We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK


97% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Prediction of multipactor in the iris region of...
View graph of relations

« Back

Prediction of multipactor in the iris region of rf deflecting mode cavities

Research output: Contribution to journalJournal article


Article number122002
<mark>Journal publication date</mark>2011
<mark>Journal</mark>Physical Review Special Topics: Accelerators and Beams
Number of pages11
<mark>Original language</mark>English


Multipactor is a major cause of field limitation in many superconducting rf cavities. Multipacting is a particular issue for deflecting mode cavities as the typical behavior is not well studied, understood, or parametrized. In this paper an approximate analytical model for the prediction of multipactor in the iris region of deflecting mode cavities is developed. This new but simple model yields a clear explanation on the broad range of rf field levels over which the multipactor can occur. The principle multipactors under investigation here are two-point multipactors associated with cyclotron motion in the cavity’s rf magnetic field. The predictions from the model are compared to numerical simulations and good agreement is obtained. The results are also compared to experimental results previously reported by KEK and are also found in good agreement.