Accelerator

Ion Source

The accelerator at ESS-Bilbao is intended to use an Electron Cyclotron Resonance (ECR) H+ source. The production of positively charged hydrogen ions is far simpler than that of negatively charged ones, since there is no need to add electron donors. ECR sources are relatively simple, especially when compared to Penning sources, they can be turned on almost instantaneously and have shown a long lifetime. The extraction system intrinsically determines the…

LEBT

The role of the LEBT, placed between the ion source and the RFQ, is to match the beam characteristics to the RFQ input specification. The proposed magnetic Low Energy Transport System (LEBT) consists of two solenoids placed at fixed positions, producing tuneable magnetic fields which are used to match the characteristics of the beam to those imposed by the RFQ input specification. In order to improve RFQ performance LEBT Beam…

RFQ

The RFQ (Radio Frequency Quadrupole) is an Accelerating Structure used as the first accelerating stage or in the injector of many proton and ion accelerators. This device has a length of several meters and typically accelerates particles from the range of tens of keV to several MeV per nucleon. These devices fulfill three tasks in an accelerator in just one device: it accelerates particles, keep them focused as they travel…

MEBT

The considered versatile ESS MEBT is being designed to achieve four main goals: First, to contain a fast chopper and its correspondent beam dump, that could serve in the commissioning as well as in the ramp up phases. Second, to serve as a halo scraping section by means of various adjustable blades. Third, to measure the beam phase and profile between the RFQ and the DTL, along with other beam…

RF System

RF systems are esential along the modern linear accelerators. Different stages should be taken into account: Generation of the high power RF, its amplification, distribution and coupling to the different resonant cavities, such us: RFQ, Buncher cavities (ESS MEBT) and DTL (ESS DTL), in order to guarantee optimum conditions. A high power test stand at 352.2 MHz (3 MW peak) will provide support in the following areas: - Characterization and…

Control

Successful operation of a large scientific facilities as a particle accelerator requires complex system for control, monitorization and management of information in a safe mode. Control network systems integrates all subsytems and signals involved in the accelerator for monitoring, data acquisition and operational requirements. The integration is based on an EPICS control system. This part involves also the development of the security in the control network to ensure a reliable…

Beam Diagnostics

Different Diagnostics systems are being designed and built to characterize the beam. Among others Beam position monitors (BPMs), SEM Grid, Wien Filter, Faraday Cup, Retarding Potential Analyzer and Non-interceptive devices. Including Thermo-mechanical analysis, EPICS integration and development of acquisition electronics, laboratory tests and calibrations. Diagnostics placed on the Low Energy Beam Transport (LEBT) are an essential tool for measuring the performance of the H+ ion sources. This is a key…