Introduction; The Caen Universal Multichannel Power Supply System - Caen A 1732 Technical Information Manual

Document type: Title:
User's Manual (MUT) Mod. A1732-A1832 High Voltage Boards

1. Introduction

1.1

The CAEN Universal Multichannel Power Supply System

The SY 1527 system is the fully equipped, large scale experiment version of a new line
of power supply systems which represent CAEN's latest proposal in the matter of High
Voltage and Low Voltage Power Supplying. This system outlines a completely new
approach to power generation and distribution by allowing to house, in the same
mainframe, a wide range of boards with different functions, such as High/Low Voltage
boards, generic I/O boards (temperature, pressure monitors, etc.) and branch controllers,
where the latter are used to control other remote generators and distributors.
Modularity, flexibility and reliability are the key-points of its design, enabling this module
to meet the requirements of a wide range of experimental conditions. The latter range
from those of LHC experiments, in which the model's features find prior application, to
those of other less challenging, but still demanding, High Energy Physics experiments.
The mainframe is housed in a 19"-wide, 8U-high euro-mechanics rack and hosts four
main sections:
- the Board Section, with 16 slots to house boards, distributors and branch controllers;
- the Fan Tray Section, housing 6 fans disposed on two rows;
- the Power Supply Section, which consists of the primary power supply and up to 3
power supply units;
- the CPU and Front Panel Section which includes all interface facilities.
The User interface features the usual friendliness of the previous CAEN systems which
now also includes a 7.7" colour LCD. A wide choice of interfaces provides full
communication compatibility with the previous systems and the possibility of controlling
heterogeneous external devices.
Modularity has been one of the leading criteria in the design and development of the
system: both the Power Supply Section and the Board Section are completely modular.
The Power Supply Section allows different configurations with up to 3 power supply units
per mainframe (up to 2250 W), while the Board Section can house up to 16 boards able
to fulfil different functions. A new line of boards and distributors, analogous with those
available for the SY 527 system, and a set of branch controllers has been specially
developed for this new system. The minimum system configuration consists of the
primary power supply, one Power Supply Unit and one board.
The concept of modularity has been extended up to the possibility of arranging 'clusters'
constituted by one 'intelligent' SY 1527 system able to drive other 'non-intelligent'
systems, i.e. systems without CPU (to be implemented). The connections among the
systems constituting the cluster are realised through a new CAEN interface, the Local
Net.
The extreme flexibility of the system, which allows to house indifferently, inside the same
mainframe, boards with different functions, is further enhanced by the possibility of
developing ad-hoc boards and even complete custom peripheral systems. The latter,
actually, can be designed specifically for on-detector installation. All the custom
NPO:
00101/00:17XXx.MUTx/05
Filename:
A1732B-A1832B_REV5.DOC
Revision date: Revision:
02/05/2005 5
Number of pages:
20
Page:
3