High-accuracy diagnostic tool for electron cloud observation in the LHC based on synchronous phase measurements
نویسندگان
چکیده
منابع مشابه
Electron Cloud Instability Simulations for the LHC
We present results of simulations of transverse single bunch instabilities for the LHC and LHC Upgrade scenarios and in particular first results with electron cloud in the dipole regions. The possibility to use the code HEADTAIL below the threshold of the fast instability is under study and we here discuss a possible way to distinguish numerical noise from true physics.
متن کاملthe comparative impact of prompts and recasts in processing instruction versus meaningful output-based instruction on efl learners’ writing accuracy
the purpose of the present study was to see which one of the two instruction-processing instruction (pi) and meaningful output based instruction (mobi) accompanied with prompt and recast- is more effective on efl learners’ writing accuracy. in order to homogenize the participants in term of language proficiency a preliminary english test (pet) was administrated between 74 intermediate students ...
High Energy High Intensity Hadron Beams KILLING THE ELECTRON CLOUD EFFECT IN THE LHC ARCS
A getter/electrode assembly has been devised to suppress the regeneration mechanism of the electron cloud effect in the arc dipoles of LHC. The assembly consists of a copper foil electrode, supported through an insulating layer on a stainless steel skid, which would rest upon the flat bottom of the beam screen. The electrode is coated with NEG to provide effective pumping of all non-inert gases...
متن کاملThe Critical-Care Pain Observation Tool: A useful tool for pain assessment in intensive care units
Pain is a major concern in all intensive care units (ICUs). The proper assessment and management of pain is one of the main goals of patient care in ICUs. Improper evaluation of pain and its over or under treatment can cause significant problems in the process of patient management in ICU. Since most ICU patients are unable to communicate correctly with the ICU team and explain their level of p...
متن کاملDiagnostics for Electron Cloud Measurements in CESR
Clouds of low energy electrons frequently build up within the beam chambers of particle accelerators. In many cases, electron cloud effects (ECEs) cause beam instabilities and degradation of performance. This is of particular concern for high intensity positron rings, in which ECEs can lead to emittance blow-up. Understanding and mitigating electron cloud build up is thus of particular importan...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Special Topics - Accelerators and Beams
سال: 2015
ISSN: 1098-4402
DOI: 10.1103/physrevstab.18.112801