Saddle coils
Contents
A set of six saddle (i.e. plasma-radial field) coils mounted in the section P-A shell gap. Three saddle coils are mounted to the upper shell pair, and three are mounted to the lower shell pair. Each coil is a two-turn, shielded loop.
Acquisition
The saddle coil signal exits the vessel by 10-pin Mil-C feedthroughs on the upper and lower ports of bay O-P, using six of the ten available pins (Fig. 1). As of Nov. 14th 2017, the upper and lower saddle coil sets respectively are routed to integrator 5, channels 26-28 and 29-31; they are digitized on Helios channels 58-60 and 61-63.
Cross-reference at the following links for integrators and digitizers.
Related Pages
Diagnostics
Magnetics (Local): Reentrant array | Toroidal array | Saddle coils | Shell eddy sensors
Magnetics (Areal): Poloidal flux loops | Loop voltage | Diamagnetic loop | IP Rogowski
Spectroscopy: Thomson scattering | ChERS | X-ray spectroscopy | Spectrometry | Vacuum UV spectroscopy
Microwaves: Reflectometry | Interferometry
Physical Probes: HFS edge probes | LFS SOL probes | RFEA
Operational Diagnostics: Ion gauges | Coil current monitors | Thermocouples | RTDs
