High-efficiency volume reflection of an ultrarelativistic proton beam with a bent silicon crystal.

نویسندگان

  • Walter Scandale
  • Dean A Still
  • Alberto Carnera
  • Gianantonio Della Mea
  • Davide De Salvador
  • Riccardo Milan
  • Alberto Vomiero
  • Stefano Baricordi
  • Pietro Dalpiaz
  • Massimiliano Fiorini
  • Vincenzo Guidi
  • Giuliano Martinelli
  • Andrea Mazzolari
  • Emiliano Milan
  • Giovanni Ambrosi
  • Philipp Azzarello
  • Roberto Battiston
  • Bruna Bertucci
  • William J Burger
  • Maria Ionica
  • Paolo Zuccon
  • Gianluca Cavoto
  • Roberta Santacesaria
  • Paolo Valente
  • Erik Vallazza
  • Alexander G Afonin
  • Vladimir T Baranov
  • Yury A Chesnokov
  • Vladilen I Kotov
  • Vladimir A Maisheev
  • Igor A Yaznin
  • Sergey V Afansiev
  • Alexander D Kovalenko
  • Alexander M Taratin
  • Alexander S Denisov
  • Yury A Gavrikov
  • Yuri M Ivanov
  • Vladimir G Ivochkin
  • Sergey V Kosyanenko
  • Anatoli A Petrunin
  • Vyacheslav V Skorobogatov
  • Vsevolod M Suvorov
  • Davide Bolognini
  • Luca Foggetta
  • Said Hasan
  • Michela Prest
چکیده

The volume reflection phenomenon was detected while investigating 400 GeV proton interactions with bent silicon crystals in the external beam H8 of the CERN Super Proton Synchrotron. Such a process was observed for a wide interval of crystal orientations relative to the beam axis, and its efficiency exceeds 95%, thereby surpassing any previously observed value. These observations suggest new perspectives for the manipulation of high-energy beams, e.g., for collimation and extraction in new-generation hadron colliders, such as the CERN Large Hadron Collider.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

On Volume Reflection of Ultrarelativistic Particles in Single Crystals

The analytical description of the volume reflection of the charged ultrarelativistic particles in bent single crystals is considered. The relation describing the angle of volume reflection as a function of the transversal energy is obtained. The different angle distributions of the scattered protons in the single crystals are found. Results of calculations for 400 GeV protons scattered by the s...

متن کامل

Volume Capture and Volume Reflection of Ultrarelativistic Particles in Bent Single Crystals

Influence of volume capture on a process of volume reflection of ultrarelativistic particles moving in bent single crystals was considered analytically. Relations describing various distributions of particles involving in the process, the probability of volume capture and behavior of channeling and dechanneling fractions of a beam were obtained. Results of study will be useful at creation of mu...

متن کامل

Deflection of MeV protons by an unbent half-wavelength silicon crystal.

The interaction of a 2 MeV proton beam with an ultrathin unbent Si crystal was studied through simulation and experiment. Crystal thickness along the beam was set at 92 nm, i.e., at half the oscillation wavelength of the protons in the crystal under planar channeling condition. As the nominal beam direction is inclined by less than the critical angle for planar channeling with respect to the cr...

متن کامل

Deflection and Extraction of Pb Ions up to 33 TeVyc by a Bent Silicon Crystal

P. Keppler and J. Major MPI für Metallforschung, Stuttgart, Germany (Received 15 July 1997) The first results from an experiment to deflect a beam of fully stripped, ultrarelativistic Pb821 ions of 400 GeVyc per unit of charge, equivalent to 33 TeVyc, by means of a bent crystal are reported. Deflection efficiencies are as high as 14%, in agreement with theoretical estimates. In a second experim...

متن کامل

Multiple Volume Reflection from Different Planes Inside One Bent Crystal

It is shown that multiple volume reflections from different planes of one bent crystal becomes possible when particles move at a small angle with respect to a crystal axis. Such a Multiple Volume Reflection makes it possible to increase the particle deflection angle inside one crystal by more than four times and can be used to increase the efficiency of beam extraction and collimation at the LH...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Physical review letters

دوره 98 15  شماره 

صفحات  -

تاریخ انتشار 2007