نتایج جستجو برای: commissioning beam
تعداد نتایج: 116791 فیلتر نتایج به سال:
The high charge state injector (HLI) at the UNILAC provides beams mainly for the super heavy element research (SHIP, TASCA). It comprises an ECR ion source, a radio frequency quadrupole (RFQ), an IH structure and two bunchers [1]. High average beam intensities of rare isotopes are the domain of the HLI. An upgrade program, aimed at increased beam intensity, quality and duty cycle, was started i...
In this Letter we report the first experimental observation of the double emittance minimum effect in the beam dynamics of high-brightness electron beam generation by photoinjectors; this effect, as predicted by the theory, is crucial in achieving minimum emittance in photoinjectors aiming at producing electron beams for short wavelength single-pass free electron lasers. The experiment describe...
Using the base experimental equipment for Hall A, and beam energies of 6.6, 8.8, and 11 GeV, we propose to measure the proton elastic cross section to a statistical precision of better than 1% over a Q2 range of 7–17.5 GeV2. A few items of general purpose instrumentation are proposed to ensure that the total uncertainty will be below 2%. The resulting measurement will provide means for extracti...
The SLAC Linear Collider has been designed to readily accomodate polarized electron beams. Considerable effort has been made to implement a polarized source, a spin rotation system, and a system to monitor the beam polarization. Nearly all major components have been fabricated. At the current time, severa1 source and polarimeter components have been installed. The installation and commissioning...
Introduction: Intraoperative radiotherapy is a radiotherapy technique in which a high single fraction of radiation dose is delivered to the patient after surgery and Concurrent with anesthesia time. The most frequent method for IORT implementation is Intraoperative electron radiotherapy (IOERT), in which, some dedicated and high dose per pulse electron accelerators are employe...
Implementation and commissioning of the EPICS based control system for the ISAC radioactive beam facility was completed. The target ion source, mass separator, and low-energy beam-lines started beam production for experiments. In parallel, controls for the accelerator system, a radio-frequency quadrupole followed by a drift-tube linac, and several high-energy beam-lines were implemented and com...
ilbstract Today, numerous simulation and analysis codes esist for the design, commission, and operation of accelerat.or beam lines. There is a need to develop a common user interfa.ce and database link to run these codes int.eractively. This paper will describe a proposed syst.em, GLAD (Generic LAt.tice Debugger), to fulfill this need. Specifically, GLAD can be used t.o find errors in beam line...
The Taiwan Photon Source (TPS) is a 3 GeV synchrotron light source being built at the campus of NSRRC. Designs of various diagnostics are under way, and will be deployed in the future, to satisfy stringent requirements of TPS for commissioning, top-up injection, and operation. These designs, including beam intensity observation, trajectory and beam positions measurement, destructive profile mea...
PURPOSE The implementation of an accurate beam model is an integral part of the commissioning of any planning system. This process is especially challenging in the case of IMRT beam models owing to the complexity of small field sizes and MLC leaf-end and tongue-and-groove effects. The question of how to judge the quality of an IMRT beam model in comparison with other versions of the same model ...
Brookhaven is undertaking the design, construction and commissioning of the accumulator ring and the beam transport lines for the 1-GeV Spallation Neutron Source. The operating pressure of the accumulator ring vacuum system will be 10 Torr and is needed to minimize the beam-residual gas ionization. The vacuum requirement, the layout of the ring vacuum system, and the design of the vacuum chambe...
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