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EASY ( Embedded Assembly SYstem ) is the new CAEN high/low voltage power supply to be used every time the magnetic field and radiation become a problem.
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> Why EASY?
During the last decade, CAEN has been involved in developing different solutions in order to satisfy the requirements coming from main LHC experiments where the electronic equipment of the experiment is dealing with high dose radiation and strong magnetic field.
In order to provide safe and reliable operations in measurements in these hostile areas, CAEN started tests with rad-tolerance components and magnetic field resistant solution, patenting the new technology that is now used in the new line of catalogue products for “hostile” area.
In addition even if designed for harsh environment the EASY modules can work also in normal condition with excellent performance.
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> System Philosophy
 In the new philosophy, the power supply is located directly in the hostile area; here the EASY modules provide a wide variety of output voltages to satisfy the requirements of most detectors and front end electronics.
The control of the EASY power supply system can be done remotely using a Branch Controller (model A1676A) plugged in a SY1527 or SY2527 mainframe located in the control room.
Trough the mainframe an immediate and “automatic” interfacing with the DCS or the custom control software is achieved using the provided and full reliable OPC server software.
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> Flexibility and Compatibility
Each branch control module can handle up to 6 EASY crates. Since the A1676A is a one unit wide board, each SY1527 power system can house up to 16 branch controller boards, while each SY2527 can house up to 6 branch controller boards, enabling the monitoring up to 96 EASY systems. The module can work even side by side with standard HV and/or LV board. An unique interface and a cost effective set-up for all the experiment’s power requirements!
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> Architecture
 The EASY3000 (for boards up to 40cm
long, A3XXX Family) can house up to 10 boards depending on the boards’
width, while the EASY4000 (for boards
up to 55cm long, A4XXX Family) can house up to 9 boards. As illustrated
in Figure, the branch controller is the interface between the supply
unit (SY1527 or SY2527) and the remote boards in the EASY
crate. The branch controller role is to configure the EASY
channels as they belong to the supply unit slot in which the branch
controller is located. In this way all the channels of the EASY
boards, will be considered as channels of the branch control board,
increasing hugely the number of channels the system can handle.
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> Accessories
The EASY Crate can be used with an air and/or water intercooler and
its standard width fit the rack mounting. Moreover, an optional fan
tray (A34FU - EASY3000/4000 Fan Unit)
can be used for the stand-alone functioning of the EASY crate when
no magnetic field is present.
Both EASY3000 and EASY4000
need to be powered with external 48VDC.
It has been foreseen to use two different 48V power sources, the first
to deliver the needed supply and the other to reach continuity in
the remote system control. This second supply will be more protected
using a back-up power solution, guaranteeing to the remote system
to be controlled even if the main 48V power source is switched off.
Moreover a 48V back-up battery will preserve the system from a blackout.
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