578
edits
Changes
Jump to navigation
Jump to search
Line 3:
Line 3: + + + + + + + + + + + + + + + + + + + + + + + + + + +
→Previous Procedures
*[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/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.
*[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.
==Fiber Class==
We wanted to see if there was a correlation between painting/gluing and the photon yield of the fibers. We decided to place each fiber into a separate fiber class depending on the current state of the fiber. The fiber classes are as follows:
*SG - untouched fibers from Saint Gobain
*S - straightened but not fused
*F - straightened and fused
*B - bent and never painted
*P - painted
*.5P - half painted
*U - paint removed (unpainted)
==Previous Procedures==
*Metal clamps and wires were previously used to secure the bundles of 15 to the fibers' popsicle sticks. We then graduated to using only one metal clamp over two 15-fiber bundles and two kapton strips per popsicle stick.
[[File:LH-FiberTesting-PopStickClamp.jpg|thumb|center|upright|The popsicle stick with clamp and wires to hold the fibers in place.]]
*We are currently working on making the paper spacings procedure easier.
[[File:LH-FiberTesting-PaperSpacers.jpg|thumb|center|upright|A view of 15 flush fibers separated with paper spacers between each row and column.]]
*The following photos were taken before the pulser circuit was fixed (added around June 16th) and before the pulser ran on a power supply. The pulser was modified to run on a power supply on July 3rd, 2014. You can see the results of this change on the "Scramble on Power Supply" page of the [https://docs.google.com/a/uconn.edu/spreadsheets/d/1SNiHFm5fo_8yHHBrvuciXn_IRJ8aHT6QC_DbKERF3K0/edit#gid=101819727 Fiber QA Troubleshooting Google Doc]
{|style="margin: 0 auto;"
| [[File:LH-FiberTesting-Pulsar1.jpg|thumb|center|upright|Image of the fibers, mirror and pulsar from the main opening of the dark box.]]
| [[File:LH-FiberTesting-Pulsar2.jpg|thumb|center|upright|Image of the fibers, mirror and pulsar from along the fibers.]]
|[[File:LH-FiberTesting-InsideDarkBox.jpg|thumb|center|upright|View of the fibers from the main opening of the dark box. Black plastic separates the scintillating fiber end and pulsar from the chimneys and SciPMs.]]
|}
* The initial procedure for paper spacing was to place paper under the kapton strips, but we later found that it caused too much of a gap between the scintillators. The paper spacers were then only placed at the beginning of the S-bend.
[[File:LH-FiberQA_SciFiPaper.jpg|thumb|center|A view of the scintillating fibers directly after paper spacers have been placed and the fibers are flush.]]