Imperial College London
Alternate

Dr J. Pozimski

Faculty of Natural Sciences, Department of Physics

Reader in Accelerator Physics
 
 
 
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Contact

 

+44 (0)20 7594 1552j.pozimski

 
 
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Location

 

1105Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Gibson:2018:7/072016,
author = {Gibson, SM and Alden, SE and Bosco, A and Letchford, A and Pozimski, J},
doi = {7/072016},
title = {A novel longitudinal laserwire to non-invasively measure 6-dimensional bunch parameters at high current hydrogen ion accelerators},
url = {http://dx.doi.org/10.1088/1742-6596/1067/7/072016},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - © Published under licence by IOP Publishing Ltd. Optical methods for non-invasive beam diagnostics of high current H- ion accelerators have been developed in recent years. Such laserwires typically measure a 1D beam profile and/or 2D transverse emittance from the products of photo-detached ions as a laser beam is scanned across the H- beam. For laser pulse durations (∼80 ns) longer than the RF period (∼3ns), the detector integrates many complete bunches, enabling only transverse beam monitoring. This paper presents a new technique to capture a series of time resolved transverse emittance measurements along the bunch train. A fast (∼10 ps) pulsed laser photo-detaches ions within each bunch and is synchronised to sample consecutive bunches at certain longitudinal positions along each bunch. A fast detector records the spatial distribution and time-of-flight of the neutralised H0, thus both the transverse and longitudinal emittance are reconstructed. We present simulations of a time varying pulsed laser field interacting within an H- bunch, and estimate the yield, spatial and time distributions of H0 arriving at the detector. We summarise the design of a recently funded longitudinal laserwire being installed in FETS at RAL, UK.
AU  - Gibson,SM
AU  - Alden,SE
AU  - Bosco,A
AU  - Letchford,A
AU  - Pozimski,J
DO  - 7/072016
PY  - 2018///
SN  - 1742-6588
TI  - A novel longitudinal laserwire to non-invasively measure 6-dimensional bunch parameters at high current hydrogen ion accelerators
UR  - http://dx.doi.org/10.1088/1742-6596/1067/7/072016
ER  -
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