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Micron size laser-wire system at the ATF extraction line

Proceedings of EPAC 08 1065-1067

Authors:

A Aryshev, GA Blair, ST Boogert, GE Boorman, A Bosco, L Corner, L Deacon, N Delerue, B Foster, F Gannaway, DF Howell, P Karataev, LJ Nevay, M Newman, R Senanayake, R Walczak, H Hayano, N Terunuma, J Urakawa

Abstract:

The ATF extraction line laser-wire system has recently been upgraded allowing the measurement of micron scale transverse size electron beams. We report on the hardware upgrades, including focusing lens, laser and mechanical systems. First measurements using the new system from recent operation at the ATF in KEK are presented.

Resolution of Longitudinal Profile Measures using Coherent Smith-Purcell Radiation with the Number of Gratings and the Number of Pulses Used

arxiv

Authors:

Mélissa Vieille Grosjean, Joanna Barros, Nicolas Delerue, Faissal Bakkali Taheri, George Doucas, Ivan Vasilyevich Konoplev, Armin Reichold, Christine Isabel Clarke

Abstract:

The E-203 collaboration is testing a device on FACET at SLAC to measure the longitudinal profile of electron bunches using Smith-Purcell radiation. At FACET the electron bunches have an energy of 20~GeV and a duration of a few hundred femtoseconds. Smith-Purcell radiation is emitted when a charged particle passes close to the surface of a metallic grating. We have studied the stability of the measurement from pulse to pulse and the resolution of the measure depending on the number of gratings used.
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Search for new phenomena in final states with large jet multiplicities and missing transverse momentum using sqrt s = 7 TeV pp collisions with the ATLAS detector

The Journal of High Energy Physics 2011:11

Authors:

AJ Barr, more than 10, The ATLAS Collaboration
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Sensor Compendium

Office of Scientific and Technical Information (OSTI)

Authors:

M Artuso, et al.
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Simulation of LiCAS Error Propagation

ECONF C0705302:MET05,2007

Authors:

G Grzelak, A Reichold, J Dale, M Dawson, J Green, Y Han, M Jones, G Moss, B Ottewell, R Wastie, D Kämptner, J Prenting, M Schlösser

Abstract:

Linear Collider Alignment and Survey (LiCAS) R&D group is proposing a novel automated metrology instrument dedicated to align and monitor the mechanical stability of a future linear high energy e+e- collider. LiCAS uses Laser Straightness Monitors (LSM) and Frequency Scanning Interferometry (FSI) for straightness and absolute distance measurements, respectively. This paper presents detailed simulations of a LiCAS system operating inside a Rapid Tunnel Reference Surveyor (RTRS train). With the proposed design it is feasible to achieve the required vertical accuracy of the order of 200 micons over 600 m tunnel sections meeting the specification for the TESLA collider.
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