Oak Ridge, TN

Changer Labs
"Changing the way you handle samples"

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Alternate Configurations

Here are some alternate configurations we have done through time. There are big shields, small shields, NaI and Ge systems; some have automatic lids for 4 pi shielding and some don't. The earlier systems have a large square cover over the Y axis, Z axis, and hand mechanicals. Newer systems have the smaller cover with the smoked Plexiglass. At least one system also shows an optional, local color LCD display that shows system status.

Everyone's needs are a little different. The nice part about the Changer Lab's design is that it can be easily modified to accommodate your special needs.

Dual tray "Wide" configuration (200 samples 20 mL LSC vials) with full 4" shield, auto lid, and extra wall

Advantages: - maximum sample capacity, near 4pi shielding, NaI or Ge detectors on the end cap or in a well.

Dual tray "Wide" configuration (200 samples 20 mL LSC vials) with full 4" shield,  and extra wall. This system does NOT have the automatic lid as it is used for production NAA work that implements the automatic pull back feature to limit detector dead time.

If the sample activity is sufficient that dead time is a issue the extra shielding provided by closing the lid is not necessary.

Advantages: - maximum sample capacity, faster cycle time for load/unload operations

Single tray configuration (100 samples 20 mL LSC vials) 6 leg system with full 4" shield, auto lid, and extra wall.

Advantages: - near 4 pi shielding, NaI or Ge detectors on the end cap or in a well.

Single tray (100 sample 20 mL LSC vial) 4 leg system with small round shield. This system is NaI but the frame would easily accommodate a vertical Germanium dewar with LN2 or mechanical cooling.

Advantages: space, weight, cost. NaI or Ge detectors on the end cap or in a well.

Single tray (64 sample 50 mL centrifuge tube) 4 leg system with square shield and auto-lid. This system is Ge but the frame would easily accommodate a NaI.

Desktop system set up for side well NaI and minimal shielding

Advantages: cost and space. Easy to add more shielding.

Highly customized machine designed to insert known isotope samples  with significant activity into a very deep (~10 inches) re-entrant ion chamber for activity determination.

The automation of this measurement saves labor time, dose due to handling and simplifies time delayed recounts.

(See above for description)
 

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