Model SMM 770 Scanning Magnetic Microscope System
TRISTAN TECHNOLOGIES --Page 6
5.
SERVICE AND MAINTENANCE
51
5.1
I
NSPECTION AND
C
LEANING
51
5.2
C
RYOGENIC
D
EWAR
M
AINTENANCE
51
5.3
G
ANTRY
M
AINTENANCE
53
5.4
V
IBRATION
I
SOLATION EQUIPMENT
53
6.
OPTIONAL EQUIPMENT
53
6.1
O
PTION
77P P
NEUMATIC
V
IBRATION
I
SOLATION
53
6.2
O
PTION
77V A
CTIVE
V
IBRATION
C
ANCELLATION
53
6.3
O
PTION
77T T
ILT
T
IP
F
RAME
54
6.4
O
PTION
77B F
IXED
F
IELD
C
APABILITY
55
6.5
O
PTION
77HR 12.5 M
ICRON
S
TEP
C
APACITY
59
6.6
O
PTION
MS-770 T
WO
L
AYER
M
U
M
ETAL
M
AGNETIC
S
HIELD
59
7.
APPENDICES 62
7.1
T
HERMOMETRY AND
C
OOLDOWN
62
7.2
C
ALCULATING
B-
FIELDS
63
7.3
W
IRING AND
H
ARDWARE
C
ONFIGURATION
66
7.4
B
ACKGROUND SUBTRACTION
73
7.5
S
TAGE CALIBRATION
74
8.
HTS SQUID HANDLING CAUTIONS
75
Table of Figures
Figure 1-1: SQUID System.................................................................................................. 10
Figure 1-2: Microscope Setup.............................................................................................. 11
Figure 2-1: Cryogenic Dewar .............................................................................................. 16
Figure 3-1 Overview of SMM770 wiring diagram.............................................................. 20
Figure 3-2 SMM770 detailed wiring diagram ..................................................................... 21
Figure 3-3: Manufacturer-supplied noise spectrum and tune specs..................................... 22
Figure 3-4 SQUID noise spectrum at (0-200Hz), 81.8 Kelvin, gain=x100......................... 24
Figure 3-5 SQUID noise spectrum at (0-3.2 kHz), 81.8 Kelvin, gain=x100 ....................... 24