First results on proton extraction from the CERN-SPS with a bent crystal

Akbari, H.; Altuna, X.; Bardin, S.; Bellazzini, R.; Biryukov, V.M.; Brez, A.; Bussa, M. P.; Busso, L.; Calcaterra, A.; Carboni, G.; Costantini, F.; Sangro, R. de; Elsener, K.; Ferioli, F.; Ferrari, A.; Ferri, G.; Ferroni, F.; Fidecaro, G.; Freund, Andreas K.; Guinand, R.; Gyr, M.; Herr, W.; Hilaire, Amanda St.; Jensen, Bente; Klem, J.; Lanceri, L.; Maier, K.; Massai, M.M.; Mertens, Volker; Møller, S.P.; Morganti, S.; Palamara, O.; Peraire, S.; Petrera, S.; Placidi, M.; Santacesaria, R.; Scandale, W.; Schmidt, R.; Taratin, A.M.; Tosello, F.; Uggerhøj, E.; Vettermann, B.; Vita, P.F.; Vuagnin, G.; Weisse, E.; Weisz, S.

doi:10.1016/0370-2693(93)90024-c

Cited by 82 publications

(44 citation statements)

References 9 publications

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“…Protons diffusing from a 120 GeV beam were extracted at an angle of 8.5 mrad with a bent silicon crystal. Efficiencies of ~10-20%, orders of magnitude higher than the values achieved previously, were measured for the first time [8][9][10]. The extraction studies at SPS clarified several aspects of the technique.…”

Section: Introductionmentioning

confidence: 67%

The schemes of proton extraction from IHEP accelerator using bent crystals

Afonin

Baranov

Biryukov

et al. 2005

Nuclear Instruments and Methods in Physics Research Section B:

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Abstract. IHEP Protvino has pioneered the wide practical use of bent crystals as optical elements in high-energy beams for beam extraction and deflection on permanent basis since 1989. In the course of IHEP experiments, crystal channeling has been developed into efficient instrument for particle steering at accelerators, working in predictable, reliable manner with beams of very high intensity over years. Crystal systems extract 70 GeV protons from IHEP main ring with efficiency of 85% at intensity of 10 12 , basing on multi-pass mechanism of channeling proposed theoretically and realised experimentally at IHEP. Today, six locations on the IHEP 70-GeV main ring of the accelerator facility are equipped by crystal extraction systems, serving mostly for routine applications rather than for research and allowing a simultaneous run of several particle physics experiments, thus significantly enriching the IHEP physics program. The long successful history of large-scale crystal exploitation at IHEP should help to incorporate channeling crystals into accelerator systems worldwide in order to create unique systems for beam delivery. We report recent results from the research and exploitation of crystal extraction systems at IHEP.

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Section: Introductionmentioning

confidence: 67%

The schemes of proton extraction from IHEP accelerator using bent crystals

Afonin

Baranov

Biryukov

et al. 2005

Nuclear Instruments and Methods in Physics Research Section B:

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“…We define the efficiency to be the ratio of the number of protons extracted into the abort line to the total number lost from the machine. At the CERN SPS, this efficiency has been measured to bẽ 10% at 120 GeV [7]. The most detailed simulation of the Tevatron experiment by Biryukov [8] predicts an efficiency of about 36%.…”

Section: Future Goalsmentioning

confidence: 99%

“…However, at the Tevatron, the only feasible location for the crystal has a dispersion which is too small for this technique to be effective. Therefore, we will perturb the transverse phase space with noise on a horizontal damper, as has been done at the CERN SPS [7]. This will pump beam into the halo, but it will be depleting the core as well as the edge of phase space.…”

Section: Future Goalsmentioning

confidence: 99%

First results from bent crystal extraction at the Fermilab Tevatron

Murphy

Carrigan

Chen

et al. 1996

Nuclear Instruments and Methods in Physics Research Section B:

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“…The studies of beam extraction and collimation assisted by channeling in a bent crystal have progressed well in recent decades [1][2][3][4][5][6][7][8][9][10]. The technique was applied at up to world highest energy [4,8], in good agreement with predictions [11].…”

Section: Introductionmentioning

confidence: 99%

“…[23]. The code had earlier been successfully tested in crystal extraction experiments at CERN SPS [1], Tevatron [4], RHIC [9], and IHEP U-70 [6].…”

Section: Introductionmentioning

confidence: 99%

Possibility of crystal extraction and collimation in the sub-GeV range

Bellucci

Biryukov

2007

Phys. Rev. ST Accel. Beams

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Bent crystal situated in a circulating beam can serve for efficient slow extraction or active collimation of the beams. This technique, well established at 1-1000 GeV, could be efficient also at the energies as low as 0.1-1 GeV according to the computer simulations presented in this paper. Applications might include halo scraping in the spallation neutron sources or slow extraction from medical synchrotrons.

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First results on proton extraction from the CERN-SPS with a bent crystal

Cited by 82 publications

References 9 publications

The schemes of proton extraction from IHEP accelerator using bent crystals

The schemes of proton extraction from IHEP accelerator using bent crystals

First results from bent crystal extraction at the Fermilab Tevatron

Possibility of crystal extraction and collimation in the sub-GeV range

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