1.
|
Crystal for slow extraction loss-reduction of the SPS electrostatic septum
/ Esposito, Luigi Salvatore (CERN) ; Addesa, Francesca (INFN, Rome) ; Afonin, Alexander (Serpukhov, IHEP) ; Bestman, Patrick (CERN) ; Borg, Johan (Imperial Coll., London) ; Butcher, Mark (CERN) ; Calviani, Marco (CERN) ; Chesnokov, Yuri (Serpukhov, IHEP) ; Denisov, Alexander (St. Petersburg, INP) ; Di Castro, Mario (CERN) et al.
The use of a bent crystal was investigated in order to reduce the losses at the CERN Super Proton Synchrotron (SPS) electrostatic septum (ZS) during the slow extraction of 400 GeV/c protons toward the North Area. The crystal, installed a few meters upstream of the ZS, bends protons that would otherwise impinge on the ZS wires. [...]
CERN-ACC-2019-179.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-WEPMP028
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPMP028
|
|
2.
|
Demonstration of loss reduction using a thin bent crystal to shadow an electrostatic septum during resonant slow extraction
/ Velotti, Francesco (CERN) ; Addesa, Francesca (INFN, Rome) ; Afonin, Alexander (Serpukhov, IHEP) ; Bestmann, Patrick (CERN) ; Borg, Johan (Imperial Coll., London) ; Butcher, Mark (CERN) ; Calviani, Marco (CERN) ; Chesnokov, Yuri (Serpukhov, IHEP) ; Denisov, Alexander (St. Petersburg, INP) ; Di Castro, Mario (CERN) et al.
A proof-of-principle experiment demonstrating the feasibility of using a thin, bent crystal aligned upstream of an extraction septum (ES) to increase the efficiency of the third-integer resonant slow extraction process has been carried out at the CERN Super Proton Synchrotron (SPS). With the primary aim of reducing the beam loss and induced radio-activation of the SPS, the crystal was aligned to both the beam and the septum to reduce by up to 40% the beam intensity impinging the ES and increase the intensity entering the external transfer line. [...]
CERN-ACC-2019-218.-
2019 - 5 p.
- Published in : 10.18429/JACoW-IPAC2019-THXXPLM2
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.THXXPLM2
|
|
3.
|
Manipulation of Negatively Charged Beams via Coherent Effects in Bent Crystals
/ Scandale, Walter (CERN) ; Guidi, Vincenzo (INFN, Ferrara) ; Bagli, Enrico (INFN, Ferrara) ; Mazzolari, Andrea (INFN, Ferrara) ; Afonin, Alexander (Serpukhov, IHEP) ; Chesnokov, Yuri (Serpukhov, IHEP) ; Maisheev, Vladimir (Serpukhov, IHEP) ; Yazynin, Igor (Serpukhov, IHEP) ; Baricordi, Stefano (Ferrara U.) ; Dalpiaz, Pietro (Ferrara U.) et al.
We review the experimental evidences we recorded with volume reflection and planar and axial channelings with negatively charged particles beam. High deflection efficiency was observed in all cases [...]
2010
External link: Published version from JACoW
In : 1st International Particle Accelerator Conference, Kyoto, Japan, 23 - 28 May 2010, pp.THPD052
|
|
4.
|
The UA9 setup for the double-crystal experiment in CERN-SPS
/ CERN UA 009 collaboration
Experiments to measure the electric and the magnetic moments of short-lived baryons using an internal target and two bent crystals in the vicinity of one of the existing LHC detectors were recently proposed, in the frame of the Physics Beyond Colliders Working Group at CERN. Investigating fixed-target physics in the LHC with in-vacuum solid targets is an unprecedented challenge. [...]
CERN-PBC-Notes-2021-022.-
2020 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 975 (2020) 164175
|
|
5.
|
Multiple scattering of positively charged particles moving near the (111) plane in a silicon single crystal
/ Scandale, W (Imperial Coll., London) ; Cerutti, F (CERN) ; Esposito, L S (CERN) ; Garattini, M (CERN) ; Gilardoni, S (CERN) ; Losito, R (CERN) ; Masi, A (CERN) ; Mirarchi, D (CERN) ; Redaelli, S (CERN) ; Smirnov, G (CERN) et al.
The article is devoted to the study of the suppression of multiple scattering of positively charged particles with momenta of 180 GeV/c and 400 GeV/c passing through bent single crystals of silicon at small angles to the plane (111) both in channeling mode and in the above-barrier state. For the first time, the suppression of the effect of multiple scattering of non-channeling particles passing at a small angle to one of the planes of a silicon single crystal was observed. [...]
Germany : Springer Nature, 2024 - 6 p.
- Published in : Eur. Phys. J. Plus 139 (2024) 1041
|
|
6.
|
Observation of channeling in bent crystals at the CERN LHC
/ Rossi, Roberto (CERN ; INFN, Rome ; U. Rome La Sapienza (main)) ; Scandale, Walter (CERN) ; Arduini, Gianluigi (CERN) ; Butcher, Mark (CERN) ; Cerutti, Francesco (CERN) ; Garattini, Marco (CERN) ; Gilardoni, Simone (CERN) ; Lechner, Anton (CERN) ; Losito, Roberto (CERN) ; Masi, Alessandro (CERN) et al.
SISSA, 2016 - 4 p.
- Published in : PoS ICHEP2016 (2016) 867
PoS Open Access Article: PDF; External link: PoS server
In : 38th International Conference on High Energy Physics, Chicago, IL, USA, 03 - 10 Aug 2016, pp.867
|
|
7.
|
Comprehensive study of beam focusing by crystal devices
/ Scandale, W (CERN) ; Arduini, G (CERN) ; Cerutti, F (CERN) ; Garattini, M (CERN) ; Gilardoni, S (CERN) ; Masi, A (CERN) ; Mirarchi, D (CERN) ; Montesano, S (CERN) ; Petrucci, S (CERN) ; Redaelli, S (CERN) et al.
This paper is devoted to an experimental study of focusing and defocusing positively charged particle beams with the help of specially bent single crystals. Four crystals have been fabricated for this purpose. [...]
2018 - 11 p.
- Published in : Phys. Rev. Accel. Beams 21 (2018) 014702
Fulltext: PDF;
|
|
8.
|
|
|
Multiple volume reflections of high-energy protons in a sequence of bent silicon crystals assisted by volume capture
/ Scandale, W (CERN) ; Vomiero, A (INFM, Brescia) ; Bagli, E (INFN, Ferrara ; Ferrara U.) ; Baricordi, S (INFN, Ferrara ; Ferrara U.) ; Dalpiaz, P (INFN, Ferrara ; Ferrara U.) ; Fiorini, M (INFN, Ferrara ; Ferrara U.) ; Guidi, V (INFN, Ferrara ; Ferrara U.) ; Mazzolari, A (INFN, Ferrara ; Ferrara U.) ; Vincenzi, D (INFN, Ferrara ; Ferrara U.) ; Milan, R (INFN, Legnaro) et al.
2010 - 5 p.
- Published in : Phys. Lett. B 688 (2010) 284-288
|
|
9.
|
High-efficiency deflection of high energy protons due to channeling along the 〈110〉 axis of a bent silicon crystal
/ Scandale, W (CERN ; Orsay, LAL ; INFN, Rome) ; Arduini, G (CERN) ; Butcher, M (CERN) ; Cerutti, F (CERN) ; Garattini, M (CERN) ; Gilardoni, S (CERN) ; Lechner, A (CERN) ; Masi, A (CERN) ; Mirarchi, D (CERN) ; Montesano, S (CERN) et al.
A deflection efficiency of about 61% was observed for 400 GeV/c protons due to channeling, most strongly along the 〈110〉 axis of a bent silicon crystal. It is comparable with the deflection efficiency in planar channeling and considerably larger than in the case of the 〈111〉 axis. [...]
2016 - 6 p.
- Published in : Phys. Lett. B 760 (2016) 826-831
Elsevier Open Access article: PDF;
|
|
10.
|
|
|
Probability of inelastic nuclear interactions of high-energy protons in a bent crystal
/ Scandale, W (CERN) ; Losito, R (CERN) ; Silari, M (CERN) ; Bagli, E (INFN, Ferrara ; Ferrara U.) ; Baricordi, S (INFN, Ferrara ; Ferrara U.) ; Dalpiaz, P (INFN, Ferrara ; Ferrara U.) ; Fiorini, M (INFN, Ferrara ; Ferrara U.) ; Guidi, V (INFN, Ferrara ; Ferrara U.) ; Mazzolari, A (INFN, Ferrara ; Ferrara U.) ; Vincenzi, D (INFN, Ferrara ; Ferrara U.) et al.
2010 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 268 (2010) 2655-2659
|
|