- Simple
theory of emittance sharing and exchange due to linear betatron coupling
(05/12/2001).
PRSTAB paper from A. Franchi et al. in 2007: Emittance sharing and
exchange driven by linear betatron coupling in circular accelerators 1
- High-intensity and high-density beams in the PS, CERN PPC meeting, 07/12/2001
- Measurements of the PS low-frequency inductive broad-band impedance (CERN PPC meeting, 14/12/2001)
- High-intensity studies at PS, CERN PPC meeting, 13/12/2002
- Stability criteria for high-intensity single-bunch beams in synchrotrons (Proc. of the 2002 EPAC) => Check of the TMCI formula by A. Burov and T. Zolkin in 2018 (TMCI with Resonator Wakes).
- The Batman instability of the HERA proton ring (CERN ABP forum, 09/02/2003) + EPAC2002 paper: Destabilising effect of linear couling in the HERA proton ring
- Stability of the longitudinal bunched-beam coherent modes (CERN ABP forum, 26/02/2003)
- Longitudinal microwave instability in lepton bunches (Proc. of the 2003 PAC)
- Coherent tune shift and stability diagram - with space charge (CERN RLC meeting, 26/09/2003)
- General formula for the resistive wall impedance derived from L. Vos' formalism (see also EPAC2004 paper)
- Will PS & SPS be ready for CNGS start-up in 2006? (CERN PS&SPS Days, 13-14/01/2005)
- Time evolution of SPS fast instability with HEADTAIL (CERN RLC meeting, 20/01/06)
- Fast vertical single-bunch instability at SPS injection (CERN APC meeting, 02/02/2006)
- Single-bunch and coupled-bunch instability in the LHC (CERN RLC meeting, 21/04/2006) and Coupled-bunch instability at LHC top energy for TCTVB (trapped modes) alone (CERN RLC meeting, 10/02/2006)
- Crossing Transition with TMCI (CERN RLC meeting, 19/09/2006)
- Status of the LHC beam in the PS: Stability issues (CERN APC meeting, 22/09/2006)
- Alternative bunch filling scheme for the LHC - Part II (Injector Complex) (LHCCWG, 14/02/2007)
- Transverse impedance of LHC collimators (PAC07, Albuquerque, New Mexico, USA, June 25-29, 2007) + paper
- SPS impedance (CARE-HHH-APD BEAM'07 workshop, CERN, 05/10/2007) + paper
- Ultimate LHC beam (CERN LIS meeting, 15/10/2007)
- TMCI in the SPS with HEADTAIL, MOSES and Laclare formalism (CERN LIS meeting, 15/10/2007)
- SPS measurements with IPMs in 2007, CERN APC meeting, 07/12/2007 (movies under Windows)
- TMCI far above the intensity threshold, CERN LIS meeting, 01/12/2008.
- Transition Crossing Requirements For PS2, PS2WGMeeting, 15-05-08
- Transition crossing requirements for PS2 (CERN PS2 Internal Review, 29/05/2008 )
- 1- and 2-wire transverse impedance measurement or simulation (CERN impedance meeting, 03/10/2008) and Procedures for frequency and time domain EM simulations in asymmetric structures (CERN impedance meeting, 19/11/2008)
- LMCI above and below transition, CERN Impedance meeting, 03/03/2010
- Beam screen issues (with 20 T dipole magnets instead of 8.3 T), EuCARD - AccNet mini workshop on a "High-Energy LHC" HE-LHC10, Malta, 15/10/2010 (+ paper)
- Pushing the limits - beam, Chamonix2011 workshop (+ paper)
- Head-Tail Instability Rise Time in Time and Frequency Domain (CERN, 02/03/2011)
- PSBBeamBrightnessIncreaseBy2_EM: 24-06-11 and 27-07-11
- 3BatchInjectionSchemeForLHCBeams_EM
- Beam-induced heating / bunch length / RF and lessons for 2012, Chamonix2012 workshop (+ paper)
- Collective effects in the LHC and its injectors, IPAC12 (+ paper)
- Sources of LHC instabilities (CERN LMC, 13/06/2012)
- Landau octupoles polarity (CERN LMC, 02/08/2012)
- Impedances, instabilities and implications for the future (CMAC#6, 16/08/2012)
- Collective effects: status and plan (2nd Joint HiLumi LHC-LARP Annual Meeting, Frascati, 14/11/2012)
- Review of the instabilities observed during the 2012 run and actions taken (Evian workshop, 17-20/11/2012) (+ paper)
- Outcome of the LRFF (LHC RF Fingers) Task Force in 2012 (CERN LMC, 27/11/2012) + IPAC13 paper: Lessons learnt and mitigation measures for the CERN LHC equipment with RF fingers
- Beam Induced RF Heating in the LHC (Diamond Light Source workshop, 30/01/2013)
- Head-Tail Instability Mode Numbers (2) in Time and Frequency Domain (CERN, 27/03/2013)
- RF considerations for the LHC TOTEM RPs (TOTEM collaboration week, CERN, 11/06/2013) => collabojun
- RF Heating from Wake Losses in Diagnostics Structures (IBIC2013, 16-19/09/2013) + paper
- Impedance and Component Heating (chapter 15 of a High Luminosity Book, 2013) => Links on the HL-LHC website: Impedance and Component Heating (chapter 15 of a High Luminosity LHC Book)
- Seminar on "Impedance studies for LHC and upgrades" at TU Darmstadt (02/12/2013)
- Impedance issues for the FCC-hh (CERN, 03/07/2014)
- Additional margins that could be gained by relaxing beta*: collective effects (CERN LMC, 03/09/2014). Follow-up after the meeting.
- Beam intensity limitations, 4th Joint HiLumi LHC-LARP Annual Meeting, KEK, Japan, 17-21/11/2014
- Measurement of the space charge tune spread with a quadrupolar pick-up: new (general) formula vs. "usual" one (CERN Space Charge meeting, 15/01/2015) => Slides published on CDS
- BCMS beams for LHC run II: Luminosity reach and beam production (CERN LMC, 18/02/2015)
- Distribution with tails more populated than a Gaussian (CERN HSC meeting, 09/03/2015)
- The HL-LHC operational scenarios: machine parameters, Joint HiLumi - LARP meting, FNAL, 12/05/2015 + CERN note: HL-LHC Operational Scenarios.
- Impedance update (other than Crab Cavities), Joint LARP CM26/Hi-Lumi Meeting, SLAC, 19/05/2016
- For discussion during the WBF session, Joint LARP CM26/Hi-Lumi Meeting, SLAC, 19/05/2016
- LHC: Status, Prospects and Future Challenges, LHCP2016, Lund University, Sweden, 13/06/2016 (+ paper)
- Measurement and Interpretation of Transverse Beam Instabilities in the CERN Large Hadron Collider (LHC) and Extrapolations to HL-LHC, Invited talk at HB2016, Malmo, Sweden (+ paper)
- General Formula to Deduce the Space Charge Tune Spread From a Quadrupolar Pick-Up Measurement, Poster at HB2016, Malmo, Sweden (+ paper)
- Shifts of the Head-Tail modes due to a constant inductive impedance (CERN HSC meeting, 08/08/2016)
- Stability diagrams from both Landau octupoles and Q" (CERN HSC meeting, 29/08/2016)
- High pile-up test (CERN LMC, 05/10/2016)
- Transverse damping requirements (Hi-Lumi Meeting, Paris, 15/11/2016)
- TMCI theory: decomposition on the low-intensity modes (CERN HSC meeting, 06/02/2017) + Some TMCI cases studied with different types of transverse dampers (CERN HSC meeting, 20/02/2017)
- Destabilising effect of the resistive transverse damper (CERN HSC meeting, 20/02/2017)
- Update of the HL-LHC operational scenarios for proton operation, CERN-ACC-NOTE-2018-0002
- Landau damping for TMCI, CERN HSC meeting, 19/03/2018 => Still a numerical issue to be solved...
- Destabilising effect of the LHC transverse damper, ABP group information meeting, CERN
- Destabilising effect of the LHC transverse damper, IPAC18 (+ poster)
- Status of transverse instabilities at high energy (CERN LMC, 18/04/2018)
- On the simple formula for SPS TMCI, CERN HSC meeting, 04/06/2018
- Space Charge and Transverse Instabilities at the CERN SPS and LHC, BNL seminar (NY, USA, 16/10/18) => See also Accelerator Physics Seminar at BNL (not accessible from outside BNL)
- Space Charge and Transverse Instabilities at the CERN SPS and LHC, ICAP18 (Key West, USA, 21/10/18) + paper
- Accelerator Science Education and Schools (ECFA meeting, CERN, 15/11/2018)
-
Summary of my 3 IPAC19 papers (CERN LIU-SPS BD WG, 17/01/2019): 1)
GALACTIC and GALACLIC: two Vlasov solvers for the transverse and
longitudinal planes; 2) Longitudinal Mode-Coupling Instability: GALACLIC
Vlasov solver vs. macroparticle tracking simulations (with M. Migliorati);
3) A two-mode model to study the effect of space charge on TMCI in the
"long-bunch" regime.
- Landau
damping with destabilising effect of LHC ADT and larger impedance than
expected (with two-mode model) (HSC meeting, CERN, 04/02/2019)
- HL-LHC
beam stability with positive Landau octupole polarity (WP2 meeting,
CERN, 05/02/2019)
- Impedance
models, operational experience and expected limitations (International
Review of the HL-LHC Collimation System, CERN, 11-12/02/2019)
- Beam
instability studies at CERN (seminar, TU Darmstadt, Germany, 13/05/2019)
- LMCI
and GALACLIC Vlasov Solver (ABP information meeting, 16/05/2019)
- Landau
damping for TMCI: with vs. without transverse damper
(CERN-ACC-NOTE-2019-0018)
- GALACTIC and GALACLIC: two Vlasov solvers for the transverse and longitudinal planes (IPAC19) + poster
- Longitudinal
mode-coupling instability: GALACLIC Vlasov solver vs. macroparticle
tracking simulations (IPAC19) + poster
- A two-mode model
to study the effect of space charge on TMCI in the "long-bunch" regime
(IPAC19) + poster
- Simple
model for the effect of the detuning impedance on beam stability (HSC
meeting, CERN, 17/06/2019)
- Destabilising effect of resistive transverse dampers (MCBI 2019 workshop, 26/09/19)
- Coherent beam instability studies at CERN (seminar at LBNL, Berkeley, CA, USA, 24/10/19)
- Intra-bunch motion for TMCI: a simple theoretical approach (HSC meeting, CERN, 09/12/2019). + Talk at the ABP info meeting (25/06/20)
- Intra-bunch motion for TMCI of high order modes (HSC meeting, CERN, 16/12/2019) + Qualitative comparison between a TMCI plot and an e-cloud instability from pyHT
- Intra-bunch motion (CERN-ACC-NOTE-2020-0018).
- Transverse Mode-Coupling Instability in the presence of detuning impedance (CERN-ACC-NOTE-2020-0019).
- Intra-bunch motion (LER2020 workshop, 27/10/2020).
- TMCI in the presence of detuning impedance (LER2020 workshop, 27/10/2020).
- Proceedings of the MCBI 2019 workshop.
- PRAB paper on Intrabunch motion.
- PRAB paper (submitted) on Imaginary Tune Split and Repulsion single-bunch instability mechanism in the presence of a resistive transverse damper and its mitigation.