Solution for Secure Private Data Storage in a Cloud

Shatilov, Kirill A.; Boiko, Vladislav; Krendelev, Sergey; Anisutina, Diana; Sumaneev, Artem

doi:10.15439/2014f43

Cited by 10 publications

(6 citation statements)

References 5 publications

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“…This growth appears to be caused by the damping of coherent motion and requires a detailed comparison with the strong-strong simulation. Other factors that require investigation are the effects of chromaticity, collisions with two interaction points, and combined phenomena coupled with beamstrahlung [25].…”

Section: Discussionmentioning

confidence: 99%

Cross-wake force and correlated head-tail instability in beam-beam collisions with a large crossing angle

Kuroo

Ohmi

Oide

et al. 2018

Phys. Rev. Accel. Beams

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This paper discusses novel coherent beam-beam instability in collisions with a large crossing angle. The instability appears in the correlated head-tail motion of two colliding beams. A cross-wake force, which is localized at the collision point, is introduced to represent the head-tail correlation between colliding beams. A mode-coupling theory based on this localized cross-wake force enables us to explain the correlated healtail instability. The use of a collision scheme with a large crossing angle is becoming popular in the design of electron-positron colliders. An example thereof is the SuperKEKB project, in which a collision with a large crossing angle is performed to boost the luminosity to 0.8 × 10 36 cm −2 s −1. Future circular colliders will also be designed with a large crossing angle. Strong-strong simulations, which have shown the first coherent head-tail instability, can limit the performance of proposed future colliders. The mechanism whereby this instability occurs is mode coupling due to the cross-wake force. This instability may affect all collider designs based on the crab waist scheme.

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Section: Discussionmentioning

confidence: 99%

Cross-wake force and correlated head-tail instability in beam-beam collisions with a large crossing angle

Kuroo

Ohmi

Oide

et al. 2018

Phys. Rev. Accel. Beams

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“…In the CDR [6], the operation at the Z and W assumed a 60 • /60 • phase advance per arc cell. The mitigation of the combined impedance and beam-beam effects requires a larger momentum compaction factor than in the CDR [14]. This has resulted in a "long" 90 • cell, of twice the cell length used for the H and t t operation [15].…”

Section: Parameter Updatementioning

confidence: 99%

Future Circular Lepton Collider FCC-ee: Overview and Status

Agapov¹,

Benedikt²,

Blondel³

et al. 2022

Preprint

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The worldwide High Energy Physics community widely agrees that the next collider should be a Higgs factory. Acknowledging this priority, in 2021 CERN has launched the international Future Circular Collider (FCC) Feasibility Study (FS). The FCC Integrated Project foresees, in a first stage, a high-luminosity high-energy electron-positron collider, serving as Higgs, top and electroweak factory, and, in a second stage, an energy frontier hadron collider, with a centreof-mass energy of at least 100 TeV. In this paper, we address a few key elements of the FCC-ee accelerator design, its performance reach, and underlying technologies, as requested by the Snowmass process. The Conceptual Design Report for the FCC, published in 2019, serves as our primary reference. We also summarize a few recent changes and improvements.

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“…The betatron tunes working points adopted by now are: ν − x = 5.098, ν − y = 5.164 and ν + x = 5.1023, ν + y = 5.139, which, according LIFETRAC [11] simulations should provide good luminosity and lay in a rather large stable area still to be explored. Transverse betatron coupling has been optimized by tuning the rotations of the low-β focusing quadrupoles.…”

Section: Daφne Commissioningmentioning

confidence: 99%

DAΦNE and KLOE-2

Santis¹

2015

Phys. Scr.

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Abstract. The DAΦNE collider, located in the Frascati National Laboratories of INFN, has two main rings, where electrons and positrons are stored to collide at a center of mass energy of 1.02 GeV, the φ resonance mass. KLOE-2 experiment is located at the collider interaction region. The detector is capable to observe and collect data coming from φ decay: charged and neutral kaon pairs, lighter unflavored mesons (η, η , f 0 , ao, ω/ρ).In the first half of 2013 the KLOE detector has been upgraded inserting new detector layers in the inner part of the apparatus, around the interaction region in order to improve detector hermeticity and acceptance. The long shutdown has been used to undertake a general consolidation program aimed at improving the DAΦNE performances.This contribution presents the φ-factory setup and the achieved performances in terms of beam currents, luminosity and related aspects together with the KLOE-2 physics program, upgrade status report and recent physics results. DAΦNE preparation for KLOE-2 physics runDAΦNE [1] is a double ring lepton collider working at the Φ-resonance c.m. energy (1.02 GeV). The two rings layout crosses two times, but the vacuum chamber is shaped in a such way that only one Interaction Region (IR) is possible where the KLOE-2 detector is currently installed. The complex includes a S-band linac, 180 m long transfer lines and an accumulator/damping ring, providing fast and high efficiency top-up electron/positron injection. DAΦNE reached its maximum luminosity during the test of the new Crab-Waist (CW) collision scheme [2] achieving a peak luminosity, L = 4.5 × 10 32 cm −2 s −1 , two orders of magnitude higher than the one measured by other colliders working at the same c.m. energy.The new IR [3] for the KLOE-2 experiment with CW has been designed, installed and tested already ‡ on behalf of KLOE-2 Collaboration and DAΦNE team:

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Solution for Secure Private Data Storage in a Cloud

Cited by 10 publications

References 5 publications

Cross-wake force and correlated head-tail instability in beam-beam collisions with a large crossing angle

Cross-wake force and correlated head-tail instability in beam-beam collisions with a large crossing angle

Future Circular Lepton Collider FCC-ee: Overview and Status

DAΦNE and KLOE-2

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