DARHT Axis II Magnet Models
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
There are known errors in the magnetic fields used to model the Axis II accelerator in the optics codes, XTR and LAMDA. These are due to the changes in the cell geometry and the proximity of the Metglas cores to the magnet coils. These were initially investigated by Houck [1] prior to the design change which resulted in adding 1.0 inch to the length of the accelerator cells. The interaction with the Metglas results in a shift and asymmetry in the magnetic field in addition to some field enhancement. Magnet models for the DARHT Axis II accelerator magnets were developed prior to modifications of the cells to improve the voltage standoff. New models have been developed representing the present cell configuration. The original and extended intercell magnets have also been modeled in the presence of nearby cells. Prior models did not consider the effect of the Metglas in the nearby cells for the extended intercell magnets. The resulting magnet models differ slightly from the original models. All magnet models were made on the basis of the nominal accelerator cell layout. The actual positions of each cell will vary from this nominal position. In addition, there is evidence that every time maintenance (cell cleaning and/or replacement) is performed on the accelerator, the location and alignment of the accelerator solenoids will shift.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1127471
- Report Number(s):
- LA-UR-14-22435
- Country of Publication:
- United States
- Language:
- English
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