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["Adelmann Andreas (PSI)" <andreas.adelmann AT psi.ch>]

Dear Colleagues Nate Pogue (PSI-Fellow) will talk about "New PSI Ring Flat 
Top Models – Comments, Questions, and Ideas"

Date: 28.4.2015
Time: 14.00
Place: WGBG 021

Abstract: The flat top cavity is of critical importance to the operation of 
the Ring Cyclotron. Its smooth operation is vital to accelerating record 
achieving currents (2.2 mA) to high energy (590 MeV). Without this device, 
the ring can produce approximately half the beam current achievable today. 
The purpose behind these new RF models and designs is that the cavity is one 
of the oldest components in the cyclotron and has not, until this winter, 
been moved in 35 years. If something were to go wrong with the cavity, an 
accurate field and mechanical model is necessary to reproduce the cavity 
immediately. In this presentation it will be shown that the existing RF model 
needed updating and the CAD model built from the cavity drawings were 
accurate but needed slight adjustment. The new model was used to model the 
modes of the cavity and how its RF can interact with the vacuum space of the 
cyclotron. Models will be shown illustrating the sensitivity of the cavity to 
perturbations and methods to minimize these effects. Additionally, two 
conceptual cavities will be presented to give thought as to future upgrades 
of the cavity.

Thanks for stopping by, and of course please distribute to interested 
collegues

Andreas 

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Dr. sc. math. Andreas (Andy) Adelmann
Staff Scientist
Paul Scherrer Institut WBBA/219 CH-5232 Villigen PSI
Phone Office: xx41 56 310 42 33 Fax: xx41 56 310 31 91
Phone Home: xx41 62 891 91 44
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Friday: ETH CAB H 85.1  +41 44 632 75 22
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The more exotic, the more abstract the knowledge, 
the more profound will be its consequences.
Leon Lederman 
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