Cavity BPM system tests for the ILC energy spectrometer

Slater, M.; Adolphsen, C.; Arnold, R.; Boogert, Stewart; Boorman, G.; Gournaris, F.; Hildreth, M.; Hlaing, C.; Jackson, F.; Khainovski, O.; Kolomensky, Yu. G.; Lyapin, A.; Maiheu, B.; McCormick, D.; Miller, D. J.; Orimoto, T.; Szalata, Z. M.; Thomson, M. A.; Ward, David J.; Wing, M.; Woods, M.

doi:10.1016/j.nima.2008.04.033

Cited by 12 publications

(16 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CBPMs have been successfully tested in numerous experiments, which have consisted of either closely spaced triplets [8,9] or used with specialized optics configurations, like a ballistic beam in the case of [10,11]. Three full production systems have been operating at LCLS [12], FERMI@ELETTRA [13] and XFEL/Spring-8 recently started commissioning [14].…”

Section: Introductionmentioning

confidence: 99%

Cavity beam position monitor system for the Accelerator Test Facility 2

Kim¹,

Ainsworth²,

Aryshev³

et al. 2012

Phys. Rev. ST Accel. Beams

Self Cite

View full text Add to dashboard Cite

The Accelerator Test Facility 2 (ATF2) is a scaled demonstrator system for final focus beam lines of linear high energy colliders. This paper describes the high resolution cavity beam position monitor (BPM) system, which is a part of the ATF2 diagnostics. Two types of cavity BPMs are used, C-band operating at 6.423 GHz, and S-band at 2.888 GHz with an increased beam aperture. The cavities, electronics, and digital processing are described. The resolution of the C-band system with attenuators was determined to be approximately 250 nm and 1 m for the S-band system. Without attenuation the best recorded C-band cavity resolution was 27 nm.

show abstract

Section: Introductionmentioning

confidence: 99%

Cavity beam position monitor system for the Accelerator Test Facility 2

Kim¹,

Ainsworth²,

Aryshev³

et al. 2012

Phys. Rev. ST Accel. Beams

Self Cite

View full text Add to dashboard Cite

show abstract

“…in Ref. [9]). The relatively small size of each momentum monitor of 20 meters will help to minimize known distortions such as tide and ground instability.…”

Section: Momenta In Opposite Directionsmentioning

confidence: 90%

On measurement of the isotropy of the speed of light

Wojtsekhowski¹

2014

EPL

View full text Add to dashboard Cite

show abstract

“…Model-independent measurement method Each BPM measurement is affected by noise, mainly from the electronics. To measure BPM resolutions, a large set of measured trajectories can be used, looking for correlations between the different BPMs [12]. Unlike traditional model-independent analysis (MIA) as in [13], the presented method does not require to analyze singular vectors which is why it can be more easily automated, but it also means it is less precise, as nonphysical dynamics can be accounted for.…”

Section: Bpms Noise Level Measurementmentioning

confidence: 99%

Trajectory measurements and correlations in the final focus beam line at the KEK Accelerator Test Facility

Renier

Bambade

Tauchi

et al. 2013

Phys. Rev. ST Accel. Beams

Self Cite

View full text Add to dashboard Cite

The Accelerator Test Facility 2 (ATF2) commissioning group aims to demonstrate the feasibility of the beam delivery system of the next linear colliders (ILC and CLIC) as well as to define and to test the tuning methods. As the design vertical beam sizes of the linear colliders are about few nanometers, the stability of the trajectory as well as the control of the aberrations are very critical. ATF2 commissioning started in December 2008, and thanks to submicron resolution beam position monitors (BPMs), it has been possible to measure the beam position fluctuation along the final focus of ATF2 during the 2009 runs. The optics was not the nominal one yet, with a lower focusing to make the tuning easier. In this paper, a method to measure the noise of each BPM every pulse, in a model-independent way, will be presented. A method to reconstruct the trajectory's fluctuations is developed which uses the previously determined BPM resolution. As this reconstruction provides a measurement of the beam energy fluctuations, it was also possible to measure the horizontal and vertical dispersion function at each BPMs parasitically. The spatial and angular dispersions can be fitted from these measurements with uncertainties comparable with usual measurements.

show abstract

Cavity BPM system tests for the ILC energy spectrometer

Cited by 12 publications

References 10 publications

Cavity beam position monitor system for the Accelerator Test Facility 2

Cavity beam position monitor system for the Accelerator Test Facility 2

On measurement of the isotropy of the speed of light

Trajectory measurements and correlations in the final focus beam line at the KEK Accelerator Test Facility

Contact Info

Product

Resources

About