CLIC and CTF3

Tecker, F.

doi:10.1088/1742-6596/110/11/112005

Cited by 12 publications

(10 citation statements)

References 6 publications

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“…The detailed CR operation with the new RFD is beyond the scope of this paper and is widely described in [19,20]. Here it is important to remark that the cavities have been installed in the CR (August 2008), rf power conditioning needed less than one hour, and each cavity has been fed 6 The modes are multicell modes and the loads connected to the two antennas are sufficient to give a strong damping.…”

Section: Operational Performancesmentioning

confidence: 99%

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Beam instability induced by rf deflectors in the combiner ring of the CLIC test facility and mitigation by damped deflecting structures

Alesini

Biscari

Ghigo

et al. 2011

Phys. Rev. ST Accel. Beams

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In the CTF3 (CLIC test facility 3) run of November 2007, a vertical beam instability has been found in the combiner ring during operation. After a careful analysis, the source of the instability has been identified in the vertical deflecting modes trapped in the rf deflectors and excited by the beam passage. A dedicated tracking code that includes the induced transverse wakefield and the multibunch multipassage effects has been written and the results of the beam dynamics analysis are presented in the paper. The mechanism of the instability was similar to the beam breakup in a linear accelerator or in an energy recovery linac. The results of the code allowed identifying the main key parameters driving such instability and allowed finding the main knobs to mitigate it. To completely suppress such beam instability, two new rf deflectors have been designed, constructed, and installed in the ring. In the new structures the frequency separation between the vertical and horizontal deflecting modes has been increased, changing the position of the rods inside the cells, and special antennas have been inserted to absorb the power released by the beam to the modes. The deflectors have been made in aluminum to reduce the costs and delivery time and have been successfully tested and installed in the ring. The design, the realization procedures, and the rf test results are illustrated.

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Section: Operational Performancesmentioning

confidence: 99%

“…Beam recombination in the CR has been achieved very soon without evidence of vertical instabilities [19,20]. As an example the scope traces from a ring BPM are reported in Fig.…”

Section: Operational Performancesmentioning

confidence: 99%

Beam instability induced by rf deflectors in the combiner ring of the CLIC test facility and mitigation by damped deflecting structures

Alesini

Biscari

Ghigo

et al. 2011

Phys. Rev. ST Accel. Beams

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“…The CLIC accelerator relies on a two-beam acceleration concept [11,12]. One of which is the main accelerator, operating at a low current ( $ 1 A) and the other is a high current drive beam ( $ 100 A).…”

Section: Wakefield Suppression At S-bandmentioning

confidence: 99%

“…There were two main NC linear collider research efforts up until 2004 which were concentrated on the next linear collider/global linear collider (NLC/GLC [8,9]) design and on the compact linear collider (CLIC) design [10][11][12]. After careful consideration, the International Technical Recommendation Panel (ITRP) decided to consolidate the efforts of the SC TESLA and NC NLC/GLC research efforts into a single SC technology choice.…”

Section: Introductionmentioning

confidence: 99%

Wakefield suppression in high gradient linacs for lepton linear colliders

Jones

2009

Phys. Rev. ST Accel. Beams

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The transverse wakefield excited by multiple bunches in ultrarelativistic charged particle beams in a linear collider must be adequately damped in order to preserve the luminosity of the colliding beams and to prevent a beam breakup instability developing. A review of the means of achieving this wakefield suppression is discussed in detail for normal conducting linacs utilized for linear colliders. In particular, the features of a damped and detuned series of structures are described and compared to other methods. A conspectus of experimental results along with theoretical predictions for this series of accelerating structures developed for the next-linear-collider/global-linear-collider is presented together with the prospects for wakefield suppression for the compact linear collider.

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“…In turn, high-energy collisions between the beamstrahlung photons may lead to the production of additional hadrons. With the beam parameters considered for this study [4], the nominal center-of-mass energy is 3 TeV, the luminosity is 6.5 × 10 34 cm −2 s −1 , the average energy loss of a beam particle due to beamstrahlung is 16%, and one expects 0.73 hadronic events per bunch crossing (we integrate the hadronic background over 75 bunch crossings, i.e. 20 ns).…”

Section: Discovery Limits For Charged and Neutral Mssm Higgs Bosons Amentioning

confidence: 99%

Charged and neutral minimal supersymmetric standard model Higgs boson decays and measurement of tan β at the compact linear collider

Coniavitis

Ferrari

2007

Pramana - J Phys

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The minimal supersymmetric extension of the standard model (MSSM) predicts the existence of new charged and neutral Higgs bosons. The pair creation of these new particles at the multi-TeV e + e − compact linear collider (CLIC), followed by decays into standard model particles, were simulated along with the corresponding background. High-energy beam-beam effects such as ISR, beamstrahlung and hadronic background were included. We have investigated the possibility of using the ratio between the number of events found in various decay channels to determine the MSSM parameter tan β and we have derived the corresponding statistical error from the uncertainties on the measured cross-sections and Higgs boson masses.

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CLIC and CTF3

Cited by 12 publications

References 6 publications

Beam instability induced by rf deflectors in the combiner ring of the CLIC test facility and mitigation by damped deflecting structures

Beam instability induced by rf deflectors in the combiner ring of the CLIC test facility and mitigation by damped deflecting structures

Wakefield suppression in high gradient linacs for lepton linear colliders

Charged and neutral minimal supersymmetric standard model Higgs boson decays and measurement of tan β at the compact linear collider

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