Minutes of the forward endcap EMC eZuce SRN meeting, 6th of May 2019, 14:00-14:30

Presence:

• Basel: -
• Bochum: Fritz-Herbert, Malte, Matthias, Miriam, Tobias H., Tobias T.
• Bonn: Christoph
• Groningen: -
• Stockholm: -
• Uppsala: Pawel
• Giessen: -
• GSI: -

APD-Submodule Material Bonn:

• About 1800 signal cables produced. To be shipped to Bochum. Bonn used an upgraded machine, which will be sent back. They will get a new one in one month.
• Deliveries from Bonn arrived in Bochum.

Voltage range HV regulation

• Each APD can be regulated separately. Currently with a voltage range of 30 V and steps of 0.1 V. It was agreed to change this to a maximum range of 15 V and 0.05 V steps.
• The measurement has currently a resolution of 100 mV (due to thermal dependicies of the resistors.).

Status SADC backplane and power supply

• Backplane PCB in production (soldering). Expected this week.
• Power supply expected soon (1pc to test).
• Power supply evaluation model did not survive irradiation test. Waiting to cool down for more checks. It might be due to the high intensity (10¹¹ p/100 s). Next irradiation is planned for June 28 with a lower intensity.
• Status of the crate is unknown (check with Myroslav).

FEE and DAQ workshop

• Starts Monday, May 27th at 2:00 pm and end on Wednesday, May 29th at 12:30.
• https://indico.gsi.de/event/8891/overview