Heavy ion fusion injector program

Parametic Study of the current limit within a single driver-scaletransport beam line of an induction Linac for Heavy Ion Fusion

“…The injector consists of a hot-surface ionization source assembly followed by a 750 kV extraction diode and by four electrostatic quadrupole accelerator (ESQ) biased to focus the beam transversely while accelerating longitudinally (2 MV) [123,127]. The high voltage dome also houses a hydraulically driven 400 Hz, 10 kVA alternator which powers all the source electronics including the telemetry system.…”

“…Note that the FieldPoint™ modules were not part of the original configuration described in Refs. [123,127].…”

Heavy-ion fusion injector experiments

“…at Lawrence Berkeley Laboratory [1]. Scaled experiments have been conducted to study possible beam emittance growth due to beam aberrations in an ESQ injector.…”

Simulation of transient effects in the heavy ion fusion injectors

“…The transient problem is one of main concerns in an injector for the proposed Induction Linac Systems Experiments (ILSE) [7] where the ion pulse length is comparable to the injector length. Two options are considered for the ILSE injector [8]: one uses a set of axisymmetric electrodes arranged in an electrostatic accelerating Pierce column (ESAC), and the other uses an axisymmetric front end, such as a small ESAC pre-injector, followed by a sequence of electrostatic accelerating quads (ESQ). We have used the 2-D code, GYMNOS, to study beam emittance and the ion transient effects in several of the ILSE injector variants that have been proposed and tested during the design phase and have found excellent agreement in most cases in which comparison was possible.…”