Cell Design for Damped Detuned Structure (DDS) of the Next Linear Collider (NLC)
We used Omega3P to determine the dimensions for the 206 cells in the NLC Damped Detuned Structure. Each cell has 11 distinguished dimensions. The following is a picture of the cell manufactured according to the designed parameters. Microwave QC of the cells verified frequency accuracy of 1 part in 10,000 as targeted (the same as the machining tolerance). That would have led to potential savings of more than $100 millions in NLC machine cost because the DDS is 14% more efficient than the structure with standard cell designs.
Heating Study for PEP-II Interaction Region
Omega3P was used to compute the trapped modes in the Interaction Region (IR) of the PEP-II. The calculated power distribution on the vacuum chamber walls provided insights for an improved design of the PEP-II IR. The following is the field distribution of a mode in the IR.
Unable to render embedded object: File (Omega3pAccompPEPIIIR.png?) not found.
The total power distribution in the IR is shown on the left. The upgrade of the IR resulted in 15% increase in the beam current, leading to higher luminosity and enabling new physics discovery. The right picture was the signature of the new particle found soon after the IR upgrade.
Unable to render embedded object: File (PEPIIIRPowerDist.png?) not found. 