Oxford Instruments Shasta, Руководство пользователя

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3900001 Rev. C
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User Manual
Issue 02 / February 2015 / Shasta User Manual
Shasta High Voltage Power Supply
Shasta Power Supply Overview
The Shasta power supply series is designed to be used as a grounded cathode X-ray tube power driver.
It contains the power supply stages (HV, filament and optional grid) and the control circuitry necessary to
the supply and control of an X-ray tube.
Shasta Models
Model Power Voltage Filament Grid/Bias
9700001 50W Power +50kV Voltage +5V 3.5A Filament N/A
9700002 50W Power +50kV Voltage +5V 3.5A Filament -300V
9700003 60W Power +60kV Voltage +5V 3.5A Filament N/A
9700004 60W Power +60kV Voltage +5V 3.5A Filament -300V
Description
The Shasta unit is supplied from a 24Vdc rail and delivers the following outputs via three separated
power stages:

A high voltage output for the supply of the X-ray tube anode. The high voltage can supply up to
+50kV or +60kV (depending on the model) with a maximum output current of 1mA

A low voltage output for the supply of the X-ray tube filament. The filament current can supply up
to 3.5A. The maximum output voltage is +5V

An optional grid bias output with -300V 0.25mA, the grid bias is automatically increased with the
high voltage. The maximum scaling of the grid bias is adjustable
Interface
The analog interface offers the following functionalities via connectors and potentiometers located on the
front panel:

Input power Interlock

Control of the high voltage via a 0 to 10V analog input or an internal multi turn potentiometer

Control of the beam current via a 0 to 10V analog input or an internal multi turn potentiometer
(The control of the beam current is obtained via the filament loop)

Limitation of the maximum filament current is via an internal multi turn potentiometer (This sets a
limit to the filament loop current demand)

Analog outputs for the monitoring of high voltage and beam current