Sabino Meola

Sabino Meola

Status of the present power system

Shipments from CAEN

Upgrade schedule and milestones

Sept 01, 2020 2RPC Workshop

Sabino Meola

HV system is located in the USC, not exposed to radiationand easily accessible for maintenance. It provides theneeded voltage of around 10 kV to the RPC chambers.

A3512N boards produced by CAEN, 12 kV and 1 mA powersupply boards.

In total 136 HV boards are used to operate the present RPCsystem.

Sept 01, 2020 3RPC Workshop

Sabino Meola

LV boards are located in the Underground experimentalCavern (UXC) on the balconies and provide the low voltageto the front end electronics.

A3009B CAEN boards providing 8 V and 9 A to the front-end electronics and on A3016 (8 V and 16 A) providing thevoltage to the link system.

In total 108 A3009 and 72 A3016 LV boards are used in thepresent system.

Sept 01, 2020 4RPC Workshop

Sabino Meola

Many of the electronic components inside CAEN HV and LVA3512N and A3009 could be obsolete -> new boards of thesame type

◦ backward compatible with the present equipment

◦ developed to operate in a magnetic field and in anenvironment with moderate radiation levels

Sept 01, 2020 5RPC Workshop

Sabino Meola

A1676A HV Easy branch controller and Easy-Crate◦ delivered in 2019, by mistake to the GEM lab and then transferred

to RPC 904 lab

A3009 LV board◦ delivered to RPC lab on the end of February 2020

EASY A3512 HV board◦ initially expected for delivery in May, arrived on 24 of July 2020

A1526 HV board for tests◦ initially expected for delivery in May, arrived on 27 of July 2020◦ (it's not a purchase, but a request to test the card)

Sept 01, 2020 6RPC Workshop

Sabino Meola

A3009 12 Channel 8 V / 9 A / 45 W Power Supply Board◦ https://www.caen.it/products/a3009/

A3512 6 Channel 12 kV / 1 mA Power Supply Board◦ https://www.caen.it/products/a3512/

A1526N 6 Channel 15 kV (not an order, only in vision)◦ https://www.caen.it/products/a1526/

Sept 01, 2020 7RPC Workshop

Sabino Meola

A1676A EASY Branch Controller

◦ https://www.caen.it/products/a1676a/

EASY3000S Front Access Crate for EASY3000 System for Hostile Area

◦ https://www.caen.it/products/easy3000s/

Sept 01, 2020 8RPC Workshop

Sabino Meola

A3009 LV and A3512 HV power supplies are identical to the current ones◦ CAEN informed us they performed a ‘producibility test’

All modules in the catalog and ready for an order

Sept 01, 2020 9RPC Workshop

Sabino Meola

Induced noise◦ Measurements with cosmics◦ We could start with the chamber used for 2D-measurements, with new

INFN electronics◦ Tests using the max cable length we have in P5 (33 m)

LV◦ Wrong connectors: Caen shipped an A3009, we use A3009B

Use adaptors or change the 3009 for a 3009B

◦ A3009 is a standard module, determine whether an extension of the output voltage interval is needed (2-8V to 2-10V)

HV◦ Easy system or a standard one: we have to understand if we need to

install two Easy crates or two mainframes◦ Why A1526 is claimed to be low noise and low ripple and do we need

it?◦ RC or LC filters, if we need it maybe CAEN can add it directly to the

power supply

Sept 01, 2020 10RPC Workshop

Sabino Meola

Power System installation foreseen during YETS of 2022/2023 (with the possibility of slipping to YETS 2023/2024)

1st quarter 2021 test HV power supplies

LV need final FEB

◦ Mid 2021, as soon as the demonstrator will be available (should be by July)

Mid 2022 HV and LV mass order

Sept 01, 2020 11RPC Workshop

Sabino Meola

Test station at 904 lab set up

All modules from CAEN at 904

Power system tests schedule defined

Sept 01, 2020 12RPC Workshop

Sabino Meola Sept 01, 2020 13RPC Workshop

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Noise measurements to assess the induced noise

We could start with the chamber used for 2D-measurements

Sept 01, 2020 14RPC Workshop