Features
- 4 inch thick low-background lead
- Easy to use lever-actuated door
- Compact – 2 foot by 2 foot
floor space
- Graded tin and copper liner
- Adjustable foot pads
The 747E is 10 cm (14 in.) shorter* than
the 747 and does not have a door lift mechanism
The Model 747 CANBERRA Lead Shield is
intended for use with Germanium detectors. It will
prevent high background counts due to external sources,
thus reducing counting times and improving the lower
limit of detection. This shield is compact and easy to
use with only 0.4 m2 (4 ft2) of
floor space required. The shield may be set up so that
the door opens right or left without need for clearance
to the rear. A convenient lever-actuated door lift allows
the door to be placed firmly on the shield to prevent
direct path radiation from entering.
Front View Dimensions in mm (in.)
The 1 mm (0.040 in.) tin and 1.6 mm
(0.062 in.) copper graded liner prevents interference by
lead x rays. The exterior is attractively finished with
light grey textured paint, the interior is coated with
clear polyurethane to prevent oxidation and facilitate
cleaning. The floor of the shield has a 11.4 cm (4.5 in.)
diameter hole which will accommodate either flanged or
slimline cryostats. Four-inch long, clamp-on cold finger
extensions are available for most cryostats. Preamp
hardware Option PHW (for CANBERRA Preamp) is also
required to ensure that flanged cryostats fit within the
28 cm (11 in.) shield diameter. Adjustable foot pads
provide a convenient means for leveling. Optional annular
lead plugs are available to minimize the streaming path
through the hole in the shield floor. A detector lift and
taller table are available to accommodate installation of
other cryostat types, such as, the MAC’s and
7500SL-RDC. See option list below for details.
Note to our International Customers: If you
would like a quote on this product, please contact
your Local Sales Office for assistance.
|
| 747-1 |
Annular Plug (7500 only) |
| 747-2 |
Offset Annular Plug (7500SL only) |
| 747-3 |
Split Annular Plug (7500SL-RDC only) |
| 747-4 |
Detector Lift (for use with MACs) |
| 747-5 |
Taller Table (for use with MAC’s and 7500SL-RDC) |
| 747 |
Lead Shield |
| CFE-4 |
Clamp-on cold finger extension |
| PHW |
Special Preamp Hardware (7500 only) |
