Difference between revisions of "Log"

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m (09/16/2015 W Jefferson Lab Test Lab)
m (09/20/2015 Sunday Home)
 
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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.
  
[[https://hallaweb.jlab.org/wiki/images/4/4b/800px-Layout.png]]
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[https://hallaweb.jlab.org/wiki/images/4/4b/800px-Layout.png PMT layout]
  
 
 
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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.
  
[[File:calculation.png]]
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[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 21:58, 4 January 2021

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.

PMT layout

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.

calculation

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.