Zobrazeno 1 - 10
of 2 009
pro vyhledávání: '"Andonian, A."'
We present an experimental demonstration of a single-shot, non-destructive electron beam diagnostic based on the ionization of a low-density pulsed gas jet. In our study, 7~MeV electron bunches from a radio frequency (RF) photoinjector, carrying up t
Externí odkaz:
http://arxiv.org/abs/2411.15460
Autor:
Majernik, N., Andonian, G., Parrack, A., Rosenzweig, J. B., Doran, S., Wisniewski, E., Power, J.
We introduce a new style of multileaf collimator which employs rotors with angularly dependent radius to control the masking aperture: a rotor-based multileaf collimator (RMLC). Using a padlock-inspired mechanism, a single motor can set dozens of rot
Externí odkaz:
http://arxiv.org/abs/2410.06413
Autor:
Yadav, M., Oruganti, M. H., Naranjo, B., Andonian, G., Apsimon, Ö., Welsch, C. P., Rosenzweig, J. B.
Photons emitted from high-energy electron beam interactions with high-field systems, such as the upcoming FACET-II experiments at SLAC National Accelerator Laboratory, may provide deep insight into the electron beam's underlying dynamics at the inter
Externí odkaz:
http://arxiv.org/abs/2409.02113
In the underdense (blowout) regime of plasma wakefield acceleration (PWFA), the particle beam is denser than the plasma. Under these conditions, the plasma electrons are nearly completely rarefacted from the beam channel, resulting in a nominally uni
Externí odkaz:
http://arxiv.org/abs/2406.02719
Autor:
Lynn, Walter, Xu, Tianzhe, Andonian, Gerard, Doran, Scott, Ha, Gwanghui, Majernik, Nathan, Piot, Philippe, Power, John, Rosenzweig, James, Whiteford, Charles, Wisniewski, Eric
Relativistic charged-particle beams which generate intense longitudinal fields in accelerating structures also inherently couple to transverse modes. The effects of this coupling may lead to beam break-up instability, and thus must be countered to pr
Externí odkaz:
http://arxiv.org/abs/2308.09137
A single-shot method to reconstruct the transverse self-wakefields acting on a beam, based only on screen images, is introduced. By employing numerical optimization with certain approximations, a relatively high-dimensional parameter space is efficie
Externí odkaz:
http://arxiv.org/abs/2306.05632
Autor:
Manwani, Pratik, Majernik, Nathan, Mann, Joshua, Kang, Yunbo, Chow, Derek, Ancelin, Havyn, Andonian, Gerard, Rosenzweig, James
Particle beams with highly asymmetric emittance ratios are expected at the interaction point of high energy colliders. These asymmetric beams can be used to drive high gradient wakefields in dielectrics and plasma. In the case of plasma, the high asp
Externí odkaz:
http://arxiv.org/abs/2305.01902
Autor:
Arandjelović, Relja, Andonian, Alex, Mensch, Arthur, Hénaff, Olivier J., Alayrac, Jean-Baptiste, Zisserman, Andrew
The core problem in zero-shot open vocabulary detection is how to align visual and text features, so that the detector performs well on unseen classes. Previous approaches train the feature pyramid and detection head from scratch, which breaks the vi
Externí odkaz:
http://arxiv.org/abs/2303.13518
Autor:
Yadav, M., Hansel, C., Naranjo, B., Andonian, G., Manwani, P., Apsimon, O., Welsch, C. P., Rosenzweig, J. B.
The characterization of plasma wakefield acceleration experiments using emitted photons from betatron radiation requires numerical models in support of instrumentation of single-shot, double-differential angular-energy spectra. Precision characteriza
Externí odkaz:
http://arxiv.org/abs/2303.04213
Recent work has shown exciting promise in updating large language models with new memories, so as to replace obsolete information or add specialized knowledge. However, this line of work is predominantly limited to updating single associations. We de
Externí odkaz:
http://arxiv.org/abs/2210.07229