Lake Shore 625, Руководство пользователя

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Lake Shore Model 625 Superconducting MPS User’s Manual
Table of Contents i
TABLE OF CONTENTS
Chapter/Paragraph Title Page
1 INTRODUCTION .................................................................................................................................................... 1-1
1.0 GENERAL ................................................................................................................................................ 1-1
1.1 DESCRIPTION ......................................................................................................................................... 1-1
1.2 SPECIFICATIONS .................................................................................................................................... 1-4
1.3 SAFETY SUMMARY ................................................................................................................................ 1-7
1.4 SAFETY SYMBOLS ................................................................................................................................. 1-7
2 MAGNET SYSTEM DESIGN .................................................................................................................................. 2-1
2.0 GENERAL ................................................................................................................................................ 2-1
2.1 SUPERCONDUCTING MATERIALS ........................................................................................................ 2-1
2.2 SUPERCONDUCTING MAGNETS .......................................................................................................... 2-1
2.2.1 Superconducting Magnet Construction .............................................................................................. 2-1
2.2.2 Magnet Inductance ............................................................................................................................ 2-2
2.2.3 Maximum Ramp Rate ........................................................................................................................ 2-3
2.2.4 Maximum Magnet Current ................................................................................................................. 2-3
2.2.5 Magnet Quench Protection Diodes .................................................................................................... 2-3
2.3 PERSISTENT SWITCHES ....................................................................................................................... 2-3
2.4 MAGNET CURRENT LEADS ................................................................................................................... 2-4
2.5 HELIUM DEWARS ................................................................................................................................... 2-4
2.6 MAGNET QUENCH .................................................................................................................................. 2-5
3 INSTALLATION ...................................................................................................................................................... 3-1
3.0 GENERAL ................................................................................................................................................ 3-1
3.1 INSPECTION AND UNPACKING ............................................................................................................. 3-1
3.2 REAR PANEL DEFINITION ...................................................................................................................... 3-2
3.3 LINE INPUT ASSEMBLY .......................................................................................................................... 3-3
3.3.1 Line Voltage....................................................................................................................................... 3-3
3.3.2 Line Fuse and Fuse Holder ............................................................................................................... 3-3
3.3.3 Power Cord........................................................................................................................................ 3-3
3.3.4 Power Switch ..................................................................................................................................... 3-4
3.4 MAGNET CABLE CONNECTIONS .......................................................................................................... 3-4
3.5 ANALOG INPUT/OUTPUT CONNECTIONS ............................................................................................ 3-4
3.5.1 External Current Programming .......................................................................................................... 3-4
3.5.2 Remote Voltage Sense ...................................................................................................................... 3-5
3.5.3 Output Current and Voltage Monitors ................................................................................................ 3-5
3.6 DIGITAL INPUT/OUTPUT CONNECTIONS ............................................................................................. 3-5
3.6.1 Fault Output ....................................................................................................................................... 3-5
3.6.2 Remote Inhibit ................................................................................................................................... 3-6
3.6.3 Trigger In ........................................................................................................................................... 3-6
3.7 PERSISTENT SWITCH HEATER OUTPUT ............................................................................................. 3-6
3.7.1 Heater Output Connection ................................................................................................................. 3-6
3.7.2 Heater Output Cabling ....................................................................................................................... 3-6
3.8 INSTRUMENT GROUNDING AND ISOLATION ...................................................................................... 3-7
3.9 CONNECTING MULTIPLE UNITS IN PARALLEL .................................................................................... 3-7
3.10 RACK MOUNTING ................................................................................................................................... 3-9
4 OPERATION ........................................................................................................................................................... 4-1
4.0 GENERAL ................................................................................................................................................ 4-1
4.1 TURNING POWER ON ............................................................................................................................ 4-1
4.2 DISPLAY DEFINITION ............................................................................................................................. 4-1
4.2.1 Output Current Display ...................................................................................................................... 4-1
4.2.2 Magnet Field Display ......................................................................................................................... 4-2
4.2.3 Persistent Switch Heater Display ....................................................................................................... 4-2
4.2.4 LED Annunciators .............................................................................................................................. 4-2