Prof Dr Armin Reichold: Publications

The LiCAS-RTRS - A survey system for the ILC

Proceedings of EPAC 2006, Edinburgh, Scotland European Physical Society Accelerator Group (EPS-AG) (2006)

Authors:

Armin Reichold, Mike Dawson, John Green, Yanmei Han, Mark Jones, Gregory Moss, Brian Ottewell, Colin Perry, Roy Wastie, Daniel Kaemtner, Johannes Prenting, Ernst-Otto Saemann, Markus Schloesser, Grzegorz Grzelak

Abstract:

The ILC requires an unprecedented accuracy and speed for the survey and alignment of its components. The Rapid Tunnel Reference Surveyor (RTRS) is a self-propelled train intended to automatically survey a reference network in the ILC tunnels with a design accuracy of 200 microns over distances of 600 m. A prototype RTRS has been built by the LiCAS collaboration. It will shortly commence operation at DESY. The operation principle of the RTRS will be explained. The status of the project's hardware, software and calibrations as well as the principles and performance of the underlying measurement techniques will be described.

A 51�� of Laser System Requirements for Application in Beam Diagnostics and Polarimetry at the ILC

CERN (2006)

Authors:

AH Reichold, Sudhir Dixit, Nicholas Delarue, Ken Peach

The LiCAS-RTRS -- A Survey System for the ILC

CERN (2006)

Authors:

AH Reichold, Colin Perry, Daniel Kaemtner, Johannes Prenting

Measurement of the azimuthal angle distribution of leptons from W boson decays as a function of the W transverse momentum in pp ^- collisions at s=1.8TeV

Physical Review D - Particles, Fields, Gravitation and Cosmology 73:5 (2006)

Authors:

D Acosta, T Affolder, MG Albrow, D Ambrose, D Amidei, K Anikeev, J Antos, G Apollinari, T Arisawa, A Artikov, W Ashmanskas, F Azfar, P Azzi-Bacchetta, N Bacchetta, H Bachacou, W Badgett, A Barbaro-Galtieri, VE Barnes, BA Barnett, S Baroiant, M Barone, G Bauer, F Bedeschi, S Behari, S Belforte, WH Bell, G Bellettini, J Bellinger, D Benjamin, A Beretvas, A Bhatti, M Binkley, D Bisello, M Bishai, RE Blair, C Blocker, K Bloom, B Blumenfeld, A Bocci, A Bodek, G Bolla, A Bolshov, D Bortoletto, J Boudreau, C Bromberg, E Brubaker, J Budagov, HS Budd, K Burkett, G Busetto, KL Byrum, S Cabrera, M Campbell, W Carithers, D Carlsmith, A Castro, D Cauz, A Cerri, L Cerrito, J Chapman, C Chen, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, ML Chu, JY Chung, WH Chung, YS Chung, CI Ciobanu, AG Clark, M Coca, A Connolly, M Convery, J Conway, M Cordelli, J Cranshaw, R Culbertson, D Dagenhart, S D'Auria, P De Barbaro, S De Cecco, S Dell'Agnello, M Dell'Orso, S Demers, L Demortier, M Deninno, D De Pedis, PF Derwent, C Dionisi, JR Dittmann, A Dominguez, S Donati, M D'Onofrio, T Dorigo, N Eddy, R Erbacher, D Errede, S Errede

Abstract:

We present the first measurement of the A2 and A3 angular coefficients of the W boson produced in proton-antiproton collisions. We study W→eνe and W→μνμ candidate events produced in association with at least one jet at CDF, during Run Ia and Run Ib of the Tevatron at s=1.8TeV. The corresponding integrated luminosity was 110pb-1. The jet balances the transverse momentum of the W and introduces QCD effects in W boson production. The extraction of the angular coefficients is achieved through the direct measurement of the azimuthal angle of the charged lepton in the Collins-Soper rest-frame of the W boson. The angular coefficients are measured as a function of the transverse momentum of the W boson. The electron, muon, and combined results are in good agreement with the standard model prediction, up to order αs2 in QCD. © 2006 The American Physical Society.

A laser-wire system at the ATF extraction line

EPAC 2006 - Contributions to the Proceedings (2006) 738-740

Authors:

ST Boogert, G Blair, G Boorman, A Bosco, L Deacon, C Driouichi, P Karataev, T Kamps, N Delerue, S Dixit, B Foster, F Gannaway, DF Howell, M Qureshi, A Reichold, R Senanayake, A Aryshev, H Hayano, K Kubo, N Terunuma, J Urakawa, LJ Jenner, A Brachmann, J Frisch, M Ross

Abstract:

A new laser-wire (LW) system has been installed at the ATF extraction line at KEK, Tsukuba. The system aims at a micron-scale laser spot size and employs a mode-locked laser system. The purpose-built interaction chamber, light delivery optics, and lens systems are described, and the first results are presented.

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