Slow data logging is sufficient. Each sextant has 5 recoolers, plus one recooler associated with the valve box for that sextant. Each RHIC ring, then, has 72 temperature sensors. A total of 144 sensors for the two rings should be logged for a comfort display. The recoolers produce a saw-tooth type temperature plot vs. distance when they are functioning properly.
Temperatures increase approaching a recooler and then drop on exit from the recooler.
The RHIC Magnet group will use the logging system primarily for real-time monitoring of magnet currents, by magnet group personnel. It is unclear whether Operations would make use of logged magnet current data. Magnet data is expected to be logged at approximately five-second intervals. The magnet group has a system in place for collecting large amounts of data in the event of a quench, which would remain separate from the general logging system. Magnet voltage data is provided to the cryogenics group, via a mechanism that is also expected to remain separate from the logging system.