Privacy and Security Notice
nmr
NMR SENSORS
The NMR coils for the top
and bottom containers are placed outside the cells: both a
proton (1 loop) and deuteron (4 loop) coils are present for each cell.
A Cu/Be coaxial cable connects the coils to a flexible SUCOFORM 86 cable
to allow the up and down movement of the stick and the connection to the
outside through an hermethic vacuum feed-through.
Each cable is marked with a different color to distinguish
the different coils:
| COLOR |
COIL |
| red |
proton bottom target |
| blue |
proton top target |
| green |
deuteron bottom target |
| yellow |
deuteron top target |
The electrical characteristic of cable and loops from the
outside hermetic feed-through can be measured with the Hewlett-Packard
TDR. When instrument is set to lenght in meter, electrical speed equal
to 0.69c (teflon insulator), the following impedance graph is displayed:
here A represents the zero lenght point, B the internal cable lenght, C
the coil region and D the position of the cursor at Z=10 Ohm.

STICK #1 (STICK #2)
(to
be updated)
|
|
A |
B (meters) |
C (meters) |
D (meters) |
| proton bottom target |
0 |
0.825 (0.825) |
0.86 (0.86) |
1.02 (1.05) |
| proton top target |
0 |
0.825 (0.825) |
0.88 (0.87) |
1.14 (1.08) |
| deuteron bottom target |
0 |
0.805 (0.805) |
1.04 (0.90) |
1.72 (1.60) |
| deuteron top target |
0 |
0.805 (0.805) |
1.04 (0.90) |
1.70 (1.58) |
NMR Cables

|
|
|
Deuteron
|
Proton
|
|
|
|
A
[cm]
|
B
[cm]
|
C
[cm]
|
D
[cm]
|
E
[cm]
|
F
[cm]
|
|
Stick #1
|
TOP
|
|
44
|
|
|
44
|
|
|
BOTTOM
|
|
44
|
|
|
44
|
|
|
Stick #2
|
TOP
|
36
|
44
|
|
36
|
44
|
|
|
BOTTOM
|
41
|
44
|
|
41
|
44
|
|