Home page
of Helmut Burkhardt
With links to recent papers and
presentations.
On work for LHC, SPS, LEP and Linear Colliders.
Subjects include
Luminosity, Background, Lifetime, Monte Carlo
Generators of background processes, Synchrotron radiation, Compton
scattering on black body
photons, very forward radiative Bhabha-scattering (Beam-Beam
Bremsstrahlung)
and alpha QED.
Links
to papers, conferences and transparencies shown
Indico search for my
presentations
CDS
search for my papers
Spires
search for my papers
Jacow search for my
presentations at machine conferences
LHC related activities
LBS LHC background study group, dealing with beam conditions as relevant for the LHC experiments
Related to
experimental conditions background, luminosity,
commissioning, special physics
optics -- high beta.
LHC background page
( my older version is here )
Related to injection,
beam loss, collimation.
LHeC information and parameter calculator
IPAC2011 San Sebastian contributions
Specification of New Vacuum Chambers for the LHC Experimental Interactions, tups026
LHeC Lattice Design, thpz014,
90 m Optics Commissioning, tupz001
90 m beta* Optics for ATLAS/ALFA, tupz002
Machine-induced Showers entering the ATLAS and CMS Detectors in the LHC, tupz012
Fill Analysis and Experimental Background Observations in the LHC, tupz020
LHC status at startup, presentations at workshops and conferences
EDS'09, 29/06/2009, Startup planning for the LHC and operation scenario for forward physics, presentation, proceedings
LP'09, 17/08/2009, Status of the LHC Machine, presentation, proceedings
RADCOR'09, 26/10/2009, Status of the LHC Machine, presentation, proceedings
IPAC2010 Kyoto contributions
First Luminosity Scans in the LHC, MOPEC014
Beam-gas Loss Rates in the LHC, TUPEB072
Dependence of Background Rates on Beam Separation in the LHC, TUPEB073
Muon Backgrounds in CLIC, THPD014
Characterization of Interaction-Point Beam Parameters .. in the ATLAS Detector at the LHC, MOPEC008
Physics at the Terascale, LHC Physics Workshop 2010, Machine Status and Prospects, Hamburg, Oct. 2010
Course
on Accelerator Physics, Univ. Karlsruhe, Workshop
Freudenstadt Oct. 2009
PAC 2009 Vancouver contributions
Luminosity Optimization and Calibration in the LHC WE6PFP015
Study of High Beta Optics Solution for
TOTEM WE6PFP016
Optimization of the LHC Separation Bumps Including Beam-Beam
Effects WE6PFP018
Halo and Tail Simulations with Application to the CLIC Drive
Beam WE6PFP085
Simulation of Beam-Gas Scattering in the LHC TH5PFP011
Analysis of the Transverse SPS Beam Coupling Impedance with Short and
Long Bunches FR5RFP047
The
Large Hadron-electron Collider (LHeC) at the LHC FR1PBC05
Annual
Ket meeting Nov. 2008, LHC Maschine, pdf
Course
on Accelerator Physics, 40th school Maria Laach
Sept. 2008, the direct link to the slides is here
EPAC 2008 Genova contributions
CERN SPS Impedance in 2007 TUPP066
Energy Loss of Gold Ions in RHIC WEPP001
Optics Flexibility in the LHC at Top Energy WEPP003
Overall Optics Solutions for Very High Beta-star in Atlas WEPP004
A Storage Ring Based Option for the LHeC WEPP052
Beam Scraping to Detect and Remove Halo in LHC Injection THPC149
PAC
2007 Albuquerque contributions
Beam Scraping for LHC Injection TUPAN088.PDF
Halo Estimates and Simulations for Linear Colliders WEOCC03.PDF
and CLIC-Note-714
(CERN-AB-2007-045)
Fast Vertical Single-Bunch Instability at Injection in the CERN SPS -
An Update RPMN065.PDF
Numerical Study of the Very Forward Background from the Proton-Proton
Collisions in the LHC TUPAN102.PDF
EPAC
2006 Edinburgh contributions
Halo and Tail Generation Studies for Linear Colliders THPCH019.PDF
Optics Flexibility and Dispersion Matching at Injection into the LHC TUPLS014.PDF
On the Implementation of Experimental Solenoids in MAD-X and their
Effect on Coupling in the LHC WEPCH043.PDF
Annual
Ket meeting Nov. 2006, LHC status and plans
pdf
Introduction to Accelerators, HST course July 2006,
pdf
The LHC Accelerator, IMPRS and Colloquium,
MPI München, 21 February 2006, pdf
Accelerator
R&D for High Energy Physics. Report from the HEP2005 conference AB
Seminar 22/9/2005,
PAC
2005 (Knoxville, TN) contributions
Optics Flexibility and Matching at LHC Injection, MPPE047, LHC-Project-Report-830; CERN-LHC-Project-Report-830
Measurements of the LHC Collimator Impedance with Beam in the SPS,
TPAP008, LHC-Project-Report-831; CERN-LHC-Project-Report-831
Collimation in the Transfer Lines to the LHC, TPAP009, LHC-Project-Report-829; CERN-LHC-Project-Report-829
Recent Machine Developments. MD-Notes and APC
presentations, with SPS single bunch coherent oscillations,
Impedance studies, Space Charge, Observation of a transverse instability
ICFA-HB2004 Oct.
18-22 (Bernsheim)
"Loss control and collimation for the LHC", Talk pdf and
Writeup pdf
and LHC-Report
803
"Single Bunch Transverse Intensity Limitations in
the SPS", Talk pdf and
Writeup pdf
AIP Conf. Proc.: 773 (2005) pp.368-370
Chamonix
workshops on LHC,
SPS, LEP with my
contributions
EPAC
2004
(Luzern) contributions (the full proceedings are here):
Collimation in the transfer lines to the LHC, MOPLT012
Observation of a Fast Single-Bunch Transverse Instability on Protons in
the SPS, WEPLT012
Investigation of Space Charge Effects and Intrabeam Scattering for Lead
Ions in the SPS, WEPLT013
PAC 2003
(Portland) contributions
(for the full PAC use this and for the
full proceedings this):
Protection Devices in the Transfer Lines to the LHC TPPB052
and CERN-LHC-Project-Report-641
Investigation of Space Charge effects in the SPS RPPB012
and CERN-AB-2003-013-ABP
Coherent tune shifts measured with few bunches in the SPS and
comparison with resistive wall theory RPPB013
and CERN-AB-2003-014-ABP
EPAC 2002 (Paris)
contributions
(for the full EPAC use this
):
Coherent
Beam Oscillations and Transverse Impedance in the SPS
Background
Simulation for the CLIC Beam Delivery System with Geant
An
Energy Loss Measurement at HERA-p
CLIC
activities, EuroTeV htgen,
backgrounds, gamma-gamma option, muon pair generators
for
Geant4
Summary paper on Accelerator
Physics at LEP in Reports on Progress in Physics, June 2000,
local link
and a "Retrospective on LEP" in ICFA Beam Dynamics
Newsletter #48
April 2009
Summary paper on Backgrounds
at LEP, published in NIM, local link
Multi-TeV CLIC
Photon
Collider Option, SL-2000-070 AP, CLIC Note 463,
writeup
of contribution to GG2000
workshop
Beam Lifetime and
Beam Tails in LEP, writeup
of contribution to e+e- factories workshop 1999, KEK
International
Workshop
on Future e+e- Linear Colliders, 1999 Sitges (LCWS99)
my contribution: Machine Background common to all machines :
transparencies,
writeup
Here the
list of transparencies of all talks.
Collection of LEP
Beam-Dynamics
Parameters
Transverse
beam tails due to inelastic scattering , Phys. Rev. ST Accel.
Beams
3, 091001 (2000)
Study group for Elfe
at CERN
Work and papers on Beam
Lifetime including Monte Carlo Simulation of large cross section
processes,
relevant for Beam Lifetime and Background estimates (Beam-Beam
Bremsstrahlung,
Compton scattering on black-body radiation)
Monte Carlo
generation of the energy spectrum of synchrotron radiation, 8 June
2007, CERN-OPEN-2007-018;
CLIC-Note-709; EUROTEV-Report-2007-018
integrated in geant4,
G4SynchrotronRadiation.cc,
hh in processes/electromagnetic/xrays and documented in the physics
manual
previous stand alone version :
LEP Note 632 Monte
Carlo Generator for Synchrotron Radiation
17 Dec. 1990
LHC Note Reminder
of the Edge Effect in Synchrotron Radiation
Work and papers on alpha
QED.
PAC 1997 (Vancouver)
contributions:
Energy
Dependence of Beam-Beam
Interactions at LEP ,
Energy
Loss of Proton and
Lead Beams in the CERN-SPS,
Observation
and Simulation
of Beam Tails in LEP
ICFA workshop 1997 in Frascati
on "Beam
Dynamics
Issues for e+e- Factories",
my contribution: Beam-Beam
Interaction and Beam Lifetime in LEP;
EPAC 1996
(Sitges) contributions
(for the full EPAC use this
):
Beam Tails
and as part of the proceedings
LEP1 operation
Lead ion beam emittance
and transmission studies in the PS-SPS complex at CERN
CERN phone and
address
Find out more about me.