Precision magnet movers for the Final Focus Test Beam

Bowden, G. J.; Holik, P.J.; Wagner, S. R.; Heimlinger, G.; Settles, R.

doi:10.1016/0168-9002(95)00693-1

Cited by 20 publications

(22 citation statements)

References 5 publications

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“…Note, furthermore, that a common scale factor for all mover LVDT's will result in all magnet motions having a common scale factor, and this will be interpreted by the fitting process as a contribution to the BPM scale factor; only the case of 3 LVDT's with a common scale factor placed on a single mover will result in that magnet's strength fit being scaled. The expected amount by which a given LVDT may be scaled relative to the ensemble is 0.1% [31], and therefore the amount by which 3 LVDT's may be collectively scaled relative to the ensemble is close to 0.05%.…”

Section: Systematic Errorsmentioning

confidence: 97%

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Expanded studies of linear collider final focus systems at the Final Focus Test Beam

Tenenbaum¹

1995

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Section: Systematic Errorsmentioning

confidence: 97%

“…The FFTB Magnet Mover is described in [30] and [31]. Note that the "Big-Y" mode achieves a maximum modulation of cos 30° = 0.866.…”

Section: Magnet Moversmentioning

confidence: 99%

Expanded studies of linear collider final focus systems at the Final Focus Test Beam

Tenenbaum¹

1995

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“…These are installed in such a way as to allow high precision movement in y, z, and dy/dz (where y is vertical, and z is in the direction of motion of the beam). Further details of the mover scheme can found in [4]. Since these motors allow control and readback of the vertical position of the collimator jaws, it is unnecessary to control the beam, therefore, the beam could be centred between the collimator jaws, and the box moved to different positions to measure the change in the kick imparted to the beam.…”

Section: Measurement Techniquementioning

confidence: 99%

Measurements of the transverse wakefields due to varying collimator characteristics

Molloy

Seletskiy

Woods

et al. 2007

2007 IEEE Particle Accelerator Conference (PAC)

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We report on measurements of the transverse wakefields induced by collimators of differing characteristics. An apparatus allowing the insertion of different collimator jaws into the path of a beam was installed in End Station A (ESA) in SLAC. Eight comparable collimator geometries were designed, including one that would allow easy comparison with previous results, and were installed in this apparatus. Measurements of the beam kick due to the collimator wakefields were made with a beam energy of 28.5 GeV, and beam dimensions of 100 microns vertically and a range of 0.5 to 1.5 mm longitudinally. The trajectory of the beam upstream and downstream of the collimator test apparatus was determined from the outputs of ten BPMs (four upstream and six downstream), thus allowing a measurement of the angular kick imparted to the beam by the collimator under test. The transverse wakefield was inferred from the measured kick. The different aperture designs, data collection and analysis, and initial comparison to theoretical and analytic predictions are presented here.

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“…The position of quadrupole magnets and sextupole magnets is adjusted by cam-type movers [35], which are reused from those installed at the SLAC FFTB beam line. The rotation angle around the beam axis and the position in vertical and horizontal direction in the plane perpendicular to the beam axis are adjusted during beam operation so that the beams pass through the magnetic center of the magnet.…”

Section: Control Of Position Of Quadrupole and Sextupole Magnetsmentioning

confidence: 99%

ATF2 Proposal

Grishanov¹,

Logachev²,

Podgorny³

et al. 2005

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ForewordA decade of dedicated R&D at KEK, DESY, CERN, SLAC and other laboratories were crucial to the successful development of the concepts for a linear collider and for demonstrating that the technical goals are achievable. We are now entering the global design phase for the ILC, and test facilities, demonstration experiments and fundamental R&D will continue to be very important to helping us develop the best possible ILC design, and one that employs forward looking technology.The ATF2 builds on the considerable investment, success and strong team that were responsible for the ATF. The new features provided by ATF2 will enable us to embark on a program to test the very demanding beam delivery requirements for the ILC. In addition, this project has the feature that it is being planned and executed internationally. Therefore, it represents a useful testing ground for managing and executing a complex international accelerator project.

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Precision magnet movers for the Final Focus Test Beam

Cited by 20 publications

References 5 publications

Expanded studies of linear collider final focus systems at the Final Focus Test Beam

Expanded studies of linear collider final focus systems at the Final Focus Test Beam

Measurements of the transverse wakefields due to varying collimator characteristics

ATF2 Proposal

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