Abstract
We demonstrate that a wide variety of current-pulse shapes can be generated using a linear-transformer-driver (LTD) module that drives an internal water-insulated transmission line. The shapes are produced by varying the timing and initial charge voltage of each of the module's cavities. The LTD-driven accelerator architecture outlined in [Phys. Rev. ST Accel. Beams 10, 030401 (2007)] provides additional pulse-shaping flexibility by allowing the modules that drive the accelerator to be triggered at different times. The module output pulses would be combined and symmetrized by water-insulated radial-transmission-line impedance transformers [Phys. Rev. ST Accel. Beams 11, 030401 (2008)].
Highlights
An LTD module is a type of induction voltage adder (IVA) [38]
Unlike a conventional IVA, each cavity of an LTD module is driven by capacitors and switches that are located within the cavity itself; an LTD module is inherently more compact than an IVA driven by external pulsedpower machines
II, we present several pulse shapes that can be produced by a single LTD module
Summary
A linear-transformer-driver (LTD) module consists of a number of inductive LTD cavities connected in series to achieve voltage addition [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37]. IVAs were originally designed to drive a vacuum magnetically insulated transmission line (MITL) [38] For such an IVA, part of the MITL is located within, and is concentric to, the IVA’s cavities. In Appendices B and C, we estimate the optimum output impedance and minimum current rise time, respectively, of an n-cavity LTD module under a certain set of conditions
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