Christian Piel

Performance of the saraf ion source

Since October 2006 an ECR ion source is under operation at SOREQ. The source will be used to generate protons and deuterons in a current range from 0.04 to 5 mA. The paper will present operation results as current, emittance and stability measurements. Further the influence of variables as solenoid fields, RF power and gas flow will be described. A short description of the attached beam transport system and beam diagnostic system will be given as well.

Beam operation of the saraf light ion injector

In beginning of 2007 the installation of the first stage of SARAF has been finalized. The system consists out of an ECR ion source, a low energy beam transport system, a four rod RFQ, a medium energy transport system and a superconducting module housing 6 half resonators and three superconducting solenoids. This injector will be characterized with a diagnostic plate. The installation allows continuous measurement of beam charge, position and phase. The diagnostic plate in addition provides a beam halo monitor, vertical and horizontal slit and wire systems, a slow and a fast faraday cup, which can only be used in pulsed operation. The paper will describe the status of commissioning and will show first measurement results.

RF activities on cavities and turn key accelerator systems at ACCEL

Beside the pure manufacture of normal and superconducting cavities ACCEL Instruments has continuously expanded its RF activities for worldwide customers in research and industry. Our scope includes feasibility studies on special and large scale cavity applications, review and optimisation especially on SRF modules as well as the supply of complete accelerator linacs and systems including control systems and rf supply. These projects are performed in tight co operation with leading worldwide experts, universities, and research institutes, respectively. Besides various other activities, which will be described in more detail, the most recent test results of superconducting TESLA cavities will be presented. Further the production of PEP II style cavities (476 MHz) will be described as well as the status of the fabrication of two 53 MHz copper cavities for BNLs National Synchrotron Light Source. The recent project of the 500 MHz Booster RF system for the Canadian Light Source will be introduced.

A 0.5 TO 50 MeV electron linear accelerator system

Since 1998 ACCEL delivers turn key accelerator for scientific applications. After three injector systems for synchrotron light sources have been successfully commissioned, ACCEL is currently producing a 0.5 to 50 MeV system for the German metrological institute in Braunschweig (PTB). Beside excellent beam energy qualities the accelerator has to operate in a wide energy range, delivering 1 to 100 W average beam power to the target. The paper will give a description of the system layout and related technical parameters. The status of the project and results of the factory acceptance test of some of the major components will be presented as well.

The SSRF booster cavity system

In February 2007 a system consisting out of two 5 cell 500 MHz cavities has been delivered to SSRF to accelerate the electrons in their booster ring. The two cavities are controlled by one low level RF system, which forms part of the delivery. The paper will describe the general layout of the booster RF system and the architecture of the low level RF system controlling one amplifier and two cavities. Results of the commissioning phase will be presented and compared with expected and guaranteed values of the system.

Series production of copper and niobium cavities for the Spallation Neutron Source

Over the last one and a half years, ACCEL has been working on two large scale cavity series production - the normal conducting CCL type copper cavities and all superconducting 6-cell cavities for the linac of the Spallation Neutron Source SNS. For both projects, the prototype phase is finished and we are in the middle of the series production. Tuning results on the normal conducting cavities will be presented as well as the cold RF test results of the superconducting medium beta cavity production. Experiences gained for future large scale cavity production will be presented.