DIPAC2011 - List of Authors (Joly, B.)

Paper	Title	Page
MOPD64	High Quality Measurements of Beam Lifetime, Instant-Partial-Beam Losses and Charge-Accumulation with the New ESRF BPM System	194
	K.B. Scheidt, F. Ewald, B. Joly ESRF, Grenoble, France
	The BPM system of the ESRF Storage Ring, that was entirely replaced by 224 units of the Libera-Brilliance system in 2009, is now also being used for precise and fast measurements of the Beam Lifetime and so-called Instant-Partial-BeamLosses. This is possible by the use of the Sum signal of the four BPM buttons on each of the 224 BPM stations in the Ring. This paper will describe the strong advantages in terms of response time, but also the precautions and the limitations of this particular use. Results will show the ultimate attainable performances and a detailed comparison with that of three independent DC current transformers also installed in the Ring. The same Sum signal is also usable for precise measurement of Accumulated Charge during the injection process and results of this will also be presented.

MOPD92	Review of Recent Upgrades & Modernizations on Diagnostics in the ESRF Storage Ring and Injector	263
	B. Joly, P. Arnoux, D. Robinson, K.B. Scheidt ESRF, Grenoble, France
	Over the last two years a number of upgrades and modernizations have been implemented on diagnostic tools in both the Injector system and the Storage Ring. Brand new diagnostic tools have also been added. In the Injector, a new Transfer Line current monitor has been installed, as well as four new ¼ λ Striplines equipped with Single-Pass Libera electronics. In the Storage Ring, a new Visible Light Mirror (VLM) system has replaced the original system that had been in place for more than 15 years. Also, the acquisition system for the DC Current Transformers has been upgraded with new hardware. Descriptions and results are presented on the improved reliability, sensitivity and resolution of these systems.

Paper

Title

Page

High Quality Measurements of Beam Lifetime, Instant-Partial-Beam Losses and Charge-Accumulation with the New ESRF BPM System

194

K.B. Scheidt, F. Ewald, B. Joly
ESRF, Grenoble, France

The BPM system of the ESRF Storage Ring, that was entirely replaced by 224 units of the Libera-Brilliance system in 2009, is now also being used for precise and fast measurements of the Beam Lifetime and so-called Instant-Partial-BeamLosses. This is possible by the use of the Sum signal of the four BPM buttons on each of the 224 BPM stations in the Ring. This paper will describe the strong advantages in terms of response time, but also the precautions and the limitations of this particular use. Results will show the ultimate attainable performances and a detailed comparison with that of three independent DC current transformers also installed in the Ring. The same Sum signal is also usable for precise measurement of Accumulated Charge during the injection process and results of this will also be presented.

MOPD92

Review of Recent Upgrades & Modernizations on Diagnostics in the ESRF Storage Ring and Injector

263

B. Joly, P. Arnoux, D. Robinson, K.B. Scheidt
ESRF, Grenoble, France

Over the last two years a number of upgrades and modernizations have been implemented on diagnostic tools in both the Injector system and the Storage Ring. Brand new diagnostic tools have also been added. In the Injector, a new Transfer Line current monitor has been installed, as well as four new ¼ λ Striplines equipped with Single-Pass Libera electronics. In the Storage Ring, a new Visible Light Mirror (VLM) system has replaced the original system that had been in place for more than 15 years. Also, the acquisition system for the DC Current Transformers has been upgraded with new hardware. Descriptions and results are presented on the improved reliability, sensitivity and resolution of these systems.