Difference between revisions of "MainPage:Nuclear:KaonDetector:PMTCharacteristics:LogBook"

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! "background:#f5f5f5;" style="text-align:center; background:lavender; font-weight:bold; width:35%;" | Description and observations
 
! "background:#f5f5f5;" style="text-align:center; background:lavender; font-weight:bold; width:35%;" | Description and observations
 
! "background:#f5f5f5;" style="text-align:center; background:lavender; font-weight:bold; width:18%;" | Image
 
! "background:#f5f5f5;" style="text-align:center; background:lavender; font-weight:bold; width:18%;" | Image
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| 1589 ||07/03/2014 || Derek || XP4500/B 09641 || -1.700 (VME) || Scan ||  Testing the scanning method for large-diameter PMTs. Same setup as Marco's previous runs, -1.700 (VME), 100x100 steps in motor with 30 pulses at each step, 450 step size for 1.8 degree rotation. || [[File:1589.png|frameless]]
 
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| 1594 ||07/03/2014 || Derek || XP4500/B 09641 || -1.500 (VME) || Scan ||  Turned down HV and LED intensity while also rotating the PMT 180 degrees to see if the problems in 1989 were caused by the scanning method or the PMT. || [[File:1594.png|frameless]]
 
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| 1597 || 07/07/2014 || Derek/Marco || HMS || -1.700 (VME) || Scan ||  100x100x30. Optical fiber removed. || [[File:1597.png|frameless]]}
 
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| 1686 || 07/10/2014 || Derek/Marco || HMS || -1.700 (VME) || Scan ||  25x25x30. Optical fiber removed. Collimator cleaned. White attenuation paper placed in front of LED in order to stabilize LED during pulses by allowing for greater intensity. || [[File:1686.png|frameless]]
 
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| 1691 || 07/10/2014 || Derek/Marco || HMS || -1.700 (VME) || Scan ||  25x25x30. Paper removed, intensity decreased, rotated 90 degrees counter-clockwise || [[File:1691.png|frameless]]
 
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| 1692 || 07/11/2014 || Derek/Marco || HMS || -1.700 (VME) || Scan ||  25x25x30. Rotated 90 degrees counter-clockwise || [[File:1692.png|frameless]]
 
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| 1696 || 07/11/2014 || Derek/Marco || HMS || -1.700 (VME) || Scan ||  25x25x30. Rotated 90 degrees counter-clockwise. Replaced base 5B (Serial Number 806058) with base 101, More uniformity, but very low gains. Most likely due to the fact that the PMT was a couple of centimeters away when this scan took place.  || [[File:1696.png|frameless]]
 
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| 1710 || 07/11/2014 || Derek/Marco || HMS || -1.700 (VME) || Scan ||  25x25x30. Increased proximity of PMT to the LED and also increased the intensity of the LED, yielding near maxed out gains. Similar to the plots Marco produced last year. Promising for future tests.  || [[File:1710.png|frameless]]
 
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| 1719 || 07/11/2014 || Derek/Marco || HMS || -1.700 (VME) || Scan ||  100x100x30. Implemented attenuating paper into collimator design in order to stabilize the light emitted from the LED. Created a foam structure to keep the PMT in place and centered along the path of the LED scanner.  || [[File:1719.png|frameless]]
 
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| 1736 || 07/15/2014 || Derek || XP4500/B || -1.700 (VME) || Scan ||  100x100x30. Going back to XP4500/B after fixing the problems with the scanning setup. There was a bit of operator error here, as I accidentally stopped the scan prematurely, causing the line of 0's down the middle.  || [[File:1736.png|frameless]]
 
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| 1816|| 07/18/2014 || Derek/Marco || R1584 || -1.500 (VME) || PMT Gain ||  Testing gain of PMT by using the minimum amount of LED intensity to get a signal from the PMT.  || [[File:1816.png|frameless]]
 
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| 1817|| 07/18/2014 || Derek/Marco || R1584 || -1.800 (VME) || PMT Gain ||  Testing gain of PMT by using the minimum amount of LED intensity to get a signal from the PMT. I was unclear what the difference between the single electron peak and the mean of the data was. Also, Excel does not have a Gaussian fit function, so essentially I had to fit it by eye, which may not be accurate enough for UVa's taste.    || [[File:1817.png|frameless]]
 
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| 1821 || 07/18/2014 || Derek/Marco || R1584 || -1.800 (VME) || Scan ||  100x100x30. First scan of UVA PMT after receiving the base from J-Lab.  || [[File:1821.png|frameless]]
 
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| 1822 || 07/22/2014 || Derek/Marco || R1584 || -1.800 (VME) || Scan ||  100x100x30. Second scan of UVA PMT after receiving the base from J-Lab. Rotated 180 degrees from 1821.  || [[File:1822.png|frameless]]
 
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| 1870 || 07/28/2014 || Alex || XP4500 || -1.800 (VME) || Gain || Tested with Alex's apparatus for testing scattering length. XP4500/B || [[File:1870.png|frameless]]
 
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| 1902 || 08/01/2014 || Derek || R1584 || -1.800 (VME) || Scan || Higher intensity scan of UVA PMT. Returned similar results to previous scans. No rotation.  || [[File:1902.png|frameless]]
 
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|1902 || 08/04/2014 || Derek || XP4500 || -1.800 (VME) || Scan || Plot horizontal face of PMT in terms of the central position being a value of 1.  || [[File:horizontalface.png|frameless]]
 
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| 1902 || 08/04/2014 || Derek || R1584 || -1.800 (VME) || Scan || Plotted vertical face of PMT in terms of central position being one. Collection efficiency plot.  || [[File:verticalface.png|frameless]]
 
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| 1947 || 08/07/2014 || Derek || R1584 || -1.800 (VME) || Scan || Another scan of R1584, this time with oil to get rid of motor sticking. Also found a ruler hindering complete range on the horizontal axis.  || [[File:1947.png|frameless]]
 
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| 1948 || 08/08/2014 || Derek || XP4500 || -1.800 (VME) || Gain || Gain test for XP4500  || [[File:1948.png|frameless]]
 
 
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| 2759 || 11/12/2015 || Marco || XP2262 (SN 34426) || -2.300 (NIM) || Gain || LED (green) gain calibration for NPS light yield. Na22 source is also inside, so may have noise. Rate of ~6.5kHz. T=18oC. SEP: 67.23 (fit range 55-85). PED: 27.66 (fit range 25-35). || [[File:2759.png|frameless]]
 
| 2759 || 11/12/2015 || Marco || XP2262 (SN 34426) || -2.300 (NIM) || Gain || LED (green) gain calibration for NPS light yield. Na22 source is also inside, so may have noise. Rate of ~6.5kHz. T=18oC. SEP: 67.23 (fit range 55-85). PED: 27.66 (fit range 25-35). || [[File:2759.png|frameless]]

Revision as of 15:10, 12 November 2015

⇐ Back to the PMT Characteristics page
⇒ Go to Summer 2012 work page

LogBook on the CODA data acquisition, at CUA

Page (last), [6], [5], [4], [3], [2], [1].

LogBook - Page 06
Run Number Date User PMT High Voltage Experiment Description and observations Image
2759 11/12/2015 Marco XP2262 (SN 34426) -2.300 (NIM) Gain LED (green) gain calibration for NPS light yield. Na22 source is also inside, so may have noise. Rate of ~6.5kHz. T=18oC. SEP: 67.23 (fit range 55-85). PED: 27.66 (fit range 25-35).
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2760 11/12/2015 Marco XP2262 (SN 34426) -2.300 (NIM) Gain Same as 2759, reduce light intensity. SEP: 64.85 (fit range 55-85). PED: 27.65 (fit range 25-35).
Error creating thumbnail: Unable to save thumbnail to destination
2761 11/12/2015 Marco XP2262 (SN 34426) -2.300 (NIM) Gain Same as 2760; source removed from dark box. SEP: 67.95 (fit range 55-85). PED: 27.63 (fit range 25-35).
Error creating thumbnail: Unable to save thumbnail to destination
2762 11/12/2015 Marco XP2262 (SN 34426) -2.300 (NIM) Gain Same as 2761; slightly higher light intensity. SEP: 70.08 (fit range 55-85). PED: 27.72 (fit range 25-35).
Error creating thumbnail: Unable to save thumbnail to destination
2763 11/12/2015 Marco XP2262 (SN 34426) -2.300 (NIM) Gain Light intensity brought to zero (width=0). SEP: (fit range 55-85). PED: (fit range 25-35).
Error creating thumbnail: Unable to save thumbnail to destination
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