Special Meeting LV Cable Strategy Summary 9/15/21

PARTICIPANTS: Fernando, Bogdan, Carlos, Emmanuel, Vladimir, Tanja

DISCUSSION LOW VOLTAGE STRATEGY

• Choice of cables

• Size of cables: 22 AWG (thicker cable) instead of 24 AWG?

• worth looking into if there is a solution that offers lower resistivity
• however, need to pay attention to size of connectors that fit on board, etc.
• Is there a AWG available to handle one column?

• Action Items:

• Review calculation and see what cable + connector combination would be possible
• Fernando provide an example of a cable that would work - Orsay team can then optimize

• Option of Voltage stabilizer/regulator

• would have additional power dissipation but provides stabilization

• obtaining negative regulators may be challenging

• if components available then good thing to so (as long as power dissipation not an issue)

• Review of power consumption:

• (optional) stabilizer power consumption ~<20mW (for +- means ~40mW)
• (need) one amplifier dissipates ~120mW
• (need) one divider disspates ~500mW - defines cooling capacity
• total power dissipation increases to ~660mW (originally assumed ~500mW cooling capacity)

• Action item:

• Is cooling capacity sufficient to handle LV? - 660mV instead of 500mW --> need to test

HV DIVIDERS

• Plan final tests next week

• Action Item: Vladimir check setup on Monday

• Final Layout

• Production

NEXT MEETING: WEDNESDAY 22 SEPTEMBER AT 10:00AM ET