Difference between revisions of "Log"
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Using number 9 port on the “silver” box, with bias voltage +1000V. Dark count signal indicates a voltage amplitude around 10mV. Thus all PMTs are working fine. | Using number 9 port on the “silver” box, with bias voltage +1000V. Dark count signal indicates a voltage amplitude around 10mV. Thus all PMTs are working fine. | ||
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With +/-3 degree error bar for incident angle, the minimal width of the mirror (130cm curvature) is (1.62+1.72) = 3.34 inches. Thus my suggest mirror width is 6 inches. | With +/-3 degree error bar for incident angle, the minimal width of the mirror (130cm curvature) is (1.62+1.72) = 3.34 inches. Thus my suggest mirror width is 6 inches. | ||
| − | [ | + | [https://hallaweb.jlab.org/wiki/images/3/37/800px-Calculation.png calculation] |
== 09/22/2015 Tuesday W&M == | == 09/22/2015 Tuesday W&M == | ||
Latest revision as of 20:58, 4 January 2021
Contents
09/16/2015 W Jefferson Lab Test Lab
All PMTs are arranged properly. Using number 9 port on the “silver” box, with bias voltage +1000V. Dark count signal indicates a voltage amplitude around 10mV. Thus all PMTs are working fine.
09/20/2015 Sunday Home
Prototype Cherenkov mirror With +/-3 degree error bar for incident angle, the minimal width of the mirror (130cm curvature) is (1.62+1.72) = 3.34 inches. Thus my suggest mirror width is 6 inches.
09/22/2015 Tuesday W&M
Finalized the design of concave mirror with its framing for prototype Cherenkov detector. Curvature radius: 130cm.
09/23/2015 W Jefferson Lab Test Lab
Opened prototype detector, connected power cables for DAQ and framed the power boxes.
