | |
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irpc5.png | r1 | manage | 131.4 K | 2020-11-02 - 01:50 | AndresCabrera | |
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irpc6.png | r1 | manage | 82.2 K | 2020-11-02 - 01:50 | AndresCabrera | |
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irpc7.png | r1 | manage | 110.2 K | 2020-11-02 - 01:50 | AndresCabrera | |
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irpc8.png | r1 | manage | 115.2 K | 2020-11-02 - 01:50 | AndresCabrera | |
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irpc9.png | r1 | manage | 120.9 K | 2020-11-02 - 01:50 | AndresCabrera | |
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link1.png | r1 | manage | 232.6 K | 2020-11-02 - 00:52 | AndresCabrera | |
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link2.png | r1 | manage | 154.7 K | 2020-11-02 - 00:52 | AndresCabrera | |
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new1.pdf | r1 | manage | 107.8 K | 2020-11-02 - 01:15 | AndresCabrera | |
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new1.png | r1 | manage | 597.7 K | 2020-11-02 - 01:15 | AndresCabrera | |
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new2.pdf | r1 | manage | 293.2 K | 2020-11-02 - 01:15 | AndresCabrera | |
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new2.png | r1 | manage | 1170.1 K | 2020-11-02 - 01:15 | AndresCabrera | |
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new3.pdf | r1 | manage | 93.6 K | 2020-11-02 - 01:15 | AndresCabrera | |
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new3.png | r1 | manage | 289.2 K | 2020-11-02 - 01:14 | AndresCabrera | |
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noi1.png | r1 | manage | 294.0 K | 2020-11-02 - 01:49 | AndresCabrera | |
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noi2.png | r1 | manage | 304.6 K | 2020-11-02 - 01:49 | AndresCabrera | |
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noi3.png | r1 | manage | 295.6 K | 2020-11-02 - 01:49 | AndresCabrera | |
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noi4.png | r1 | manage | 102.3 K | 2020-11-02 - 01:49 | AndresCabrera | |
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sig1.png | r1 | manage | 66.5 K | 2020-11-01 - 22:27 | AndresCabrera |