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Darkbox Fiber Testing Setup (view source)
Revision as of 15:59, 5 October 2015
, 15:59, 5 October 2015→Controlling the electronics
=== Power supply cables ===
=== Power supply cables ===
*Banana plug cables (number?)
*4 - banana plug cables
*4 - double banana plug connectors with additional banana plug openings (see pictures)
*4 - double banana plug connectors with additional banana plug openings
*Backplane power cord
*Backplane power cord
**The end that has a rectangular, plastic block connects to the backplane. There is only one way it will fit
**The end that has a rectangular, plastic block connects to the backplane. There is only one way it will fit
*1 control board
*1 control board
*2 preamps
*2 preamps
*2 ethernet cables
*1 ethernet cable for the control board
*network hub for the ethernet cables
*network hub for the ethernet cables
*4 - #6-32 bolts and nuts
*4 - #6-32 bolts and nuts
*adc with at least 12 channels
*adc with at least 12 channels
*discriminator
*discriminator
*trigger
*trigger interface
*CPU (for CODA) with proper drivers
*CPU (for CODA) with proper drivers
*1 ethernet cable
== Power Supply Setup ==
== Power Supply Setup ==
==== 3 Channel Supply ====
==== 3 Channel Supply ====
*There should be a wire connecting the COM (GND) and ground (GND) terminals. Make sure that the terminal is tightened down sufficiently to hold the wire in place.
*There should be a wire connecting the COM (GND) and ground (GND) terminals. Make sure that the terminal is tightened down sufficiently to hold the wire in place.
*Double-plug adapters with additional connection holes have been used previously to allow for multiple connections
*Double-plug adapters with additional connection holes have been used previously to allow for multiple connections. These double-plug adapters look like two parallel male banana contacts sticking out of a single housing, usually black.
**Between the +6 and COM terminals.
**Between the +6 and COM terminals.
**Between the -20V and ground terminals
**Between the -20V and ground terminals
**One side connected to the +20V terminal to allow for 2 connections. The other end of the double-plug was not used.
**One side connected to the +20V terminal to allow for 2 connections. The other end of the double-plug was not used.
==== 60V Supply ====
==== 60V Supply ====
*Do not push the preamps all the way against the eurocard. Use the chimney bracket brace bar to push the preamp onto the eurocard. Simply attach the bar and tighten the bolts. The preamp will be properly located with respect to the chimney slots.
*Do not push the preamps all the way against the eurocard. Use the chimney bracket brace bar to push the preamp onto the eurocard. Simply attach the bar and tighten the bolts. The preamp will be properly located with respect to the chimney slots.
=== Controlling the electronics ===
See [https://docs.google.com/document/d/1h_cdGmiCDNpebsxfTyXRY9JQlQd3d6N6BcufDAcAnWU/edit this Google doc] for information pertaining to the electronics software and proper usage.
== JLab Crate Setup ==
== JLab Crate Setup ==
Note: The following process is for a VME crate using the fADC250 and f1TDC.
=== Install the crate ===
=== Install the crate ===
*Place the crate in the rack located in the clean room
*Place the crate in the rack located in the clean room
**This may be different since this is a different crate
**This may be different since this is a different crate
*The CPU should have an ethernet cable connecting it to the hub.
*The CPU should have an ethernet cable connecting it to the hub.
=== Setting up the crate for testing ===
*The crate will need to be connected to our network (ask Richard)
*The gate will need to be configured.
*CODA will require configuration files in order to run properly
== Testing the setup ==
=== Testing the dark box ===
*Use a camera with a 60 second exposure to test the light seal of the dark box
*Verify that signals are coming from the electronics by using an oscilloscope. High gain will allow you to see the dark rate.
*Similarly, verify that the pulser is providing signals by reading both outputs on the scope.
=== Testing the crate ===
*Turn on the pulser and the electronics
*By hand perform a run using the CODA interface
*Error messages will appear in the CODA interface
== Data Taking ==
=== Setup and Procedure ===
*The former procedure on setting up the fiber bundles and using the dark box can be found [http://zeus.phys.uconn.edu/wiki/index.php/Fiber_Testing_Procedure here].
*<b>Never</b> open the dark box when the electronics are turned on!
*Always remove the preamplifier board when installing fibers to prevent damage to the SiPMs.
*Make sure the 60 V power supply is <u>turned on first</u> and <u>turned off last</u>.
=== Data Collection/Monitoring ===
*This [http://gryphn.phys.uconn.edu/halld/tagger/fp-microscope/fiberQA-2-2014/?newrun link] will request a new run. A new link will likely be used for the new testing.
*Check the status of a run [http://gryphn.phys.uconn.edu/halld/tagger/fp-microscope/fiberQA-2-2014/?status here]. This will be updated for the new runs.
*Check the cron log [http://gryphn.phys.uconn.edu/halld/tagger/fp-microscope/fiberQA-2-2014/fiberQA_cron.log here]. Once again, this will be changed for the new runs.
=== Useful Links ===
*The original [https://docs.google.com/a/uconn.edu/spreadsheets/d/1T4NUSQO_keT0QckCx4rWlbMW7Yot4vb-Z1eqrM1l94k/edit#gid=542381648 Fiber QA Google Doc] - credit to Liana Hotte
*Check the histograms of the last successful run [http://gryphn.phys.uconn.edu/halld/tagger/fp-microscope/fiberQA-2-2014/ here] - this will need to be updated for the new tests
*Check the results of a specific run by modifying the [http://gryphn.phys.uconn.edu/halld/tagger/fp-microscope/fiberQA-2-2014/?run=615 URL] by adding /?run=### to the end of the URL