Non-Intercepting Monitor of Beam Current and Position

Avery, R.; Faltens, A.; Hartwig, E.

doi:10.1109/tns.1971.4326231

Cited by 18 publications

(3 citation statements)

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“…When a bunch of charged particles passes through the aperture of the BPM, voltage pulses are induced on each stripline; more details are given in [13]. The voltage pulse is determined by the beam current IðtÞ, the BPM inner radius R, the transverse position of the bunch within the BPM (x, y) and the impedance of the measurement electronics ρ.…”

Section: A Stripline Signalsmentioning

confidence: 99%

“…For a beam traveling parallel to the BPM axis and with the top and bottom striplines designated as T and B respectively, considering only the vertical offset y (and assuming that y ≪ R), the expressions for the voltages induced on the striplines are [13] In the difference over sum signal processing scheme used here this pair of signals are added to form the sum (V Σ ) and subtracted to form the difference (V Δ ):…”

Section: B Signal Processingmentioning

confidence: 99%

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Design and performance of a high resolution, low latency stripline beam position monitor system

Apsimon

Bett

Kraljevic

et al. 2015

Phys. Rev. ST Accel. Beams

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A high-resolution, low-latency beam position monitor (BPM) system has been developed for use in particle accelerators and beam lines that operate with trains of particle bunches with bunch separations as low as several tens of nanoseconds, such as future linear electron-positron colliders and free-electron lasers. The system was tested with electron beams in the extraction line of the Accelerator Test Facility at the High Energy Accelerator Research Organization (KEK) in Japan. It consists of three stripline BPMs instrumented with analogue signal-processing electronics and a custom digitizer for logging the data. The design of the analogue processor units is presented in detail, along with measurements of the system performance. The processor latency is 15.6 AE 0.1 ns. A single-pass beam position resolution of 291 AE 10 nm has been achieved, using a beam with a bunch charge of approximately 1 nC.

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Section: A Stripline Signalsmentioning

confidence: 99%

Section: B Signal Processingmentioning

confidence: 99%

Design and performance of a high resolution, low latency stripline beam position monitor system

Apsimon

Bett

Kraljevic

et al. 2015

Phys. Rev. ST Accel. Beams

View full text Add to dashboard Cite

show abstract

“…Therefore, one should distinguish between two kinds of pick-up systems: those having their longitudinal discontinuities far apart compared to the bunch length, and those having their discontinuities very close to each other, the bunch being much longer than the electrode. Under both of these headings one can list all kinds of non-intercepting obstacles: loops, 3^ waveguides, cavities, 5^ buttons, 6^ strips, 7 ' 6 ' gaps, 9 ' 31 " plates, 11 * 12 half-moons, 13^ sections of cylinders, 1 '*'' coils, 15 ' etc. The systems associated with these various types of beam detection are Position Monitors, which can also operate in the single turn mode for the case of not-yet-storing storage rings or for beam transport lines, Current Monitors, Beam Dampers using feedback on a turn-to-turn basis to prevent the rise of transverse or logitudinal coherent oscillations, measurement of tunes, investigations of beam damping parameters, or diagnostic techniques probing bunches' raultipole oscillations.…”

Section: Introductionmentioning

confidence: 99%