578
edits
Changes
Jump to navigation
Jump to search
Line 1:
Line 1: + + + + − Troubleshooting of the QA Procedure required multiple runs of the fibers. The results of those runs were motivations for changes to the testing procedure including: modification to the pulser circuit, modification to the pulser power source, standardized methods of placing the fibers into the chimneys, and consideration of temperature in analyzing photon yield. The results of these preliminary tests can be found below: − *[https://docs.google.com/a/uconn.edu/spreadsheets/d/11dipDk7WZ5PHp3xFHyUtVzUyJhcY9ewnyDf5FEbtbig/edit?usp=drive_web Ann Marie's Troubleshooting Tests] before the pulser circuit was modified − *[https://docs.google.com/a/uconn.edu/spreadsheets/d/1SNiHFm5fo_8yHHBrvuciXn_IRJ8aHT6QC_DbKERF3K0/edit#gid=101819727 Liana's Troubleshooting Tests] after the pulser circuit was modified − *[https://docs.google.com/a/uconn.edu/document/d/1mGxw-1p69iodf4hJz1tTTfBxgvfdGpDbZynqvXzYCLc/edit# Liana's Work Journal] and [http://zeus.phys.uconn.edu/wiki/index.php/LH_Summer_2014 Liana's Summer Wiki Page] accompany her Troubleshooting tests which describes more in-depth the thought process and steps behind each run.
no edit summary
'''This page is currently under construction'''
It is important to determine light yield of each fiber before shipment to Jefferson Lab. In order to do this, light yield tests will be performed on each fiber in our dark box using a red laser diode on a pulsing circuit. The setup of the fibers is very important, as any offset fibers could give an inaccurate result. It is also important that procedure is followed to prevent damage to electronics.
It is important to determine light yield of each fiber before shipment to Jefferson Lab. In order to do this, light yield tests will be performed on each fiber in our dark box using a red laser diode on a pulsing circuit. The setup of the fibers is very important, as any offset fibers could give an inaccurate result. It is also important that procedure is followed to prevent damage to electronics.
'''If the electronics are powered and the dark box is open, the siliconphotomultipliers WILL be damaged''', so it is very important to make sure electronics are off before the dark box is opened.
'''If the electronics are powered and the dark box is open, the siliconphotomultipliers WILL be damaged''', so it is very important to make sure electronics are off before the dark box is opened.
[Fiber QA Troubleshooting]
Fibers will be issued a new name after QA consisting of a Roman Numeral for the bundle which they are from, followed by a number in parentheses which designates it's position within the bundle. The diagram below shows how the fibers are positioned as viewed from the light guide/SiPM side of the fibers. These are also how the histos are going to appear in the analyzer.
Fibers will be issued a new name after QA consisting of a Roman Numeral for the bundle which they are from, followed by a number in parentheses which designates it's position within the bundle. The diagram below shows how the fibers are positioned as viewed from the light guide/SiPM side of the fibers. These are also how the histos are going to appear in the analyzer.