Optimal Control of Gains in a Linear Accelerator: A Supervisory Method for Vector-Sum Control

Autor:	Rezaeizadeh, Amin, Smith, Roy
Jazyk:	angličtina
Rok vydání:	2017
Předmět:	radio frequency (RF) control Supervisory control Free electron laser (FEL) Convex optimization hierarchical control system Linear accelerator
ISSN:	1063-6536 1558-0865
DOI:	10.3929/ethz-b-000237782
Popis:	In a linear accelerator, driven by radio frequency (RF) amplifier stations, one must precisely control the energy gain of the accelerating beam. The RF stations can be viewed as amplifiers placed sequentially to accelerate the beam. This brief presents two control schemes within which the RF stations act as actuators, and a centralized control unit controls the beam energy by acting either on the RF amplitudes or on the RF phases. The control algorithms are based on convex optimization problems with different objectives. The two approaches are successfully tested at the SwissFEL injector test facility using three full-scale RF stations. The two methods are compared from both performance and complexity points of view. IEEE Transactions on Control Systems Technology, 25 (5) ISSN:1063-6536 ISSN:1558-0865
Databáze:	OpenAIRE
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