Deflection of high energy protons by multiple volume reflections in a modified multi-strip silicon deflector

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:338

Article

Scandale, W.^1,2,5  Arduini, G.¹  Butcher, M.¹  Cerutti, F.¹  Gilardoni, S.¹  Lari, L.^1,12  Lechner, A.¹  Losito, R.¹  Masi, A.¹  Mereghetti, A.¹  Metral, E.¹  Mirarchi, D.^1,10  Montesano, S.¹  Redaelli, S.¹  Schoofs, P.¹  Smirnov, G.¹  Bagli, E.³  Bandiera, L.³  Baricordi, S.³  Dalpiaz, P.³  Guidi, V.³  Mazzolari, A.³  Vincenzi, D.³  Claps, G.⁴  Dabagov, S.^4,13,14  Hampai, D.⁴  Murtas, F.⁴  Cavoto, G.⁵  Garattini, M.⁵  Iacoangeli, F.⁵  Ludovici, L.⁵  Santacesaria, R.⁵  Valente, P.⁵  Galluccio, F.⁶  Afonin, A. G.⁷  Chesnokov, Yu. A.⁷  Maisheev, V. A.⁷  Sandomirskiy, Yu. E.⁷  Yanovich, A. A.⁷  Yazynin, L. A.⁷  Kovalenko, Ad.⁸  Taratin, A. M.⁸  Gavrikov, Yu. A.⁹  Ivanov, Yu. M.⁹  Lapina, L. P.⁹  Ferguson, W.¹⁰  Fulcheri, J.¹⁰  Hall, G.¹⁰  Pesaresi, M.¹⁰  Raymond, M.¹⁰  Previtali, V.¹¹ 

[1] CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland

[2] Univ Paris Sud Orsay, LAL, Orsay, France

[3] Univ Ferrara, Ist Nazl Fis Nucl, Dipartimento Fis, Sez Ferrara, I-44100 Ferrara, Italy

[4] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Roma, Italy

[5] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy

[6] Ist Nazl Fis Nucl, Sez Napoli, Naples, Italy

[7] Inst High Energy Phys, RU-142284 Protvino, Russia

[8] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia

[9] Petersburg Nucl Phys Inst, Gatchina 188300, Leningrad Regio, Russia

[10] Univ London Imperial Coll Sci Technol & Med, London, England

[11] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[12] Inst Fis Corpuscular, CSIC, IFIC, Valencia, Spain

[13] PN Lebedev Phys Inst, Moscow 117924, Russia

[14] NRNU MEPhl, Moscow, Russia

关键词: Accelerator;    Beam collimation;    Crystal;    Channeling;    Volume reflection;   

DOI  :  10.1016/j.nimb.2014.08.013

来源: Elsevier

【 摘 要 】

The effect of multiple volume reflections in one crystal was observed in each of several bent silicon strips for 400 GeV/c protons. This considerably increased the particle deflections. Some particles were also deflected due to channeling in one of the subsequent strips. As a result, the incident beam was strongly spread because of opposite directions of the deflections. A modified multi-strip deflector produced by periodic grooves on the surface of a thick silicon plate was used for these measurements. This technique provides perfect mutual alignment between crystal strips. Such multi-strip deflector may be effective for collider beam halo collimation and a study is planned at the CERN SPS circulating beam. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

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