Ulrich RaichAnnual Report Preparation Meeting GSI January 2006 Progress report for Task SIS100_5 Digital Signal-Analysis Electronics for Beam Position Monitors Ulrich Raich CERN AB/BI

Ulrich RaichAnnual Report Preparation Meeting GSI January 2006 The problem Big number of Beam Position Monitors around the ring Sum and difference signals sampled at high frequency (125 MHz) asynchronous to the revolution frequency Signals numerically integrated on the fly, which needs algorithms implemented in big FPGAs –Synchronization to the bunch frequency –Generation of integration gates and baseline correction Big memories for storage of all trajectories during an acceleration cycle

Ulrich RaichAnnual Report Preparation Meeting GSI January 2006 Position calculation

Ulrich RaichAnnual Report Preparation Meeting GSI January 2006 Hardware The analogue front-end of the PS BPMs have been improved (to be capable of measuring Pb ion trajectories) A new analogue to digital converter card has been developed by ITech The Libera memory subsystem has been improved using DDRAM instead of SRAM chips Firmware is about to be implemented Milestone Hardware ready and approved: April 2006 is ok

Ulrich RaichAnnual Report Preparation Meeting GSI January 2006 Definition and test of Algorithms (1) Sum and Difference Signals are sampled from Beam Position Monitors at high sampling frequency (125 MHz) In 2004 already data have been taken at CERN and GSI using fast ADCs in a PC and using a prototype version of the future data acquisition module First versions of algorithms have been designed and implemented as offline signal treatment (C program and matlab program) The algorithms have been tested on the previously acquired data. Several deficiencies have been detected and corrected

Ulrich RaichAnnual Report Preparation Meeting GSI January 2006 Definition and test of Algorithms (2) The algorithms have been partially implemented in VHDL (this lead to the several modifications in the algorithms) Full implementation is being started now Integration with ADC and memory drivers is to be done

Ulrich RaichAnnual Report Preparation Meeting GSI January 2006 Work Force Andreas Galatis(GSI), Gregorgz Kasprowicz (CERN) PhD students (engineering) Maxim Stuckert (CERN) student (for 6 months) Kevin Lang (GSI), Jeroen Belleman (CERN) engineering Tomasz Karcnik (ITECH) engineering Andreas Peters, Ulrich Raich engineering and administration J. Dietrich Jülich, A. Zoubir (TU Darmstadt) observers + discussions

Ulrich RaichAnnual Report Preparation Meeting GSI January 2006 Publications DIPAC 2005 Lyon European Beam Instrumentation Conference –Contributed Talk:J. Belleman A New Trajectory Measurement System for the CERN Proton Synchrotron –Poster A. Galatis Digital Beam Position Measurement at GSI- SIS and CERN PS 2 CERN internal reports

Ulrich RaichAnnual Report Preparation Meeting GSI January 2006 Workplan Collaboration Meeting mid-May in Slovenia, done Collaboration meeting CERN Nov 2005, done Until October 2005: Refinement of Algorithms, implementation Algorithms improved, implementation started 2-3 months delay End 2005: Another measurement session using online signal treatment Will be done in 2006 as early as algorithm implementation and integration will be ready CERN: Installation of new analogue front-ends (almost done) CERN Tender for acquisition of 50 digital treatment boxes Market survey has been done, Tender document is almost ready 2006: Definition of data layout in memory, interfacing to the accelerator control system still possible Installation and commissioning for final PS system (start in 2007)