Using Optical Transition Radiation (OTR) to Characterize a 3.25MeV, 1.45KA Electron Beam Distribution from a 50mm Field Emission Cathode
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Rel, Ryle Randon↗
Engineering topics
Moir, David C.
Publications and source records attributed to Moir, David C..
Progress in penumbral image source reconstruction with finite penetrating radiation
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Jaworski, Michael Andrew↗
Installation and Testing of a Diamagnetic-Loop-Based Beam Radius Monitor (BRM) on the DARHT-I Linear Induction Accelerator
As previously described, we have built a non-interceptive beam radius monitor that employs a diamagnetic loop. This device has been installed and tested with beam on the DARHT-I downstream transport. Installation details and sample test results are given in this report.
43 PARTICLE ACCELERATORS↗
Beam Envelope Variation due to Space-Charge Neutralization
Our non-invasive, time-resolved diamagnetic loop measurements of beam size during the electron current-pulse flattop at the exit of our 20-MeV linear induction accelerator revealed that the beam size varied by about 13% during the current flattop. This was an unexpected result, since both current and energy were constant during the interval of radius variation. One possible cause, poor vacuum, was investigated using a time resolved envelope equation. It was found that sufficiently high residual-gas pressure in the downstream transport region could result in the observed variation.
43 PARTICLE ACCELERATORS↗