A unique identifier for coil (filament) files that we post on the Web is needed for configuration control of the reference design. The following convention for naming coil files should be followed:

TF01R03

The first one or two letters identify the coil set and would be:

M for modular coils

TF for TF coils

PF for PF coils

TC for trim coils

The 2-digit identifier following TF uniquely identifies the geometry of the coil centroids. If we change the geometry of the centroid, the TF coil set would be re-named TF02 instead of TF01. A healed modular coil set would require a new number because the geometry of the coil centroid would change.  README files should describe the pedigree of each coil set.

The 2-digits that follow the R represent the revision number. The revision number is changed whenever the coil representation is changed WITHOUT CHANGING THE COIL CENTROID LOCATION. This might happen if we (1) changed the number of filaments along the length of the coil (2) changed the number of filaments in the coil cross-section (3) changed the cross-section of the coil and had to changed the multi-filament representation accordingly of (4)made an error in posting the data.

The same logic would apply for naming a combined coils file, for instance

C45R00

would be a unique identifier for a combined coils file. It would be a concatenation of a uniquely identified modular coil file, TF coil file and PF coil file (with some renumbering of the coil groups perhaps). The two digits following the C would be incremented if ANY of the two digits in the M, TF, or PF files changed. The revision number (the 2 digits following the R) would be changed if only the revision number in any of the member coil sets changed.

Art Brooks will assign these sequential identifiers FOR POSTED FILES of the reference design. As we presently do, individuals could assign their own identifiers as they develop coil options. The sequential identifiers would not be used for coil sets just posted for design studies. In that case, we would use the identifier used by the individual who generated the coil set.