First demonstration of the use of crab cavities on hadron beams

Calaga, R.; Alekou, A.; Antoniou, Fanouria; Appleby, R. B.; Arnaudon, L; Artoos, Kurt; Arduini, G.; Baglin, V.; Barriere, S.; Bartosik, Hannes; Baudrenghien, P.; Ben‐Zvi, I.; Bohl, Thomas; Boucherie, A.; Brüning, Oliver; Brodzinski, K.; Butterworth, A.; Capatina, Ofelia; Calvo, Sébastien; Capelli, Teddy; Carlà, Michele; Carra, Federico; Carver, Lee; Castilla-Loeza, A.; Daly, E.; Dassa, Luca; Delayen, Jean; Silva, S.U. De; Garlaschè, M.; Gerigk, F.; Giordanino, L.; Glenat, D; Guinchard, Michael; Harrison, A. W.; Jensen, Erk; Julie, Charles; Jones, Thomas C.; Killing, F.; Krawczyk, A.; Levens, Thomas; Leuxe, Raphael; Lindstrom, Bjorn Hans Filip; Li, Z.; MacEwen, A.; Macpherson, A.; Menendez, Paula Freijedo; Mikkola, Tommi; Minginette, P.; Mitchell, J.; Montesinos, Eric; Papotti, Giulia; Park, H.; Pasquino, Chiara; Pattalwar, Shrikant; Pleite, E.C.; Powers, T.; Prochal, Boguslaw; Ratti, A.; Rossi, L. P.; Rude, Vivien; Therasse, Mathieu; Tomás, Rogelio; Stapley, Niall; Santillana, Ignacio Aviles; Shipman, Nicholas; Simonin, Jean-Michel; Sosin, Mateusz; Swieszek, Joanna; Templeton, Niklas; Vandoni, G.; Verdú-Andrés, Silvia; Wartak, Marcin; Welsch, Carsten; Wollman, David A.; Wu, Qiong; Xiao, Binping; Yamakawa, E.; Zanoni, C.; Zimmermann, F.; Zwozniak, Agnieszka

doi:10.1103/physrevaccelbeams.24.062001

Cited by 9 publications

(5 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Figure 8 we can see the images taken during the SPS test. The left one shows non crabbed beam (voltage = 0), the second one synchronous crabbing with two cavities (voltage of 1 MV from each cavity) and the right one the image of the beam with cavities run in the counter phase [3].…”

Section: Discussionmentioning

confidence: 99%

“…The principle of the crab cavities operation consists in generating the transversal electric field allowing for rotation of each interacting bunch before collision -see Figure 2. In consequence the collision crossing angle is reduced and effective cross section area is increased resulting in more efficient luminosity production [3].…”

Section: Introductionmentioning

confidence: 99%

“…Figure 2. Bunches colliding with a crossing angle without crabbing (left) and with the crab crossing (right) [3].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Cryogenic design of the crab cavity modules for the High Luminosity LHC at CERN

Brodzinski

Capatina

Capelli

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

The High Luminosity Large Hadron Collider (HL-LHC) upgrade is planned to take place during next long shut down of the LHC, starting in 2025. During this period the matching sections of both ATLAS and CMS experiments will be upgraded to allow for increasing collisions rate and more efficient luminosity production. One of the new element which will be introduced to the layout is the beam deflecting RF system so-called as crab cavities. Eight crab cavities modules, operating in superfluid helium, will be installed in this new machine layout. This paper will focus on the cryogenic design solutions adopted and integrated in the crab cavities cryogenic modules. The concept of the cryogenic modules was created in 2012 and evolved over the years with introduced optimizations of the cryogenic local cooling loops and related safety system. Design aspects of the chosen solutions for the first prototype and LHC compatible solution will be discussed. The thermal behavior results from operation on SPS proton beam from the first prototype module will be developed.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cryogenic design of the crab cavity modules for the High Luminosity LHC at CERN

Brodzinski

Capatina

Capelli

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…The High Luminosity LHC (HL-LHC) will be the first collider to use crab cavities for the recovery of head-on collisions between proton bunches [37]. Crabbing of proton bunches was recently demonstrated in the CERN's Super Proton Synchrotron (SPS) [38].…”

Section: Common Challenges and Enabling Technologiesmentioning

confidence: 99%

Electron-Hadron Colliders: EIC, LHeC and FCC-eh

2022

View full text Add to dashboard Cite

Electron-hadron colliders are the ultimate tool for high-precision quantum chromodynamics studies and provide the ultimate microscope for probing the internal structure of hadrons. The electron is an ideal probe of the proton structure because it provides the unmatched precision of the electromagnetic interaction, as the virtual photon or vector bosons probe the proton structure in a clean environment, the kinematics of which is uniquely determined by the electron beam and the scattered lepton, or the hadronic final state accounting appropriately for radiation. The Hadron Electron Ring Accelerator HERA (DESY, Hamburg, Germany) was the only electron-hadron collider ever operated (1991–2007) and advanced the knowledge of quantum chromodynamics and the proton structure, with implications for the physics studied in RHIC (BNL, Upton, NY) and the LHC (CERN, Geneva, Switzerland). Recent technological advances in the field of particle accelerators pave the way to realize next-generation electron-hadron colliders that deliver higher luminosity and enable collisions in a much broader range of energies and beam types than HERA. Electron-hadron colliders combine challenges from both electron and hadron machines besides facing their own distinct challenges derived from their intrinsic asymmetry. This review paper will discuss the major features and milestones of HERA and will examine the electron-hadron collider designs of the Electron-Ion Collider (EIC) currently under construction at BNL, the CERN’s Large Hadron electron Collider (LHeC), at an advanced stage of design and awaiting approval, and the Future Circular lepton-hadron Collider (FCC-eh).

show abstract

“…The global scheme was first successfully implemented at the KEKB-factory [3], where a world record luminosity of 2.1 × 10 −34 cm −2 s −1 was obtained. The local scheme was also demonstrated for the hadron beam in CERN's Super Proton Synchrotron (SPS) [4]. The Electron Ion Collider (EIC) also adopts the local scheme to achieve the desired luminosity (1 × 10 34 cm −2 s −1 ) [5].…”

Section: Introductionmentioning

confidence: 99%

Combined effects of Crab Dispersion and Momentum Dispersion in Colliders with Local Crab Crossing Scheme

Xu,

Luo,

Hao

2022

Preprint

View full text Add to dashboard Cite

In this paper, we present the effects of linear transverse-longitudinal coupling on beam size at Interaction Point (IP) of a collider with local crab crossing scheme, when time dependent transverse deflection (crab kicks) and dispersive orbit intertwine near IP. The analytic propagation formula and the closed orbit form of the crab dispersion and momentum dispersion are derived. The non-zero momentum dispersion at crab cavities and the non-ideal phase from crab cavities to IP are detailed with the derived propagation formula to predict the beam size distortion at IP with or without the beam-beam interaction. The linear results are compared with nonlinear simulation using the weak-strong beam-beam code.

show abstract

First demonstration of the use of crab cavities on hadron beams

Cited by 9 publications

References 23 publications

Cryogenic design of the crab cavity modules for the High Luminosity LHC at CERN

Cryogenic design of the crab cavity modules for the High Luminosity LHC at CERN

Electron-Hadron Colliders: EIC, LHeC and FCC-eh

Combined effects of Crab Dispersion and Momentum Dispersion in Colliders with Local Crab Crossing Scheme

Contact Info

Product

Resources

About