Photon Beam Position Monitors and Beam Stability at the Swiss Light Source Elsa van Garderen March 12 th, 2008.

Slides:

Advertisements

Similar presentations

Stability studies at SOLEIL Nicolas HUBERT # on behalf of the stability group: N. Hubert, L. Cassinari, J-C. Denard, L. Nadolski, M-A. Tordeux #

Advertisements

5 th CARE workshop on Novel Methods for Accelerator Beam Instrumentation, Chamonix, Dec Requirements for Tune, Coupling and Chromaticity Feedbacks.

1 Slow Global Orbit Feedback at Pohang Light Source (PLS) Heung-Sik Kang Pohang Accelerator Laboratory Pohang, Korea.

FAST ORBIT CORRECTION AT THE ESRF Eric Plouviez on behalf of: J. Chavanne, J.M. Koch, J.L. Pons, F. Uberto, L. Zhang.

K. Balewski (DESY)IWBS Conceptual Design of the PETRA III Orbit Feedback K. Balewski, H.T Duhme, J. Klute, I. Krouptchenkov, R. Neumann, G. K. Sahoo,

Y. R. Roblin, Apr 23, 2009 Hall D Fast Feedback System Performance and configuration.

January 24, 2008 Heinz-Dieter Nuhn, SLAC / LCLS Undulator BLM PDR Review 1 Undulator BLM PDR Review Heinz-Dieter Nuhn, SLAC / LCLS.

Beamline 12 Project BL12 In-vacuum Undulator Source August 11, 2004 Andy Ringwall BL12 In-vacuum Undulator Source August 11, 2004 Andy Ringwall.

Stability of Mechanical Systems S. Sharma and V. Ravindranath.

1 BROOKHAVEN SCIENCE ASSOCIATES NSLS-II Stability Workshop April , 2007 NSLS-II Electrical Systems G. Ganetis NSLS-II Electrical Systems NSLS-II.

18. June 2003EPICS WS Control of Digital Power Supplies Andreas Lüdeke Swiss Light Source / PSI 20 May 2003 EPICS Collaboration Meeting.

3 rd Libera Users Meeting – June 2009 Preparation work for ALBA’s Closed-Orbit BPMs 1/33 Preparation work for ALBA’s Closed-Orbit BPMs 3rd Libera Users.

EPICS Insertion Device Control System Pete Owens EPICS Collaboration Meeting June 2003 Control System for a Helical Undulator Pete Owens Daresbury Laboratory.

Beam Instrumentation for Orbit Stability I. Pinayev.

Volker SchlottIWBS’04, Grindelwald, Report on internal „mini-workshop on beam stability at SLS” SLS PAUL SCHERRER INSTITUT The workshop.

Characterization of Fast Orbit Feedback System Om Singh, APS, ANL NSLS-2 Beam Stability Workshop BNL, April 18-20, 2007.

DLS Digital Controller Tony Dobbing Head of Power Supplies Group.

IWBS 2004 PSI, Grinderwald, Switzerland 6-10 December Orbit Stability: Recent Activities at ELETTRA, D. Bulfone Orbit Stability: Recent Activities.

CLIC RTML collimation systems and beam stabilisation R. Apsimon CERN, TE-ABT-BTP ECFA LC2013 at DESY, Hamburg 27 th -31 st May 2013.

Hall A Parity Workshop (May 10, 2002), 1 Operated by the Southeastern Universities Research Association for the U.S. Depart. Of Energy Thomas Jefferson.

Ethernet Based Embedded IOC for FEL Control Systems J. Yan, D. Sexton, Al Grippo, W. Moore, and K. Jordan ICALEPCS 2007 October 19, 2007 Knoxville Convention.

Photon Beam Position Monitors and Beam Stability at the Swiss Light Source E. van Garderen, J. Krempaský, M. Böge, J. Chrin, T. Schmidt Paul Scherrer Institute,

Technical Challenges and Concerns S. Sharma and R. Alforque, R. Beuman, C. Foerster, E. Haas, E. Hu, P. Montanez, P. Mortazavi, S. Pjerov, J. Skaritka,

Orbit Control For Diamond Light Source Ian Martin Joint Accelerator Workshop Rutherford Appleton Laboratory28 th -29 th April 2004.

Problems setting-up the ALBA FOFB Problems setting-up the ALBA FOFB DEELS May - ESRF Angel Olmos.

F Antiproton Source Apertures Steve Werkema DOE Tevatron Operations Review March 22, 2006.

Detectors for Light Sources Contribution to the eXtreme Data Workshop of Nicola Tartoni Diamond Light Source.

SPPS, Beam stability and pulse-to-pulse jitter Patrick Krejcik For the SPPS collaboration Zeuthen Workshop on Start-to-End Simulations of X-ray FEL’s August.

Instrumentation at CLS (Presentation to Saskatchewan Instrumentation Society Executive) Elder Matias Canadian Light Source University of Saskatchewan

Nuruzzaman ( Hampton University Group Meeting 1 st November 2011 Beamline Optics Using Beam Modulation for the Q-weak Experiment.

Hovanes Egiyan Jefferson Lab. Main Hall B Beamline Components Beam Tuning Procedure HV System in Hall B Temperature Sensors Summary 10/19/ Hovanes.

Development of a Low-latency, High-precision, Intra-train Beam Feedback System Based on Cavity Beam Position Monitors N. Blaskovic Kraljevic, D. R. Bett,

1 BROOKHAVEN SCIENCE ASSOCIATES Storage Ring Commissioning Samuel Krinsky-Accelerator Physics Group Leader NSLS-II ASAC Meeting October 14-15, 2010.

1 NSRRC XBPM and Beam Stability Mimi Workshop Hideki AOYAGI SPring-8 / JASRI Sep11-12,2008 Overview of XBPMs at SPring-8 1. Introduction - Requirements.

1 BROOKHAVEN SCIENCE ASSOCIATES Stability Issues NSLS-II PAC Meeting May 24, 2007 S. Krinsky.

Commissioning of the CMCF 08ID-1 Beamline. Light in the Optical Hutch September 2005 Light at the entrance to the white beam slits (42 m). The rectangular.

A users viewpoint: absorption spectroscopy at a synchrotron Frithjof Nolting.

SPS UA9 data taking run with LHC-type Goniometer 31/07/2015 – Collimation Upgrade Specification Meeting #60 Roberto Rossi Daniele Mirarchi, Stefano Redaelli,

D. Still-FNAL/Tevatron HALO '03 Tevatron Collider II Halo Removal System Dean Still Fermilab Tevatron Department 5/21/2003 Motives for the Collider Run.

PSD upgrade: concept and plans - Why the PSD upgrade is necessary? - Concept and status of the PSD temperature control - Concept of the PSD analog part.

Experience Laurent S. Nadolski Accelerator Physics Group On behalf of the Sources and Accelerator Division.

Updated Overview of Run II Upgrade Plan Beam Instrumentation Bob Webber Run II Luminosity Upgrade Review February 2004.

Diagnostics and Optimization Procedures for Beamline Control at BESSY A. Balzer, P. Bischoff, R. Follath, D. Herrendörfer, G. Reichardt, P. Stange.

PSD upgrade: concept and plans - Why the PSD upgrade is necessary? - Concept of the PSD temperature stabilization and control - Upgrade of HV control system.

LCWS, UTA, Reaching ultra-low emittance at SLS through (systematic and) random optimization LCWS 2012 Joint CLIC/ILC Working Group – Damping.

1 Jean-Claude DENARD Workshop on Accelerator R&D for Ultimate Storage Rings Version 2.0 ORBIT FEEDBACK SYSTEMS and XBPMs J-C. Denard, N. Hubert * and L.

C. Steier, USR 2012, Feedbacks for USR, Workshop on Accelerator R&D for Ultimate Storage Rings : Beijing / IHEP, October 2012 Feedbacks for Ultimate.

1 BROOKHAVEN SCIENCE ASSOCIATES Beam Stability Overview NSLS-II CFAC Meeting May 8, 2007 S. Krinsky.

Anticipated Limits on Machine Stability and some Consequences on Machine and Beamline Designs Jean-Claude Denard Workshop on Accelerator R&D for USRs Hairou,

Fast Global Orbit Feedback for the Australian Synchrotron Eugene Tan Accelerator and Operations 13/12/20101 ACAS Workshop on Accelerator Feedback Systems.

SOLEIL OPERATION AND ON-GOING PROJECTS C. Herbeaux On behalf of SOLEIL Groups C. Herbeaux, November ESLS23, 24-25, 2015, PSI1.

Operation Status of the RF Systems and Taiwan Photon Source

MACHINE OPERATION AT ALBA Montse Pont, CELLS-ALBA 16-18/12/2013.

Overview Preparatory work at the MML BBA to define the reference orbit

Snr Power Supply Engineer

Proposal for a Transparent Off-Axis Injection Scheme for BESSY II

LLRF and feedback Outline Scope LLRF Requirements

SOLEIL Fast Orbit Feedback System

Commissioning the Fast Orbit Feedback System at SSRF

Beam-Based Feedback in LCLS-II

Status of muon monitor R&D and construction

Feedback Systems Joe Grames Hall A Parity Meeting Jefferson Lab

Machine Tolerances in Cleaning Insertions

OCELOT orbit correction and optimizer

Undulator Line Design Liz Moog, Advanced Photon Source April 24, 2002

Present Status of Orbit Stabilization at SPring-8

Fast Orbit Feedback at the SLS

A. Agui, T. Nakatani, A. Yoshigoe (JAERI/SPring-8),

Breakout Session SC3 – Undulator

CLIC luminosity monitoring/re-tuning using beamstrahlung ?

Presentation transcript:

Photon Beam Position Monitors and Beam Stability at the Swiss Light Source Elsa van Garderen March 12 th, 2008

What are the XBPMs? principle: 4 blades of Tungsten read the tails of the photon beam. Beam position deduced by asymmetries. Design of K. Holldack (BESSY), produced by FMB (Berlin). Front end of ID beamlines (top view) Front end of Bending beamlines (top view) Source point x BPM2 XBPM2 SPM1SPM2 Source point (front view) XBPM1 SPM1 SPM2 XBPM1 Beam profile

LCAD: Low Current Asymmetry Detector triaxe cables; Bias voltage= -70 V; I/U converter ID beamlines => XBPMs have motors VME signal processing (Hytec). 3.5 cm Transition Module 8201 Carrier board 8002 ADC 8401 VxWorks EPICS Analog signal

XBPM launcher Slow XBPM feedback Fast Orbit feedback 30 min archiver data can be saved (for offline analysis)

XBPM Feedback Fast Orbit Feedback (100 Hz) corrects electron beam movements. Based on readings of DBPMs. Problem: reference of DBPMs is not static. Fluctuations (μm level) due to: Air temperature variation at location of DBPM electronics Temperature changes in SLS tunnel due to beam loss Solution: XBPM feedback (slow: 0.5 Hz) photon beam changes = angle variation of orbit at source point → changes the reference of DBPMs Update: fast XBPM feedback (implies hardware upgrade). M. Böge et al., User operation and upgrades of the fast orbit feedback at the SLS, proceedings PAC05, Knoxville, USA DBPM1 DBPM2 Electron beam Photon beam Source point XBPM1 XBPM2

without XBPM feedback (X09LA) with XBPM feedback (X10SA) DBPM before ID DBPM after ID DBPM before ID DBPM after ID x y x y XBPMDBPM

XBPMs and Feed forward Feed forward (IDFF) corrects a priori distortions due to ID gap changes. (currently for in-vacuum undulators) Acts on correctors upstream and downstream of the ID. → good efficiency to stabilise electron beam. → but internal ID steering effects cause displacement of photon beam. Therefore, XBPMs are included in IDFF determination procedure (high level: Java): IDFF tables implemented on low level EPICS based control system (10 Hz). Move gap Observe effect on electron orbit Deduce correction kicks on electron orbit Observe effect on photon beam position Apply correction Step 1 Step 2

J. Chrin at al., A feedforward procedure to counteract orbit distortion and photon beam displacements from insertion device operation at the SLS, proceedings ICALPECS07, Knoxville, USA XBPM aligned for gap = 8.5 mm and calibrated for each gap IDFF off: 150 μm excursion when gap closes from 8.5 to 5 mm IDFF on: excursion removed U19 gap size (mm)

Conclusion XBPMs at SLS: XBPMs feedback (slow) part of FOFB (bending+ in vacuum ID beamlines) XBPMs used to create feedforward tables (in-vacuum ID beamlines) Future: XBPM feedback becomes fast feedback feedback and feedforward for all ID beamlines XBPMs in the world: Developed at BESSY Recently bought for SOLEIL and DIAMOND Interest of ALS Deep involvement of SLS

I would like to thank PSI: J. Krempaský for daily support M. Böge for FOFB and XBPM feedback J. Chrin for feed forward tables Th. Schmidt for insertion devices issues The beamline scientists of their comments Q. Chen and R. Wullschläger for technical support BESSY: K. Holldack for useful discussions