Channeling 2023

Session

S1 & S4: Beams Interactions & New Concepts

9 Jun 2023, 09:00

Hotel Corallo, Riccione

Conveners

S1 & S4: Beams Interactions & New Concepts: Session 1.4 & 4.4

• Pavel Karataev (Royal Holloway, Unviersity of London)

79. Considerations toward a Compact Coherent Light Source based \\ on a Two-Beam Acceleration Technique

Philippe Piot

09/06/2023, 09:00

invited

The demonstration of the reliable operation of an X-band radio-frequency (RF) photoinjector with fields $\sim 0.4$~GV/m [1] on a photocathode provides a pathway to bright electron bunches. This success was enabled by powering the RF gun with short RF pulses thereby mitigating breakdowns and dark-current generation. The ~300-MW RF pulses were generated by decelerating a high-charge relativistic...

81. SPHINX: Structure Probing by Holographic Imaging at Nanometer scale with X-ray lasers

Mihail Antoniu Iliescu

09/06/2023, 09:30

oral

The SPHINX project aims building an ultrafast X-ray holographic camera able to record images of microscopic samples and of their internal parts with nanometer resolution. The application is based on a new implementation of the phase-contrast holography that overcomes the main limitations encountered in the current systems (mostly based on absorption-contrast), namely the low energy range, the...

86. Adiabatic Invariants at Channeling in a Curved Crystal

Nikolay Kalashnikov

09/06/2023, 09:50

oral

The channeling effect in a curved single crystal is considered. In an accompanying reference frame moving along a plane or channeling axis at a speed equal to the longitudinal component of the electron velocity, such motion is essentially an implementation of the model of a one-dimensional 1D atom or a two-dimensional 2D atom, and with controllable parameters. The depth and shape of the...

87. Simulations of crystal collimation processes for 6.8 Z TeV lead ion beams at the LHC

Rongrong Cai

09/06/2023, 10:10

oral

In future heavy-ion runs of the Large Hadron Collider (LHC), the stored beam energy is planned to increase and reach values above 20 MJ. This requires improving the performance of the betatron collimation system. The solution found is to use crystal channeling to reduce nuclear fragmentation and guide halo particles safely to an absorber. Crystal collimation is part of the HL-LHC baseline and...

32. Feasibility of using the crystal channeling to reduce the beam losses in Slow Extraction at 8GeV

Vladimir Nagaslaev

09/06/2023, 10:30

poster

The mitigation of the beam losses in slow extraction is becoming more and more demanding in accelerator applications for HEP as the beam power is gradually increasing. The successful demonstration of using the proton beam channeling at 450GeV to deflect the beam away from the extraction septa opens the new levels of improving the slow extraction efficiency.
It is yet to be demonstrated that...

24. Bent crystal extraction from DAΦNE storage rings: the SHERPA experiment

Marco Garattini

09/06/2023, 10:50

oral

The SHERPA (“Slow High-efficiency Extraction from Ring Positron Accelerator”) project aim is to develop an efficient technique to extract a positron beam from one of the accelerator rings composing the DAΦNE accelerator complex at the Frascati National Laboratory of INFN, setting up a new beam line able to deliver positron spills of O(ms) length, excellent beam energy spread and...

56. Half-Wavelength-Crystal Channeling of Relativistic Ions and its Possible Application for Beam Deflection and Focusing

Timur Tukhfatullin

09/06/2023, 11:10

oral

The phenomenon of Half-Wavelength Crystal (HWC) channeling, where a particle experiences "mirroring" due to a single collision with a crystallographic plane, has been observed for protons and electrons. While the HWC channeling phenomenon has been observed for 400 GeV protons at CERN-SPS [1] and for 255-MeV electrons at the SAGA-LS Facility [2, 3], there are additional parameters that arise in...