Difference between revisions of "Mini BCAL Channel Study"
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The pulsar box was a dark light-tight box with a blue LED constantly flashing from the bottom. The SiPM modules are mounted on the top, with a casket and a black cloth to seal off any light leaks into the system, Voltage supplies are given by the BCAL distribution boxes as shown in [[https://halldweb.jlab.org/DocDB/0059/005935/001/EIC%20Mini%20BCAL%20PS%20Setup.pdf Slide 12]]. The pulsar box is shown on the below. | The pulsar box was a dark light-tight box with a blue LED constantly flashing from the bottom. The SiPM modules are mounted on the top, with a casket and a black cloth to seal off any light leaks into the system, Voltage supplies are given by the BCAL distribution boxes as shown in [[https://halldweb.jlab.org/DocDB/0059/005935/001/EIC%20Mini%20BCAL%20PS%20Setup.pdf Slide 12]]. The pulsar box is shown on the below. | ||
− | [[File:miniBCAL-LED-Pulsar-box.jpeg|thumb|400px| | + | [[File:miniBCAL-LED-Pulsar-box.jpeg|thumb|400px|center|LED Pulsar Box setup]] |
Revision as of 17:58, 5 March 2023
The mini BCAL Module tests
On 3rd March 2023, Chris set up a LED pulsar box to verify the working of the SiPM modules that will be used for the mini BCAL EIC test.
- Module-49 and Module-50 used are spares for the BCAL modules for 2011 that were tested during this study.
- Module-50 was tested however, channels 3 and 4 showed very small amplitudes for both Upstream and downstream, probably indicating that the bias voltage set were not right for them.
The setup
The pulsar box was a dark light-tight box with a blue LED constantly flashing from the bottom. The SiPM modules are mounted on the top, with a casket and a black cloth to seal off any light leaks into the system, Voltage supplies are given by the BCAL distribution boxes as shown in [Slide 12]. The pulsar box is shown on the below.
A table summarizing the result of the test is shown below
Upstream Channel | Upstream Signal (Supply 74 V) | Upstream Properties | Downstream Channel | Downstream Signal (Supply 74 V) | Downstream Properties |
---|---|---|---|---|---|
AU0 | a | AD0 | a | ||
AU1 | AD1 | ||||
AU2 | AD2 | ||||
AU3 | AD3 | ||||
AU4 | AD4 | ||||
AU5 | AD5 | ||||
AU6 | AD6 | ||||
AU7 | AD7 | ||||
AU8 | AD8 | ||||
AU9 | AD9 | ||||
AU10 | AD10 | ||||
AU11 | AD11 | ||||
AU12 | AD12 | ||||
AU13 | AD13 | ||||
AU14 | AD14 | ||||
AU15 | AD15 |