Chroma

CARE-N3-HHH-ABI

Novel Methods for
Accelerator

Beam

Instrumentation

ABI is a Work package of HHH (High energy High intensity Hadron beams) in the framework of  CARE (Coordinated Accelerator R&D in Europe) N3 (Networking Activities). CARE is supported by the European  Community EU (FP6 Research Infrastructure Action), under the auspice of ESGARD (European Steering Group on Accelerator R&D.)

Main Objectives   ABI structure

Participating
Institutes

Activities Deliverables

Coordination 

Links

Main Objectives

1.   Collaboration on instrumentation projects and problems of real time control of beam parameters, which are common to the existing machines or those under construction, but which are of fundamental nature, such that almost any future machine will profit from the proposed solutions. Best examples for this are real time orbit control, tune and chromaticity control.

2.   Reinforcement of exchange of information and experience between people from laboratories. A typical example is halo formation, collimation and halo diagnostics. This domain is traditionally common to high-power Linacs, but the parameter lists for modern colliders make this also a vital issue for other laboratories.

3.      Establish a parallel working infrastructure in Europe to the proposed US-LARP program, which has as objective to streamline R&D work in the 3 big national labs in the US with the additional benefit of contributing to upgrade tasks of the LHC program. A parallel US-LARP and CARE approach would facilitate further important information flow and collaboration efforts world-wide.

keywords: tools and diagnostic systems for luminosity, wire for beam-beam compensation, advanced transverse beam diagnostics, feedback loops for orbit, chromaticity and coupling, advanced beam halo diagnostics, remote diagnostics and maintenance of instrumentation


ABI structure

During the DIPAC2005 an ABI coordination meeting between DESY, GSI and CERN had taken place to review and redefine the future CARE-HHH-ABI activities. Three mayor results were the outcome of the review:

  1. The financial situation for the ABI activities will allow only one workshop per year. That implies a related change of the ”deliverables for ABI”.

  2. ABI should proceed with their concept of small workshops with its very dedicated and specialized topics. These events should not be and are not in concurrence with more general instrumentation workshops like DIPAC or BIW. The previous ABI workshops were very successful not only in the sense of creating network activities but also in creating real solutions for present problems.

  3. The general scope of ABI will remain unchanged. However, a change of some ABI activities were necessary to keep the workshop topics close to present problems. A new list of ABI activities was generated on this meeting:

New detailed description of activities to be coordinated within the ABI Work Package:

1.      ABI1 –– Studying tools and diagnostic systems for luminosity monitoring and steering

  1. Identify new solutions for  successful Luminosity steering

  2. Procedures for (automated) beam finding and centering without significant beam blow-up, losses and background in the Experiments

  3. What is the best physics process to detect as measure of luminosity?

2.      ABI2 – Studies on the applicability of a wire compensation for long range beam-beam interactions ü

This activity is covered by a US_LARP collaboration, therefore no dedicated ABI workshop is planned. An active ABI contribution to the LARP collaboration is foreseen. ü US-LHC Accelerator Research Program (LARP)

  1. Design and specification of the wire and the required diagnostics system in the machine (positioning of wire, wire shapes, tolerances etc.).

  2. Comparison to other solutions (electron lens); what meets best the functional specifications?

  3. Test in machine studies such a system in existing proton storage rings, discussion of results

3.      ABI3 – Studies on advanced transverse beam diagnostics ü
A workshop dedicated to that topic was held in 2007 (
5th workshop in Chamonix)

  1. Continuous tune tracking: What is the best process to use? Improvements on low excitation Phase locked loop systems (multi-carrier PLLs…) ü 5th workshop in Chamonix

  2. Fast, non-destructive chromaticity measurements: Based on tune tracking and periodic modulation of beam momentum? Modulation frequency above or below the synchrotron tune? Based on the measurement of the phase shift of the betatron motion of the beam head- and tail particles? ü5th workshop in Chamonix

  3. Fast, non-destructive coupling measurements: Development of algorithms to extract coupling information from turn by turn beam position monitor readings

  4. Fast, non destructive profile measurement: Development of high precision profile monitors for high intense hadron beams.

  5. Test some of the above proposals in prototype installations in existing hadron machines. ü 5th workshop in Chamonix

4. ABI4 - Implementation of fast feedback loops for orbit, coupling and chromaticity control ü
A workshop dedicated to that topic was held in 2007 (5th workshop in Chamonix)

  1. Test in machine studies such a system in existing proton storage rings.ü 5th workshop in Chamonix

  2. Suggest improvement to long-term stability of sensors ü 5th workshop in Chamonix

  3. Test and implementation of fast digital readout electronics for BPMs ü(1st ABI workshop in Aumühle)

5.      ABI5 – Studies on advanced beam halo diagnostics
Participation on Halo03 workshop
ü, an ABI workshop is foreseen for a latter time.

  1. Profile Monitors for direct measurement of the beam halo with good transverse resolution. The technological challenge will be a dynamic range of typically six orders of magnitude for the profile monitors.

  2. Halo Interceptive monitors and related mathematical models to deduce halo distribution

  3. Test some of the above proposals in prototype installations in existing hadron machines ü.

6.      ABI6 – Studies leading to remote diagnostics and maintenance of instrumentation devices ü
A workshop dedicated to that topic was held in 2005 (see Hirschberg 2005)
ü

  1.  Prepare controls infrastructure (network permissions…) to be able to diagnose and/or change settings of instrumentation devices in other laboratories. ü

  2. Create « political » acceptance for such installations. ü

  3. Requirements of diagnostic tools for global accelerator network (GAN) ü

7.      ABI7 – Studying tools for diagnostic systems for high intense preaccelerators; preservation of emittance in the accelerator chain
A workshop dediated to this topic was held in 2008 (see Bad Kreuznach)
ü

  1. Identify hardware solutions for instrumentation in a radiation hard environment. ü

  2. Identify hardware requirements for transversal beam diagnostics. ü

  3. Identify hardware requirements for longitudinal beam diagnostics. ü

  4. Measurement of space charge effects on the beam as well as on the instrument. ü

8.      ABI8 – Requirements of diagnostic tools for machine protection systems (MPS) ü

1) A few weeks stay of M. Werner at CERN. His contribution was very useful to an expert audit of the complete engineering of the LHC machine protection system. 
2) The FMCM (Fast Magnet Current Monitor) developed at DESY is now integral part of the LHC machine protection system. More than 20 units will be produced in order to monitor the stability of the supply current of key warm magnets in the LHC. 
3) New calculations of quench levels at HERA and analyses of beam induced quenches at HERA were presented at HB2006. The examination was triggered by the DESY-CERN collaboration in machine protection.
  1. Studying the precision on AC and DC beam current monitors for beam lifetime analyses and fast machine protection. ü(2nd ABI workshop in Lyon)

  2. Requirements on beam loss monitor systems for machine and quench protection (Joint with AMT)  ü(AMT Workshop)

  3. Identifying diagnostic instruments and systems which can be used as reliable MPS transducer.

  4. Test some of the above proposals in prototype installations in existing hadron machines.    ü(LHC BLM installation in HERA)


Participating institutes

The following organizations and associated institutes contribute to the ABI Network (Contact Person for the ABI Work Package)

 

Institute

ABI1

ABI2

ABI3

ABI4

ABI5

ABI6

ABI 7 ABI 8

CERN

H. Schmickler

J.P. Koutchouk

A. Burns

J. Wenninger

E. Bravin

H. Schmickler

  R. Schmidt

GSI

 

 

P. Forck

A. Galatis

P. Forck

A. Peters

P. Forck H.Reeg

DESY

 

 

S. Herb

J. Klute

K. Wittenburg

R. Bacher

K. Wittenburg M. Werner

PSI

 

 

 

V. Schlott

 

   

ESRF

 

 

 

 

K. Scheidt

K. Scheidt

   

UPSA

 

 

V. Ziemann

 

 

V. Ziemann

   

BNL

A. Drees

 

P. Cameron

P. Cameron

 

S. Peggs

   

LBNL

B. Turner

 

 

 

B. Turner

P. Denes

   

FNAL

J. Marriner

V. Shiltsev

D. McGinnis

J. Marriner

 

J. Marriner

   


Activities

 

CARE-N3-HHH-ABI

Novel Methods for Accelerator Beam Instrumentation

1st meeting in the framework of the CARE-HHH-ABI networking
place: D-21521 Aumuehle, Hotel Waldesruh am See
dates: 22.-23. June 2004

picture

Organization of the 1st workshop  in the framework of the CARE-HHH-ABI networking on
Trajectory and Beam position measurements using digital techniques,
Aumuehle (near Hamburg), 22-23 June. The presentations and the proceedings are available on the web here.

The aim of this workshop was to understand specific problems of implementing new digital technologies for beam orbit and position measurements in hadron machines. The new digital methods have already been successfully implemented in various synchrotron light sources. In these applications submicron resolution and long-term stability over days, even independent of seasonal changes, are the most important design criteria. The digital solutions profit from the electron beams being fully relativistic (no change of revolution frequency) and from the very small variation of bunch intensities. Proposing similar digital technologies for hadron machines confronts the designers with several additional problems:
-         a large variation in bunch intensities and filling patterns,
-         change of harmonic numbers with beam in the machine,
-         varying revolution frequency,
-         demands for multi-bunch and multi-turn data.

The purpose of the workshop was also to bring together people with experience from digital orbit systems in Synchrotron Light sources and people who intend to implement this technology in hadron machines (GSI and CERN). During the three half-day sessions the following was done:
-         review of performance and design issues in light source implementation,
-         review of specifications for hadron machines,
-         attempt of technical solutions and proposal of test measurements.

During the organization of the first event it became clear, that a better compromise in terms of number of participants had to be found:

a) The participants support the idea of these networking events so much, such that they make specific efforts to lower the travel cost (shared travel with cars)
b) The number of participants is smaller than anticipated.
This is due to the fact, that we focus in the networking events on very specific subjects. In case we would enlarge the scope of the subjects, we would enter in conflict with the annual European or American instrumentation workshops (DIPAC and BIW).
In conclusion: Two networking meetings/year can be financed with the available EU funds.

LAPAC Meeting
17-18 June 2004.
Fermi National Accelerator Lab


Active contribution (K. Wittenburg) to the US-LARP- LAPAC (US LHC Accelerator Research Program Advisory Committee) evaluating the planned program with regard to:  
  • The balance between the breadth of the technical program and the available resources.
  • How well the program as a whole and its specific elements address and balance between the two program objectives:
    • To advance high energy physics by helping to make the LHC the strongest possible tool for HEP research.
    • To advance US accelerator physics and technology.
See:  http://www-td.fnal.gov/LHC/USLARP/USLARP_CollabMtg_20040617/LARP_Jun_04.html
Larp

 


Active contribution to the US-LARP collaboration steering by the introduction of “task sheets” describing agreed milestones and deliverables. Video conference meeting on 1st July 2004 of the US-CERN Committee for the LARP (see H. Schmickler’s presentation).

Collaboration Meetings

Port Jefferson Sept 2003

Fermilab Feb 2004

Napa Valley Oct 2004

Port Jefferson 6-8 April 2005

DOE Review of LARP, June 5-6, 2007, Fermilab

 



The 2nd meeting in the framework of the CARE-HHH-ABI networking is scheduled for 1. -2. December 2004 in Lyon with the subject:

 The purpose of the event was:

 -          to review the present technologies available for the measurements of the integral (DC) beam intensity

-          to isolate individual physical or technological limitations in the performance of these devices

-          to discuss new ideas for those measurements

-          to define R&D programs for those new concepts

-          to discuss specific algorithms used to calculate lifetimes from the beam current measurements

For these objectives we consider important the experience from the major three European laboratories working with hadron beams (DESY; GSI; CERN) and experience from SNS and BNL in the US (RHIC machine). The experience was complemented by one or two participants from an industrial company

place:  F-69004 Lyon, Hotel Metropole

Workshop on:

Beam-generated heat deposition and quench levels in LHC magnets

3-4 March 2005, CERN, Building 40/S2-A01

          Heidelberg

The 3rd workshop in the framework of

CARE-N3-HHH-ABI

Novel Methods for  Accelerator Beam Instrumentation

Remote diagnostics and maintenance of beam instrumentation devices

The event lasts for two days from the 6th and 7th of December  2005 and took place in Hirschberg close to Heidelberg (Germany) .

 

The 4th workshop in the framework of

CARE-N3-HHH-ABI

Novel Methods for  Accelerator Beam Instrumentation

Simulation of BPM front-end electronics and Special Mechanical Designs”

The event lasts for two days from the 30th of November and 1st of  December 2006 and it will take place in Lueneburg close to Hamburg (Germany)

The 5th workshop in the framework of

CARE-N3-HHH-ABI

Novel Methods for  Accelerator Beam Instrumentation

"Schottky, Tune and Chromaticity Diagnostic (with real time feedback)".

Date: December 11th-13th 2007 in Hotel Prieuré ***
BP 135, 149 allée du Recteur Payot, 74404 Chamonix Mont-Blanc, (France).
Details about the hotel can be found at  http://www.bestmontblanc.com/en/prieure.html

    

The sixth (and last) event in the framework of
CARE-N3-HHH-ABI

Novel Methods for 
Accelerator Beam Instrumentation

"Transverse and Longitudinal Emittance Measurement in Hadron-(Pre-)Accelerators".

Date: December 10th -  12th , 2008
Location:
Castle Kauzenburg in Bad Kreuznach, www.kauzenburg.de (about 70 km west of Frankfurt Airport, 60 km south-east of ‘Frankfurt’-Hahn Airport, Hunsrück)


Deliverables of ABI

CARE-Conf-04-023-HHH

Proceedings of the  2nd meeting in the framework of the CARE-HHH-ABI networking, held 1. -2. December 2004 in Lyon
DC current transformers and beam-lifetime evaluations
ed. by K. Wittenburg, A. Peters, H. Schmickler

CARE-Conf-04-024-HHH Proceedings 1st meeting CARE-N3-ABI networking framework of the CARE-N3-ABI networking in Aumuehle, Hotel Waldesruh am See, dates: 22.-23. June 2004
T
rajectory and Beam position measurements using digital techniques
ed. by K. Wittenburg
CARE-Conf-05-044-HHH Proceedings 3rd meeting CARE-N3-ABI networking framework of the CARE-N3-ABI networking in Hirschberg, 6th and 7th of December  2005, Remote diagnostics and maintenance of beam instrumentation devices ed. by K. Wittenburg

CARE-Conf-06-087-HHH

Proceedings of the 4th CARE-HHH-ABI Workshop on “Simulation of BPM Front-End Electronics and Special Mechanical Designs” Lüneburg (Germany); 30th of November and 1st of December 2006
Edited by K. Wittenburg

CARE-Conf-08-003-HHH Proceedings of the 5th CARE-HHH-ABI workshop on "Schottky, Tune and Chromaticity Diagnostic (with real time feedback)". Date: December 11th-13th 2007,Chamonix. Ed. by K. Wittenburg
CARE-Conf-08-033-HHH

Proceedings of the 6th CARE-HHH-ABI workshop on "Transverse and Longitudinal Emittance Measurement in Hadron-(Pre-)Accelerators". Date: December 10th to 12th , 2008, Castle Kauzenburg in Bad Kreuznach. Ed. by K. Wittenburg

CARE-HHH annual report 2004 First ABI annual report 2004
CARE-HHH annual report 2005 Second ABI annual report 2005
CARE-HHH annual report 2006   Highlights_from_CARE-HHH-ABI.ppt
Concluding Summary on CARE-HHH-ABI network workshops
Talk and Report by H. Schmickler at
CARE-HHH-Workshop 2008
24 to 25 Nov. 2008; Chavannes-de-Bogis
Les Champs Blancs; CH-1279 Chavannes-de-Bogis

 

·        Proceedings of each workshop, published in electronic form on the web.

There are already two bi-annual general beam instrumentation workshops: BIW in the US and DIPAC in Europe. The topical workshops will be attached in time to these events (reduction in travel cost). The proceedings of DIPAC are published under the JACOW system. It would be desirable to publish also the network proceedings under JACOW.

·        Annual reports (the last year will be also the final report) indicating the progress of the integration activity among various laboratories and addressing each single work package and a global assessment of the progress toward HE-HI hadron collider beyond LHC present energy. The reports will reflect the line given at the annual general meetings.

 

During its first meeting the ABI group reviewed and discussed the ongoing R&D program in the institutes. It defined a priority list with issues requiring a stronger interaction and coordination. An integrated work plan is set and a list of one topical workshops per year in addition to the annual meetings is established to address them. Workshop dates will be decided for the different topics

 

Tasks       = done   = planned or in preparation

2004

2005

2006

2007

2008

Milestones

General Collaboration meetings

 

 

 

 

 

 

 

 

 

 

1 meeting every year ü

Discussion and definitions of priority list:

 

 

 

 

 

 

 

 

 

 

Mid-04: Published report ü

1. Trajectory and Beam position measurements using digital techniques,

2. DC current transformers and beam-lifetime evaluations

 

 

 

 

 

 

 

 

 

 

End-04: Two Workshop proceedings ü

Remote diagnostics and maintenance of beam instrumentation devices

 

 

 

 

 

 

 

 

 

 

End-05: One Workshop
Proceedings ü

Luminosity Monitoring and Steering, changed topic to:Simulation of BPM front-end electronics and Special Mechanical Designs

 

 

 

 

 

 

 

 

 

 

End-06: One Workshop
Proceedings ü

Advanced transverse beam diagnostics: Schottky, Tune and Chromaticity Diagnostic (with real time feedback)

 

 

 

 

 

 

 

 

 

 

End-07: One Workshop
Proceedings ü

Advanced beam halo diagnostics and/or Machine Protection Systems and/or "Transverse and Longitudinal Emittance Measurement in Hadron-(Pre-)Accelerators".

 

 

 

 

 

 

 

 

 

 

End-08: One Workshop proceedings ü

Annual reports summarizing status of ABI studies including a final summary report

 

 

 

 

 

 

 

 

 

 

Once every year. ü

 


Links

List of some recent publications

CARE-Conf-04-024-HHH Proceedings 1st meeting CARE-N3-ABI networking framework of the CARE-N3-ABI networking in Aumuehle, Hotel Waldesruh am See, dates: 22.-23. June 2004
T
rajectory and Beam position measurements using digital techniques
ed. by K. Wittenburg

CARE-Conf-04-023-HHH

Proceedings ”DC current transformers and beam-lifetime evaluations” ed. by K. Wittenburg, A. Peters, H. Schmickler

HERA 05-02

 

Quench levels and transient beam losses at HERA (ppt talk)

Kay Wittenburg

Talk given on the CARE AMT workshop on “Beam generated heat deposition and quench levels for LHC magnets”; CERN, 3-4 March 2005

HERA 05-01 Beam Losses and Machine Protection
K. Wittenburg
AIP Conf.Proc.773:449-451,2005 Also in *Bensheim 2004,High intensity and high brightness hadron beams* 449-451; Beam loss & machine protection  (Report; ppt talk)
K. Wittenburg (DESY)
33rd ICFA ADVANCED BEAM  DYNAMICS WORKSHOP on  HIGH INTENSITY & HIGH BRIGHTNESS  HADRON BEAMS
Prepared for 33rd ICFA Advanced Beam Dynamics Workshop: High Intensity High Brightness Hadron Beams (ICFA HB2004)
CARE-Conf-05-044-HHH Proceedings 3rd meeting CARE-N3-ABI networking framework of the CARE-N3-ABI networking in Hirschberg, 6th and 7th of December  2005, Remote diagnostics and maintenance of beam instrumentation devices ed. by K. Wittenburg
HERA 06-04

CARE-Conf-06-063-HHH

Very Fast Beam Losses at HERA, and What Has Been Done about It
M. Werner, K. Wittenburg         
ICFA HB2006

CARE-Conf-06-087-HHH

Proceedings of the 4th CARE-HHH-ABI Workshop on “Simulation of BPM Front-End Electronics and Special Mechanical Designs” Lüneburg (Germany); 30th of November and 1st of December 2006
ed. by K. Wittenburg

CARE-Conf-08-003-HHH Proceedings of the 5th CARE-HHH-ABI workshop on "Schottky, Tune and Chromaticity Diagnostic (with real time feedback)".Date: December 11th-13th 2007, ed. by K. Wittenburg

Coordination

ABI is coordinated by  
H. Schmickler
(CERN) and K. Wittenburg (DESY) (Deputy)


Last modified on 04/16/2009 11:38 by Kay Wittenburg

Courtesy Amelia Schultheis, I've used your web-page-style http://care-hhh.web.cern.ch/care-hhh/ Thanks.