Spectrum Techniques ICS-PCI Manuel utilisateur

ICS-PCI

Integrated Computer Spectrometer

PCI Card Version for Windows

User’s Manual

Spectrum Techniques, Inc.

106 Union Valley Road

Oak Ridge, TN 37830

Tel. (865) 482-9937

Fax (865) 483-0473

e-mail spe[email protected]

web http://www.spectrumtechniques.com

February, 2005

Table of Contents

CONTENTS.............................................................................................................................................................................4

Introduction..............................................................................................................................................................................5

Installation ...............................................................................................................................................................................6

Software Installation ............................................................................................................................................................6

Card Installation...................................................................................................................................................................6

Connecting Detector............................................................................................................................................................7

Analysis Modes .......................................................................................................................................................................8

Pulse Height Analysis (PHA Pre Amp In)............................................................................................................................8

Pulse Height Analysis (PHA) - Amp In ................................................................................................................................8

Pulse Height Analysis (PHA) - Direct In ..............................................................................................................................9

Multichannel Scaling (MCS Internal) ...................................................................................................................................9

Multichannel Scaling (MCS) - External................................................................................................................................9

Start Up .................................................................................................................................................................................10

Starting the Application......................................................................................................................................................10

High Voltage and Amplifier Gain .......................................................................................................................................12

ADC Conversion Gain Adjustment .................................................................................................................................... 13

Lower (LLD) and Upper (ULD) Level Discriminator Adjustments......................................................................................13

Operation...............................................................................................................................................................................15

Preset Time Adjustments ..................................................................................................................................................15

Integrals and Preset Counts..............................................................................................................................................15

Start ...................................................................................................................................................................................16

Stop ...................................................................................................................................................................................17

Erase .................................................................................................................................................................................17

Regions of Interest (ROI)...................................................................................................................................................17

Functions...............................................................................................................................................................................19

Energy Calibration .............................................................................................................................................................19

Temperature Compensation..............................................................................................................................................20

IsoMatch ............................................................................................................................................................................21

Background Subtraction ....................................................................................................................................................22

Smoothing..........................................................................................................................................................................22

Overlay ..............................................................................................................................................................................22

Auto Calibration ................................................................................................................................................................. 23

Menu Bar...............................................................................................................................................................................24

File .....................................................................................................................................................................................24

Edit.....................................................................................................................................................................................25

Mode..................................................................................................................................................................................26

Calculate............................................................................................................................................................................27

Display...............................................................................................................................................................................27

Settings..............................................................................................................................................................................28

Window..............................................................................................................................................................................33

Help ...................................................................................................................................................................................34

Tool Bar.................................................................................................................................................................................35

Open..................................................................................................................................................................................35

Save...................................................................................................................................................................................35

Print ...................................................................................................................................................................................35

Copy ..................................................................................................................................................................................35

Amp/HV .............................................................................................................................................................................36

Preset ................................................................................................................................................................................36

Spectrum ...........................................................................................................................................................................36

Peak Report.......................................................................................................................................................................36

Data Report .......................................................................................................................................................................37

Contents ............................................................................................................................................................................37

Display Window.....................................................................................................................................................................38

Start Button........................................................................................................................................................................38

Stop Button........................................................................................................................................................................38

Erase Button......................................................................................................................................................................38

Zoom Buttons ....................................................................................................................................................................38

Dead Time ......................................................................................................................................................................... 39

High Voltage ......................................................................................................................................................................39

Live and Real Time............................................................................................................................................................39

Calibration Status ..............................................................................................................................................................39

Temperature ...................................................................................................................................................................... 39

Technical Reference .............................................................................................................................................................40

Specifications ........................................................................................................................................................................41

Hardware ...........................................................................................................................................................................41

Software.............................................................................................................................................................................42

Warranty and Repair .............................................................................................................................................................43

CONTENTS

This version of ICS-PCI software program is written in C++ language. It is designed for Microsoft Windows

98 or higher.

Most functions may be accessed by more than one method. All the functions can be accessed from the Pull Down Menu,

some from the Tool Bar Buttons, or by the mouse. If the function has a Tool Bar Button, its symbol will be shown on the

left hand side of the description.

Introduction

Installation

Analysis Modes

Start Up

Operation

Functions

Menu Bar

Tool Bar

Display Window

Technical Reference

Specifications

Warranty and Repair

Spectrum Techniques, Inc.

106 Union Valley Road

Oak Ridge, TN 37830

Tel. (865) 482-9937

Fax (865) 483-0473

e-mail spectech@esper.com

web http://www.spectrumtechniques.com

Introduction

The ICS-PCI is designed for spectroscopy applications, the Integrated Computer Spectrometer offers complete support

for standard scintillation detectors together with multichannel scaling for decay and time related studies.

Constructed on a single PC compatible plug-in card, the multichannel analyzer contains many advanced features

including computer controlled amplifier and high voltage for PM tubes, upper and lower level discriminators, on-card data

memory, and a comprehensive software package for use under Windows.

The ICS-PCI requires only a single PCI card slot and is designed for installation in most types of IBM compatible

computers with a minimum of 512K of memory and EGA or VGA graphics. For stability and low noise operation, critical

power is regenerated on the card from the computer power using high efficiency converters. An on-board microprocessor

acts as the master controller and data storage device, as well as the communication link directly to the PC bus.

The integrated amplifier and high voltage are fully compatible with most standard scintillation detectors eliminating the

need for special tube bases and external modules. For ease of setup and calibration, coarse gain, fine gain, high voltage,

and lower and upper level discriminator settings are controlled directly from the PC. For operation with other types of

detector systems such as alpha spectrometers or single photon counting, a selector is provided to bypass the scintillation

amplifier and allow direct access to the ADC.

A 1024 to 4096 channel ADC, depending on the card model, with derandomizing buffer offers excellent data throughput at

high counting rates with minimal dead-time losses. Conversion gain may be changed from 4096, 2048, 1024, to 512, or

256 channels via the software. Data from the ADC is stored directly in on-board memory for autonomy and high speed

operation, freeing the host PC for other tasks.

Installation

Before installing a ICS-PCI Card for the first time, the software should be installed.

Your ICS-PCI card has been factory configured to operate internally in most IBM ® compatible PC's. System

requirements; 486 or Pentium processor, 8 meg RAM, 640 x 480 VGA or SVGA graphics, Microsoft Windows® version 98

or higher, compatible mouse, and an available PCI slot. The software requires 3.0 meg available disk space. If problems

occur and the ICS-PCI card does not respond correctly to the software commands, refer to the Technical Reference

section of this help file. If problem persists, contact the factory.

The ICS-PCI software is defaulted to enable the internal amplifier on the card. This configuration requires the use of a

simple high voltage divider type photomultiplier tube base. The signal (anode) from the base may be connected directly to

the ICS-PCI bottom Input (BNC) connector and the HV (high voltage) connected directly to the top HV (MHV) connector.

The BNC and MHV connectors have a similar appearance, exercise care when making these connections.

Software Installation

Place ICS-PCI software disk into the appropriate disk drive on the computer that will be using the ICS-PCI card.

Using the Windows Explorer, locate the drive and folder containing the ICS-PCI Software. Launch the Setup program by

double-clicking the Setup program icon. Continue to follow the instructions on the screen. In most cases, the default

responses will be adequate.

Card Installation

The intended computer for use of the ICS-PCI card must have at least one available PCI slot.

Remove the case cover and install the ICS-PCI circuit card into the PCI bus of the computer.

Ensure that the card is seated firmly into the slot. Secure the card to the chassis of the computer with screw.

After the card has been installed, connect the detector signal to the card BNC connection and the high voltage

MHV to the detector HV connection. If the optional temperature sensor has been purchased, connect it to the

T/COMP connector.

WARNING - DO NOT connect a telephone to the T/COMP connection. It is not compatible with modem or network

devices. Connection of unsupported devices to any of the connections may damage the ICS-PCI card or the external

device and could result in a voided warranty.

Connecting Detector

The ICS-PCI software is defaulted to enable the internal amplifier on the card. This configuration requires the use of a

simple high voltage divider type photomultiplier tube base. The signal (anode) from the base may be connected directly to

the ICS-PCI bottom Input (BNC) connector and the HV (high voltage) connected directly to the top HV (MHV) connector.

An optional temperature sensor can be connected to the T/COMP connector on the ICS-PCI.

The BNC and MHV connectors have a similar appearance, exercise care when making these connections.

WARNING - DO NOT connect a telephone to the T/COMP connection. It is not compatible with modem or network

devices.

Connection of unsupported devices to any of the connections may damage the ICS-PCI card or the external device and

could result in a voided warranty.

Analysis Modes

Pulse Height Analysis (PHA Pre Amp In)

PHA Amp In

PHA Direct In

Multichannel Scaling (MCS Internal)

MCS External

Pulse Height Analysis (PHA Pre Amp In)

Pulse Height Analysis - The normal operating mode for collecting sample emission spectra.

The incoming signal is routed through the card's internal Pre-Amplifier and Amplifier stages.

The amplitude of each detector pulse is then measured by the ADC and is stored as an amplitude (energy) spectrum.

Pulse Height Analysis (PHA) - Amp In

PHA Amp In - Similar to the 'PHA PreAmp In' operating mode except that the incoming signal bypasses the card's

internal Pre-Amplifier.

The amplitude of each detector pulse is measured by the ADC and stored as an amplitude (energy) spectrum.

Pulse Height Analysis (PHA) - Direct In

PHA Direct In - Similar to the 'PHA PreAmp In' operating mode except that the incoming signal bypasses both the

card's internal Pre-Amplifier and Amplifier stages.

The amplitude of each detector pulse is measured by the ADC and stored as an amplitude (energy) spectrum.

Multichannel Scaling (MCS Internal)

Multichannel Scaling - This mode is used for measuring time related phenomena such as half-life decay or single photon

counting. Incoming events are counted for specific predetermined times (dwell time) and stored in sequential memory

locations. The card is factory set with the internal preamplifier/amplifier enabled for counting events directly from a NaI(Tl)

detector. In the 'MCS Internal' mode, the signal is routed through the card's amplifiers.

Multichannel Scaling (MCS) - External

MCS External - This mode is used for measuring time related phenomena such as half-life decay or single photon

counting. Incoming events are counted for specific predetermined times (dwell time) and stored in sequential memory

locations. In the 'MCS External' mode, the internal preamplifier and amplifier is bypassed and the signal is routed directly

to the counter.

Start Up

Starting the Application

Instrument Selection

To run the ICS-PCI software, select from the Start Menu or double-click the icon for the application. If two or more

supported cards are installed and recognized, a selection window will be displayed showing details of all supported cards.

Using the mouse, select and highlight the desired card from the instruments not 'In Use'. Click the OK button to accept.

If only one card is available, that card will be automatically selected for you and the main window will be opened .

If no card is detected or none are available (already in use by another instance of ICS-PCI software already running), a

warning will be displayed advising that only 'File Mode' activity will be functional. Choosing CANCEL in the selection

window will result in running in File Mode.

The application may be started for a specific serial number card by using a shortcut icon created using Windows standard

methods. A quick way to create a shortcut is to copy the existing standard icon created during software installation and

edit it to suit your needs.

To directly start the software and connect to a specific card, you may add a command line switch -s followed by the

known serial number of the desired card. By this means, you may have multiple icons on the windows desktop that each

open and control a dedicated device.

The example properties window below demonstrates the entries to be made. If the software is placed in different

directories, the path must be appropriately entered.

If the program is started by way of a shortcut or command line and the specified serial number is not available (either

already in use or no longer installed in the computer) you will be notified and taken into File Mode operation.

Shortcut

Any shortcuts created manually will not be automatically removed when uninstalling the software.

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