Test Setup

The test set up (shown in the first figure) consists of:

• A box to hold the module and surrounding infrastructure.The box must be able to keep the module isolated from the surrounding room. We used a drink cooler (the sort of thing you would bring to a picnic), which we modified to allow room for cables, cooling lines, vacuum lines, and a nitrogen line.
• Nitrogen, to regulate the humidity within the box and keep the module dry. You can use some other method to keep the humidity low, but we found nitrogen works quite well (humidity can get as low as 30% in our setup, but keeping it around 40-50% is probably fine).
• A cooler, to regulate the temperature of the module. We use a mixture of glycol and water for the cooling, and keep the module at ~10 degrees C. The cooling lines are run through the testing jig (which is what you place the module on during testing).
• A vacuum, which is also run through the testing jig. This holds the module flat, ensuring good thermal contact with the jig for cooling. This also helps to stop the module from bending, which can happen when it changes temperatures.
• The testing jig, pictured below (TBA). This plate has both cooling lines and vacuum lines. Cooling for keeping the module below a certain temperature, and vacuum lines to keep the module flat and to ensure a good thermal connection between the module and the plate.
• Cables. These will depend on what kind of module you are testing, but you will in general have a data cable, a high voltage cable to provide HV to the silicon sensor, and low voltage cables for the ASICs and buffer card, as well as cables for the temperature and humidity readout.
• Power supply for the buffer card and ASICs, and a HV power supply for the strips.
• The temperature interlock, which automatically cuts the power if the temperature or humidity exceed certain values (you program these values yourself).
• Obviously, a module and its corresponding buffer card
• A test frame, pictured below (TBA). This provides the connections for HV, LV, and temperature readout from the hybrid to the outside world.
• An HSIO or ATLYS card, which interfaces between the module and your computer.

Testing Procedure

1. Open nitrogen lines to flush out box.
2. Turn on vacuum.
3. Turn on cooling system (cooler set to ~10 degrees).
4. Once humidity reaches ~50% and temperature is below ~15 degrees, turn on power.
   1. Turn on HSIO/ATLYS card.
   2. Turn on LVDS buffer card.
   3. Turn on ASICs.
5. If HSIO - run SCTDAQ. If ATLYS card, program ATLYS then run SCTDAQ.
6. If testing an endcap hybrid, run "NewEndcapHybridSetup.cpp" (note: MUST have "New" in the name; EndcapHybridSetup.cpp is the wrong macro!). Note that NewEndcapHybridSetup.cpp must be altered if using ATLYS card (details TBA).
7. Now you are ready to run your tests!

Test System Details

TBA

-- LaurelleMariaVeloce - 2015-12-02