Accelerator and Beam Physics Section
Accelerator and Beam Physics Section

Theoretical Beam Physics Research

Research in theoretical beam physics is carried out by the staff members of ABPS in the areas related to ongoing project activities. Fundamental beam dynamics studies to understand the focusing in solenoid and dipole magnets, and beam dynamics of an ellipsoidal bunch in focusing channels with space charge are some of the examples of studies performed by staff members of ABPS.

Understanding the focusing mechanism is a solenoid magnet
Understanding the focusing mechanism is a solenoid magnet


In past, theoretical and simulation studies have been performed in some areas of advanced accelerators, such as Smith-Purcell free-electron laser (SPFEL) and Cherenkov free-electron laser (FEL). A detailed theory of Smith-Purcell free-electron laser (SPFEL) and Cerenkov free-electron laser (CEFL) using the Maxwell-Lorentz approach has been worked out, and some novel configurations of these devices have been studied to show their viability as a compact source of terahertz radiation for various applications.

Development of computer codes for various beam dynamics studies is also being carried out in ABPS. Computer codes have been developed for multipacting studies in elliptic cavities, and longitudinal beam dynamics in proton accumulator ring. Recently a computer code to design an electron collector to collect the electrons, generated at the injection foil in the Accumulator Ring, also has been developed.

Results from In-house developed computer codes for (i) design of electron catcher in the accumulator ring (left) and (ii) multipacting studies in elliptic superconducting cavities (right)
Results from In-house developed computer codes for (i) design of electron catcher in the accumulator ring (left) and (ii) multipacting studies in elliptic superconducting cavities (right)


ABPS has also started working on the influence of material parameters on the electromagnetic performance of superconducting cavities. The outcome of studies show that the low purity niobium can also be used to make the superconducting cavites.

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