FLASH 9 mA Workshop, 2009/01/16Lars Fröhlich (MPY), Martin Staack (MCS4) Machine Protection: Status + Outlook Status of the fast protection system Beam.

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Presentation transcript:

FLASH 9 mA Workshop, 2009/01/16Lars Fröhlich (MPY), Martin Staack (MCS4) Machine Protection: Status + Outlook Status of the fast protection system Beam loss monitors for the dump line Small issues, miscellaneous

FLASH 9 mA Workshop, 2009/01/16Lars Fröhlich (MPY), Martin Staack (MCS4) Fast Protection: Overview Beam Interlock Concentrators (BICs) Beam Loss Monitors (BLMs) Toroid Protection System (TPS) Miscellaneous (coupler interlocks,...) Injector Laser Pulse Controller RF Inhibit ACC1 LLRF Controllers alarm signals interlock signals

FLASH 9 mA Workshop, 2009/01/16Lars Fröhlich (MPY), Martin Staack (MCS4) Fast Protection: Overview Beam Interlock Concentrators (BICs) Beam Loss Monitors (BLMs) Toroid Protection System (TPS) Miscellaneous (coupler interlocks,...) Injector Laser Pulse Controller RF Inhibit ACC1 LLRF Controllers alarm signals interlock signals

FLASH 9 mA Workshop, 2009/01/16Lars Fröhlich (MPY), Martin Staack (MCS4) Beam Loss Monitors Sufficient instrumentation up to dump entrance New Čerenkov BLMs added (1 installed, 1 in next weeks) Shutdown: Long ionization chambers (K. Wittenburg): integration to MPS prepared Čerenkov BLM with longitudinal resolution (M. Körfer): no integration to MPS IR-UND Dump Čerenkov BLM w/o longitudinal resolution Čerenkov BLM with longitudinal resolution

FLASH 9 mA Workshop, 2009/01/16Lars Fröhlich (MPY), Martin Staack (MCS4) Fast Protection: Overview Beam Interlock Concentrators (BICs) Beam Loss Monitors (BLMs) Toroid Protection System (TPS) Miscellaneous (coupler interlocks,...) Injector Laser Pulse Controller RF Inhibit ACC1 LLRF Controllers alarm signals interlock signals

FLASH 9 mA Workshop, 2009/01/16Lars Fröhlich (MPY), Martin Staack (MCS4) Toroid Protection System Bypass TPS #1 and #2 operational, but... Re-calibration required because of major changes to toroid signal levels (time needed: ~2 h at low losses) Designed for up to 9 MHz, but never tested

FLASH 9 mA Workshop, 2009/01/16Lars Fröhlich (MPY), Martin Staack (MCS4) Fast Protection: Overview Beam Interlock Concentrators (BICs) Beam Loss Monitors (BLMs) Toroid Protection System (TPS) Miscellaneous (coupler interlocks,...) Injector Laser Pulse Controller RF Inhibit ACC1 LLRF Controllers alarm signals interlock signals

FLASH 9 mA Workshop, 2009/01/16Lars Fröhlich (MPY), Martin Staack (MCS4) Miscellaneous Alarm Sources Coupler interlocks: ACC1–5 OK ACC6, ACC7, ACC39 to be added LLRF exceptions: prepared, but not used New toroid integrator (~May): limits charge to 30 nC/bunch train in short pulse mode Quench detection for 9 mA run?

FLASH 9 mA Workshop, 2009/01/16Lars Fröhlich (MPY), Martin Staack (MCS4) Fast Protection: Overview Beam Interlock Concentrators (BICs) Beam Loss Monitors (BLMs) Toroid Protection System (TPS) Miscellaneous (coupler interlocks,...) Injector Laser Pulse Controller RF Inhibit ACC1 LLRF Controllers alarm signals interlock signals

FLASH 9 mA Workshop, 2009/01/16Lars Fröhlich (MPY), Martin Staack (MCS4) Connections to LLRF Controllers Connection MPS  ACC1 available ACC1 LLRF is aware of MPS alarms: output is zeroed for remaining pulse Past coupler interlock problems solved New problem with adaptive feedforward: irritated by shortened RF pulse  instability Do we need connections to the LLRF of the other modules, e.g. for beam loading compensation? shortening of ACC1 RF pulses disabled until there is a solution

FLASH 9 mA Workshop, 2009/01/16Lars Fröhlich (MPY), Martin Staack (MCS4) The end.