Channeling 2014

Session

S6: Crystal Simultaion Routines for Particle Accelerators : Comparison and Benchmarking with Experimental Data

Oct 10, 2014, 11:30 AM

Capri-Naples, Italy

Conveners

S6: Crystal Simultaion Routines for Particle Accelerators : Comparison and Benchmarking with Experimental Data

• Walter Scandale (ROMA1)

Description

Session 6.2

185. ICOSIM++: a Simulation Tool for Crystal Aided Collimation Experiments

Theo Demma

10/10/14, 11:30 AM

Oral

UA9 is the crystal-assisted collimation experiment at CERN. In the SPS this experiment successfully demonstrated that bent crystals can work as “smart deflectors” on primary halo particles. The final goal is to use this technique for LHC collimation. A prototype of crystal aided collimation system was installed in the LHC in March 2014. To understand thoroughly the experimental data, and to...

56. Quasi-mosaic Silicon Crystal Deflectors for LHC Beams (on behalf of UA9 Collaboration)

Dr Yury Ivanov (Petersburg Nuclear Physics Institute)

10/10/14, 11:50 AM

Oral

In 2013-2014, the advanced quasi-mosaic silicon crystal deflectors for UA9/LUA9 Collimation Project were developed and installed in LHC ring. The design of deflectors is based on elastic quasi-mosaicity effect firstly discovered in quartz [1] and later observed in silicon [2]. This effect arises from anisotropic properties of crystal lattice and results in the curving of the normal cross...

172. High Precision Piezo Goniometer for LHC Crystal Experiment

Dr Alessandro Masi (CERN)

10/10/14, 12:10 PM

Oral

An innovative piezo goniometer that fully fulfils all the requirements for the channeling experiment in the LHC is presented. The piezo rotational stage is based on a specifically designed flexural structure with closed loop position control using a high accuracy interferometric angular sensor. The design guidelines as well as the experimental validation results are also presented.

63. CRYSTAL Simulation Code and New Coherent Effects in Bent Crystal at the LHC

Mr Alexei Sytov (Research Institute for Nuclear Problems)

10/10/14, 12:30 PM

Oral

Both long-lasting UA9 studies and coming Large Hadron Collider collimation and extraction experiments strengthen the need to develop reliable codes for the modelling of the proton interaction with bent crystals. A CRYSTAL simulation code [1] for particle tracking in crystal is introduced. Its essence consists in both adequate and fast evaluation of proton trajectories in crystals with all...

129. Deflection of Positively Charged Heavy Particles by the Crystal Miscut Surface

Anton Babaev (LNF)

10/10/14, 12:50 PM

Oral

Let consider the beam of high-energy heavy particles (protons, ions or nuclei) propagates along crystal surface. Let suppose simultaneously the planar channeling conditions [1] are fulfilled for some crystallographic planes and these planes are forming the small angle with the crystal surface. This angle is namely so-called miscut angle [2]. It was shown the averaged potential approximation...

48. Development and Test of Germanium Bent Crystals for Channeling Applications.

Dr Davide De Salvador (INFN-LNL and Padova University)

10/10/14, 1:10 PM

Oral

Most of the experimental knowledge about channeling and related phenomena in bent crystals has been gathered with Si, thanks to its high crystalline quality and mature micro-machining technology. Silicon is not optimized as a far as it concerns the interaction strength with beams since of it’s relatively low z-number. We recently demonstrated that germanium can be a concrete alternative. It is...

233. Discussion on "Crystal Simulation Routines for Particles Accelerators: Comparison Benchmarking with Experimental Data"

Francesca Galluccio (NA)

10/10/14, 1:30 PM