 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
 |
|||
Calibration Systems
A variety of radioactive and LED sources are deployed in KamLAND to calibrate the detectors response to different types of events. The design of systems on which to deploy these sources that can operate in the oil, are low radioactivity, and have reproducible results presents many engineering difficulties. The phase 1 system is the Z-axis system. Phase 2 is the 4PI system which is under construction.
|
The 4PI System
When this system is complete sources can then be deployed anywhere within the detector. This will allow a detailled study of how the detector's response varies with the position of the event. Link to the new KamLAND 4pi full-volume calibration web site: 4pi web site |
|
|
Z-axis Deployment System
A Z-axis deployment system is currently being utilized in KamLAND for detector calibration. It allows the deployment of various radioactive and LED sources along the z-axis of the detector by attaching a source to a cable which is then lowered into the detector via a remotely controlled motor. |
 |
|
|
The position of the source inside the detector is given by an electronic readout of a shaft encoder positioned at the top pulley of the system assembly. |
|
The control hardware is operated through a LabView software program. |
|
|
The deployment assembly is encased within a sealed glovebox. It is accessible through gloveports which allow the attachment of sources, and through an airlock system used to load and remove sources.The glovebox is purged with Nitrogen gas prior to accessing the detector region through both a 6" and 16" gate valve. |
