CEPC Linac Injector. HEP Jan, Cai Meng, Guoxi Pei, Jingru Zhang, Xiaoping Li, Dou Wang, Shilun Pei, Jie Gao, Yunlong Chi
|
|
- Alannah Shaw
- 5 years ago
- Views:
Transcription
1 HKUST Jockey Club Institute for Advanced Study CEPC Linac Injector HEP Jan, 218 Cai Meng, Guoxi Pei, Jingru Zhang, Xiaoping Li, Dou Wang, Shilun Pei, Jie Gao, Yunlong Chi Institute of High Energy Physics, CAS, Beijing
2 Outline Introduction Main parameters Linac layout Positron source design Linac design Electron linac Positron linac Error study Summary
3 Outline Introduction Main parameters Linac layout Positron source design Linac design Electron linac Positron linac Error study Summary
4 Introduction Main parameters Linac design goal and principles Simplicity High Availability (necessary hot-standby backups,1%-2%) and Reliability Always providing beams that can meet requirements of Booster Parameter Symbol Unit Value e - /e + beam energy E e- /E e+ GeV 1 Repetition rate f rep Hz 1 e - /e + bunch population Ne-/Ne+ > nc >1.5 Energy spread (e - /e + ) σ E <2 1-3 Emittance (e - /e + ) ε r nm <12 e - beam energy on Target GeV 4 e - bunch charge on Target nc 1
5 Introduction Main parameters Layout Smaller emittance requirement possibility and high potential Damping Ring for positron linac Shorter damping time to damp the ejection beam of booster to the requirements Easy injection design and high efficiency Bunch charge Positron bunch charge decide the layout of linac and it s difficult to upgrade if not keep potential Enough allowance and high bunch charge requirement possibility or potential, designed 3 nc One-bunch-per-pulse Only short-range Wakefield need to be considered Frequency Collider: 65 MHz Booster: 13MHz Linac: MHz (s-band) MHz =3.25MHz MHz =3.25MHz 2MHz 13 MHz =3.25MHz 4MHz
6 Introduction Layout of Linac Linac tunnel total length ~ 12m ESBS ( Electron Source and Bunching System): 5 MeV && 3.3 nc for electron injection/ 11nC for positron production FAS (the First Accelerating Section): Electron beam to 4 GeV && 3 nc for electron injection/ 1nC for positron production PSPAS (Positron Source and Pre-Accelerating Section) Positron beam larger than 2 MeV && larger than 3 nc SAS (the Second Accelerating Section) Positron beam to 4 GeV && 3 nc TAS (the Third Accelerating Section) Electron/Positron beam to 1 GeV && 3 nc EBTL ( Electron By-pass Transport Line) Transport line bypass scheme
7 Outline Introduction Main parameters Linac layout Positron source design Linac design Electron linac Positron linac Error study Summary
8 Positron source Layout of PSPAS Layout of positron source Target: Rms electron beam size:.5mm AMD Length: 1mm Aperture: 8mm 26mm Capture & Pre-accelerating section Length:2 m Aperture: 25 mm Gradient: 22 MV/m Chicane Wasted electron separation Bunch length compression Magnetic field of the positron source and pre-accelerating section 5~6T.5T Bz (T) Bz (T) Position (mm) Position (m)
9 Positron source Target design SuperKEKB positron linac commissioning (3.3 GeV) 214, N(e+)/N(e-)~2% 215, N(e+)/N(e-)~3% [designed 5%] CEPC positron 8 Positron bunch charge > 3 nc Energy=2 GeV 7 Energy=3.6 GeV Electron beam: Energy=4 GeV 4GeV 6 1nC/bunch (maybe lower) 5 Electron beam: 4 kw 4 Energy deposition FLUKA W water cooling 1 Target length (mm) Target tungsten 15 mm Beam size:.5 mm N e +/N e target exit
10 Positron source Capture accelerating tubes Positron capture accelerating tube exit) within some energy range with different capture accelerating tube phase (or different input phase for pre-accelerating section) and different accelerating gradient Deceleration mode (D1) Acceleration mode (A1) 22 MV/m (Considering energy and positron yield, lower accelerating gradient have acceptable positron yield decrease) Gradient=1 MV/m Gradient=12 MV/m Gradient=14 MV/m Gradient=16 MV/m Gradient=18 MV/m D1 A1.7 Gradient=2 MV/m Gradient=22 MV/m.6 Gradient=24 MV/m N e +/N e Deceleration Acceleration.2.1 SuperKEKB Input phase (degree) Only energy cutoff EE < 15 MeV SuperKEKB commissioning results
11 Dynamic results of PSPAS Positron source Pre-accelerating section RF phase Norm. RMS. Emittance 25 mm-mrad Energy: >2 MeV Positron yield Ne+/Ne- ~=.55 [-6,14,235 MeV,265 MeV].3 X-Y X-Xp Norm.Rms.Emittance X&Y X.2 2 Y X(mm) X(mm) Y-Yp.5 Phase-E Phase 12 Z (cm) 2 Yp (mrad) 2 Beam power loss (W/cm) 1 15 Energy (MeV) E (MeV) N,rm s 25 Xp (mrad) 3 Y(mm) (mm-mrad) Z (cm) Z (cm) Energy (MeV) Y(mm) Phase (deg) 1
12 Positron source Parameters SLC LEP (LIL) KEKB/SUPER KEKB FCC-ee (conv.)* CEPC Incident e- beam energy 33 GeV 2 MeV 3.3/3.3 GeV 4.46 GeV 4 GeV e-/bunch [1 1 ] (2 ns pulse) 6.25/ Bunch/pulse 1 1 2/2 2 1 Rep. rate 12 Hz 1 Hz 5 Hz/5 Hz 2 Hz 1Hz Incident Beam power ~2 kw 1 kw (max) 3.3 kw 15 kw 4 kw Beam target mm < 2 mm />.7 mm.5 mm.5 mm Target thickness 6X 2X /4X 4.5X 4.3X Target size 7 mm 5 mm 14 mm 1mm Target Moving Fixed Fixed/Fixed Moving/Fixed Deposited power 4.4 kw /.6 kw 2.7 kw.78kw Capture system AMD λ/4 transformer /AMD AMD AMD Magnetic field 6.8T->.5T 1 T->.3T /4.5T->.4T 7.5T->.5T 6T->.5T Aperture of 1st cavity 18 mm 25mm/18 mm /3 mm 2 mm 25 mm Gradient of 1st cavity 3-4 MV/m ~1 MV/m /1 MV/m 3 MV/m 22 MV/m length of 1st cavity 1m 3m 2m 3m 2m Linac frequency MHz MHz MHz MHz MHz e+ CS exit ~1.6 e+/e- ~.3 e+/e- (linac exit) /~.5 e+/e- ~.7 e+/e- ~.55 e+/e- Tungsten radiation length X is.35 cm.
13 Outline Introduction Main parameters Linac layout Positron source design Linac design Electron linac Positron linac Error study Summary
14 Linac design Electron linac Focusing structure: Triplet Long drift length for accelerating tubes Beam size in Acc. tubes is small and easy control Same beam envelopes at X/Y planes 1 triplet+4 Acc. tubes 1 triplet+8 Acc. tubes Operation mode : High charge mode (positron production) 4GeV & 1 nc Low charge mode (electron injection) 1 GeV & 3 nc
15 Linac design Electron linac Positron production 1.4 High charge mode 1 nc && 4 GeV Energy spread (rms):.5% Emittance growth with errors Energy spread (%) 1 3 x, r m s y, r m s (%).8.6 r m s (nm) 1 2 Energy (GeV) s [m] Z (m) t (ps) X r m s X m a x Y r m s Y m a x Energy (GeV) 2 1 Beam size (mm) Z (m) Z (m)
16 Linac design Low charge mode 3 nc && 1 GeV Energy spread (rms):.15% Emittance (rms): 5 nm Electron linac Electron injection Energy spread (%) x, r m s y, r m s 1.14 (%).5 1 r m s (nm) 1 2 Energy (GeV) s [m] Z (m) t (ps) X r m s X m a x 8 Y r m s 1 Y m a x Energy (GeV) Beam size (mm) Z (m) Z (m)
17 Linac design Positron linac PSPAS SAS+TAS && Damping Ring SAS: 2 MeV 4 GeV Damping Ring: 1.1 GeV TAS: 4GeV 1 GeV Because of the larger emittance of positron beam, the lattice design of TAS is focused on positron beam, especially the transverse focusing structure.
18 Linac design Positron linac Transverse focusing structure FODO, nesting on Acc. tubes Triplet Positron linac Controlled β function Smaller beam size Need smaller β Longer period length Reduce quadrupole number Cause larger β (m) KLY SLED KLY SLED KLY SLED KLY SLED KLY SLED x y Z (m)
19 Linac design Positron linac Positron linac 3 nc && 1 GeV Energy spread (rms):.16% Emittance (rms): 4/24 nm (%) r m s (nm) x, r m s y, r m s Energy (GeV) s [m] Z (m) t (ps) X r m s X m a x 8 Y r m s 1 Y m a x Energy (GeV) Beam size (mm) Z (m) Z (m)
20 Linac design Damping Ring DR V1. Unit Value Energy GeV 1.1 Circumference M 58.5 Repetition frequency Hz 1 Bending radius M 3.6 Dipole strength B T 1.1 U kev 35.8 Damping time x/y/z Ms 12/12/6 δ %.49 ε mm.mrad 32 Nature σ z mm 7 (23ps) Extract σ z mm 7 (23ps) ε inj mm.mrad 25 ε ext x/y mm.mrad 716/471 δ inj /δ ext %.6/.7 Energy acceptance by % 1. RF f RF MHz 65 V RF MV 1.8
21 Error study Misalignment errors with correction Positron linac 5 seeds with correction 4 One-to-one correction scheme for each period Errors: Gaussian distribution, 3σ truncated Beam orbit RMS value<.3 mm Rms value<.1 mm (high energy part) Error description Unit Value Translational error mm.1 Rotation error mrad.2 Magnetic element field error %.1 BPM uncertainty mm.1 RMS beam orbit (mm) 6 X 5 Y Z (m)
22 Error study Misalignment errors with correction Electron linac First orbit correction + multi-particles simulation Low charge Beam orbit can be controlled well High charge Misalignments of Acc. Tubes BPM noisy Wakefield In operation, the orbit and emittance growth can be controlled better; Correction is based on multi-particles orbit Meet the requirements for positron production
23 Linac design Energy jitter Simulation condition 5 seeds Accelerating tubes phase errors and amp errors 4 in 1 KLY, 4 accelerating tubes in one group 3σ--Gaussian 15 Energy spread <.2% Phase errors:.5 degree (rms) Amp errors:.5% (rms) Energy jitter:.2% 25 =.1 deg && V e r r =.1% e r r 2 =.3 deg && V e r r =.5 deg && V e r r =.3% e r r =.5% e r r 1 15 =1 deg && V e r r e = 1% r r Probability (%) 5 Probability (%) (%) (%)
24 Linac design Status Parameter Symbol Unit Goal Status e - /e + beam energy E e- /E e+ GeV 1 1/1 Repetition rate f rep Hz 1 1 e - /e + bunch population Ne-/Ne+ > > Ne-/Ne+ nc >1.5 >3.* Energy spread (e - /e + ) σ E <2 1-3 e - : e + : Emittance@1GeV (e - /e + ) nm 12 e - : 5/ 5 e + : 4/24~12 e - beam energy on Target GeV 4 4 e - bunch charge on Target nc 1 1 * Enough allowance and high bunch charge requirement possibility or potential
25 Summary The physics design of CEPC Linac have been proposed and the simulated beam dynamics results can meet the requirements of Booster. The design of positron source have been proposed. Preliminary damping ring is proposed. There are no issue that defies solution for CEPC linac. Further optimization are undergoing.
26 Linac design Short-Range Wakefield k. Yokoya and K. bane s Wakefield model periodic linac structure k. Yokoya and K. bane, The longitudinal high-frequency impedance of a periodic accelerating structure, Proceedings of the 1999 IEEE Particle Accelerator Conference Vol. 3 pag. 1725, New York, March 1999
CERN EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH THE CLIC POSITRON CAPTURE AND ACCELERATION IN THE INJECTOR LINAC
CERN EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CLIC Note - 819 THE CLIC POSITRON CAPTURE AND ACCELERATION IN THE INJECTOR LINAC A. Vivoli 1, I. Chaikovska 2, R. Chehab 3, O. Dadoun 2, P. Lepercq 2, F.
More informationSLS at the Paul Scherrer Institute (PSI), Villigen, Switzerland
SLS at the Paul Scherrer Institute (PSI), Villigen, Switzerland Michael Böge 1 SLS Team at PSI Michael Böge 2 Layout of the SLS Linac, Transferlines Booster Storage Ring (SR) Beamlines and Insertion Devices
More informationFACET-II Design Update
FACET-II Design Update October 17-19, 2016, SLAC National Accelerator Laboratory Glen White FACET-II CD-2/3A Director s Review, August 9, 2016 Planning for FACET-II as a Community Resource FACET-II Photo
More informationILC Damping Ring Alternative Lattice Design **
ILC Damping Ring Alternative Lattice Design ** Yi-Peng Sun *,1,2, Jie Gao 1, Zhi-Yu Guo 2 1 Institute of High Energy Physics, CAS, Beijing 2 Key Laboratory of Heavy Ion Physics, Peking University, Beijing
More information6 Bunch Compressor and Transfer to Main Linac
II-159 6 Bunch Compressor and Transfer to Main Linac 6.1 Introduction The equilibrium bunch length in the damping ring (DR) is 6 mm, too long by an order of magnitude for optimum collider performance (σ
More informationLattice Design and Performance for PEP-X Light Source
Lattice Design and Performance for PEP-X Light Source Yuri Nosochkov SLAC National Accelerator Laboratory With contributions by M-H. Wang, Y. Cai, X. Huang, K. Bane 48th ICFA Advanced Beam Dynamics Workshop
More informationNotes on the HIE-ISOLDE HEBT
EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH HIE-ISOLDE-PROJECT-Note-13 Notes on the HIE-ISOLDE HEBT M.A. Fraser Abstract The HEBT will need to transfer the beam from the HIE-ISOLDE linac to up to four experimental
More informationBeam Optics design for CEPC collider ring
Beam Optics design for CEPC collider ring, Yuan Zhang, Yuanyuan Wei, Sha Bai, Dou Wang, Huiping Geng, Chenghui Yu, Jie Gao IHEP, Beijing 1st workshop on applications of high energy Circular Electron-Positron
More informationS2E (Start-to-End) Simulations for PAL-FEL. Eun-San Kim
S2E (Start-to-End) Simulations for PAL-FEL Aug. 25 2008 Kyungpook Nat l Univ. Eun-San Kim 1 Contents I Lattice and layout for a 10 GeV linac II Beam parameters and distributions III Pulse-to-pulse stability
More informationLinear Collider Collaboration Tech Notes
LCC 0035 07/01/00 Linear Collider Collaboration Tech Notes More Options for the NLC Bunch Compressors January 7, 2000 Paul Emma Stanford Linear Accelerator Center Stanford, CA Abstract: The present bunch
More informationFACET-II Design, Parameters and Capabilities
FACET-II Design, Parameters and Capabilities 217 FACET-II Science Workshop, October 17-2, 217 Glen White Overview Machine design overview Electron systems Injector, Linac & Bunch compressors, Sector 2
More informationLCLS Accelerator Parameters and Tolerances for Low Charge Operations
LCLS-TN-99-3 May 3, 1999 LCLS Accelerator Parameters and Tolerances for Low Charge Operations P. Emma SLAC 1 Introduction An option to control the X-ray FEL output power of the LCLS [1] by reducing the
More informationILC Damping Ring Alternative Lattice Design (Modified FODO)
ILC Damping Ring Alternative Lattice Design (Modified FODO) Yi-Peng Sun 1,2, Jie Gao 1, Zhi-Yu Guo 2 Wei-Shi Wan 3 1 Institute of High Energy Physics, CAS, China 2 State Key Laboratory of Nuclear Physics
More informationOn-axis injection into small dynamic aperture
On-axis injection into small dynamic aperture L. Emery Accelerator Systems Division Argonne National Laboratory Future Light Source Workshop 2010 Tuesday March 2nd, 2010 On-Axis (Swap-Out) injection for
More informationA 6 GeV Compact X-ray FEL (CXFEL) Driven by an X-Band Linac
A 6 GeV Compact X-ray FEL (CXFEL) Driven by an X-Band Linac Zhirong Huang, Faya Wang, Karl Bane and Chris Adolphsen SLAC Compact X-Ray (1.5 Å) FEL Parameter symbol LCLS CXFEL unit Bunch Charge Q 250 250
More informationStatus of linear collider designs:
Status of linear collider designs: Electron and positron sources Design overview, principal open issues G. Dugan March 11, 2002 Electron sourcesfor 500 GeV CM machines Parameter TESLA NLC CLIC Cycle rate
More informationLinear Collider Collaboration Tech Notes. Design Studies of Positron Collection for the NLC
LCC-7 August 21 Linear Collider Collaboration Tech Notes Design Studies of Positron Collection for the NLC Yuri K. Batygin, Ninod K. Bharadwaj, David C. Schultz,John C. Sheppard Stanford Linear Accelerator
More information1.5-GeV FFAG Accelerator as Injector to the BNL-AGS
1.5-GeV FFAG Accelerator as Injector to the BNL-AGS Alessandro G. Ruggiero M. Blaskiewicz,, T. Roser, D. Trbojevic,, N. Tsoupas,, W. Zhang Oral Contribution to EPAC 04. July 5-9, 5 2004 Present BNL - AGS
More informationLattice design and dynamic aperture optimization for CEPC main ring
Lattice design and dynamic aperture optimization for CEPC main ring Yiwei Wang, Feng Su, Sha Bai, Yuan Zhang, Dou Wang, Huiping Geng, Chenghui Yu, Jie Gao HKUST IAS conference, 23-26 Jan 2017 Outline Fully
More informationExperimental Measurements of the ORION Photoinjector Drive Laser Oscillator Subsystem
Experimental Measurements of the ORION Photoinjector Drive Laser Oscillator Subsystem D.T Palmer and R. Akre Laser Issues for Electron RF Photoinjectors October 23-25, 2002 Stanford Linear Accelerator
More information$)ODW%HDP(OHFWURQ6RXUFHIRU/LQHDU&ROOLGHUV
$)ODW%HDP(OHFWURQ6RXUFHIRU/LQHDU&ROOLGHUV R. Brinkmann, Ya. Derbenev and K. Flöttmann, DESY April 1999 $EVWUDFW We discuss the possibility of generating a low-emittance flat (ε y
More informationThe TESLA Dogbone Damping Ring
The TESLA Dogbone Damping Ring Winfried Decking for the TESLA Collaboration April 6 th 2004 Outline The Dogbone Issues: Kicker Design Dynamic Aperture Emittance Dilution due to Stray-Fields Collective
More informationLow slice emittance preservation during bunch compression
Low slice emittance preservation during bunch compression S. Bettoni M. Aiba, B. Beutner, M. Pedrozzi, E. Prat, S. Reiche, T. Schietinger Outline. Introduction. Experimental studies a. Measurement procedure
More informationShort Introduction to CLIC and CTF3, Technologies for Future Linear Colliders
Short Introduction to CLIC and CTF3, Technologies for Future Linear Colliders Explanation of the Basic Principles and Goals Visit to the CTF3 Installation Roger Ruber Collider History p p hadron collider
More informationTransverse dynamics Selected topics. Erik Adli, University of Oslo, August 2016, v2.21
Transverse dynamics Selected topics Erik Adli, University of Oslo, August 2016, Erik.Adli@fys.uio.no, v2.21 Dispersion So far, we have studied particles with reference momentum p = p 0. A dipole field
More informationInjector Linac and RF gun
Injector Linac and RF gun 1 Linac Overview Mission of electron/positron Injector in SuperKEKB u 40-times higher Luminosity v Twice larger storage beam à Higher beam current at Linac v 20-times higher collision
More informationPAL LINAC UPGRADE FOR A 1-3 Å XFEL
PAL LINAC UPGRADE FOR A 1-3 Å XFEL J. S. Oh, W. Namkung, Pohang Accelerator Laboratory, POSTECH, Pohang 790-784, Korea Y. Kim, Deutsches Elektronen-Synchrotron DESY, D-603 Hamburg, Germany Abstract With
More informationHIRFL STATUS AND HIRFL-CSR PROJECT IN LANZHOU
HIRFL STATUS AND HIRFL-CSR PROJECT IN LANZHOU J. W. Xia, Y. F. Wang, Y. N. Rao, Y. J. Yuan, M. T. Song, W. Z. Zhang, P. Yuan, W. Gu, X. T. Yang, X. D. Yang, S. L. Liu, H.W.Zhao, J.Y.Tang, W. L. Zhan, B.
More informationX-Band RF Harmonic Compensation for Linear Bunch Compression in the LCLS
SLAC-TN-5- LCLS-TN-1-1 November 1,1 X-Band RF Harmonic Compensation for Linear Bunch Compression in the LCLS Paul Emma SLAC November 1, 1 ABSTRACT An X-band th harmonic RF section is used to linearize
More informationSimulations for photoinjectors C.Limborg
Simulations for photoinjectors C.Limborg 1- GTF Simulations Parmela modeling improvements Comparison to experimental results: 2ps & 4ps Sensitivity study Plans for future simulations 2- LCLS Injector Simulations
More informationFirst propositions of a lattice for the future upgrade of SOLEIL. A. Nadji On behalf of the Accelerators and Engineering Division
First propositions of a lattice for the future upgrade of SOLEIL A. Nadji On behalf of the Accelerators and Engineering Division 1 SOLEIL : A 3 rd generation synchrotron light source 29 beamlines operational
More informationEmittance preservation in TESLA
Emittance preservation in TESLA R.Brinkmann Deutsches Elektronen-Synchrotron DESY,Hamburg, Germany V.Tsakanov Yerevan Physics Institute/CANDLE, Yerevan, Armenia The main approaches to the emittance preservation
More informationLongitudinal Top-up Injection for Small Aperture Storage Rings
Longitudinal Top-up Injection for Small Aperture Storage Rings M. Aiba, M. Böge, Á. Saá Hernández, F. Marcellini and A. Streun Paul Scherrer Institut Introduction Lower and lower horizontal emittances
More informationLow Energy RHIC electron Cooling (LEReC)
Low Energy RHIC electron Cooling (LEReC) LEReC overview: project goal and cooling approach Alexei Fedotov MEIC Collaboration Meeting 30 31 LEReC Project Mission/Purpose The purpose of the LEReC is to provide
More informationPositron Source using Channelling for the Baseline of the CLIC study
CLIC = Compact Linear Collider Positron Source using Channelling for the Baseline of the CLIC study Louis Rinolfi With contributions from: X. Artru 2, R. Chehab 2, O. Dadoun 3, E. Eroglu 4, K. Furukawa
More informationThe 2015 erhic Ring-Ring Design. Christoph Montag Collider-Accelerator Department Brookhaven National Laboratory
The 2015 erhic Ring-Ring Design Christoph Montag Collider-Accelerator Department Brookhaven National Laboratory The Relativistic Heavy Ion Collider RHIC Two superconducting storage rings 3833.845 m circumference
More informationStudies of Emittance Bumps and Adaptive Alignment method for ILC Main Linac
Studies of Emittance Bumps and Adaptive Alignment method for ILC Main Linac Nikolay Solyak #, Kirti Ranjan, Valentin Ivanov, Shekhar Mishra Fermilab 22-nd Particle Accelerator Conference, Albuquerque,
More informationLattice Design of 2-loop Compact ERL. High Energy Accelerator Research Organization, KEK Miho Shimada and Yukinori Kobayashi
Lattice Design of 2-loop Compact ERL High Energy Accelerator Research Organization, KEK Miho Shimada and Yukinori Kobayashi Introduction Wepromote the construction of the compact Energy Recovery Linac(cERL)
More informationBeam Feedback System Challenges at SuperKEKB Injector Linac
Beam Feedback System Challenges at SuperKEKB Injector Linac Kazuro Furukawa, Ryo Ichimiya, Masako. Iwasaki, Hiroshi Kaji, Fusashi Miyahara, Tatsuro Nakamura, Masanori Satoh, Tsuyoshi Suwada KEK, Japan
More informationLinac optimisation for the New Light Source
Linac optimisation for the New Light Source NLS source requirements Electron beam requirements for seeded cascade harmonic generation LINAC optimisation (2BC vs 3 BC) CSR issues energy chirp issues jitter
More informationIntroduction. Thermoionic gun vs RF photo gun Magnetic compression vs Velocity bunching. Probe beam design options
Introduction Following the 19/05/04 meeting at CERN about the "CTF3 accelerated programme", a possible french contribution has been envisaged to the 200 MeV Probe Beam Linac Two machine options were suggested,
More informationProposal to convert TLS Booster for hadron accelerator
Proposal to convert TLS Booster for hadron accelerator S.Y. Lee -- Department of Physics IU, Bloomington, IN -- NSRRC Basic design TLS is made of a 50 MeV electron linac, a booster from 50 MeV to 1.5 GeV,
More informationConceptual design of an accumulator ring for the Diamond II upgrade
Journal of Physics: Conference Series PAPER OPEN ACCESS Conceptual design of an accumulator ring for the Diamond II upgrade To cite this article: I P S Martin and R Bartolini 218 J. Phys.: Conf. Ser. 167
More informationLOLA: Past, present and future operation
LOLA: Past, present and future operation FLASH Seminar 1/2/29 Christopher Gerth, DESY 8/5/29 FLASH Seminar Christopher Gerth 1 Outline Past Present Future 8/5/29 FLASH Seminar Christopher Gerth 2 Past
More informationLinac Driven Free Electron Lasers (III)
Linac Driven Free Electron Lasers (III) Massimo.Ferrario@lnf.infn.it SASE FEL Electron Beam Requirements: High Brightness B n ( ) 1+ K 2 2 " MIN r #$ % &B! B n 2 n K 2 minimum radiation wavelength energy
More informationLIS section meeting. PS2 design status. Y. Papaphilippou. April 30 th, 2007
LIS section meeting PS2 design status Y. Papaphilippou April 30 th, 2007 Upgrade of the injector chain (R. Garoby, PAF) Proton flux / Beam power 50 MeV 160 MeV Linac2 Linac4 1.4 GeV ~ 5 GeV PSB SPL RCPSB
More informationSBF Accelerator Principles
SBF Accelerator Principles John Seeman SLAC Frascati Workshop November 11, 2005 Topics The Collision Point Design constraints going backwards Design constraints going forward Parameter relations Luminosity
More informationA Project to convert TLS Booster to hadron accelerator 1. Basic design. 2. The injection systems:
A Project to convert TLS Booster to hadron accelerator 1. Basic design TLS is made of a 50 MeV electron linac, a booster from 50 MeV to 1.5 GeV, and a storage ring. The TLS storage ring is currently operating
More informationDiagnostic Systems for Characterizing Electron Sources at the Photo Injector Test Facility at DESY, Zeuthen site
1 Diagnostic Systems for Characterizing Electron Sources at the Photo Injector Test Facility at DESY, Zeuthen site Sakhorn Rimjaem (on behalf of the PITZ team) Motivation Photo Injector Test Facility at
More informationIII. CesrTA Configuration and Optics for Ultra-Low Emittance David Rice Cornell Laboratory for Accelerator-Based Sciences and Education
III. CesrTA Configuration and Optics for Ultra-Low Emittance David Rice Cornell Laboratory for Accelerator-Based Sciences and Education Introduction Outline CESR Overview CESR Layout Injector Wigglers
More informationICFA ERL Workshop Jefferson Laboratory March 19-23, 2005 Working Group 1 summary Ilan Ben-Zvi & Ivan Bazarov
ICFA ERL Workshop Jefferson Laboratory March 19-23, 2005 Working Group 1 summary Ilan Ben-Zvi & Ivan Bazarov Sincere thanks to all WG1 participants: Largest group, very active participation. This summary
More informationTeV Scale Muon RLA Complex Large Emittance MC Scenario
TeV Scale Muon RLA Complex Large Emittance MC Scenario Alex Bogacz and Kevin Beard Muon Collider Design Workshop, BNL, December 1-3, 29 Outline Large Emittance MC Neuffer s Collider Acceleration Scheme
More informationSTATUS OF BEPC AND PLAN OF BEPCII
STATUS OF BEPC AND PLAN OF BEPCII C. Zhang for BEPCII Team Institute of High Energy Physics, P.O.Box 918, Beijing 139, China Abstract The status of the Beijing Electron-Positron Collider (BEPC) and plans
More informationAccelerator R&D Opportunities: Sources and Linac. Developing expertise. D. Rubin, Cornell University
Accelerator R&D Opportunities: Sources and Linac D. Rubin, Cornell University Electron and positron sources Requirements Status of R&D Linac Modeling of beam dynamics Development of diagnostic and tuning
More informationWG2 on ERL light sources CHESS & LEPP
Charge: WG2 on ERL light sources Address and try to answer a list of critical questions for ERL light sources. Session leaders can approach each question by means of (a) (Very) short presentations (b)
More informationMuon Front-End without Cooling
EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH Muon Front-End without Cooling CERN-Nufact-Note-59 K. Hanke Abstract In this note a muon front-end without cooling is presented. The muons are captured, rotated
More informationX-band Experience at FEL
X-band Experience at FERMI@Elettra FEL Gerardo D Auria Elettra - Sincrotrone Trieste GdA_TIARA Workshop, Ångström Laboratory, June 17-19, 2013 1 Outline The FERMI@Elettra FEL project Machine layout and
More informationLCLS Injector Straight Ahead Spectrometer C.Limborg-Deprey Stanford Linear Accelerator Center 8 th June 2005
LCLS Injector Straight Ahead Spectrometer C.Limborg-Deprey Stanford Linear Accelerator Center 8 th June 2005 Summary The spectrometer design was modified to allow the measurement of uncorrelated energy
More informationHigh gradient, high average power structure development at UCLA and Univ. Rome in X-X. band
High gradient, high average power structure development at UCLA and Univ. Rome in X-X and S-S band May 23-25, 25, 2007 US High Gradient Research Collaboration Workshop Atsushi Fukasawa, James Rosenzweig,
More informationNovel, Hybrid RF Injector as a High-average. Dinh Nguyen. Lloyd Young
Novel, Hybrid RF Injector as a High-average average-current Electron Source Dinh Nguyen Los Alamos National Laboratory Lloyd Young TechSource Energy Recovery Linac Workshop Thomas Jefferson National Accelerator
More informationIntroduction to Collider Physics
Introduction to Collider Physics William Barletta United States Particle Accelerator School Dept. of Physics, MIT The Very Big Picture Accelerators Figure of Merit 1: Accelerator energy ==> energy frontier
More informationRING-RING DESIGN. Miriam Fitterer, CERN - KIT for the LHeC study group
RING-RING DESIGN Miriam Fitterer, CERN - KIT for the LHeC study group LHeC Design Options LHeC Design Options Linac-Ring LHeC Design Options Linac-Ring Ring-Ring Point 4 P Z4 5 P M4 5 P X4 6 Point 5 P
More informationSPPS: The SLAC Linac Bunch Compressor and Its Relevance to LCLS
LCLS Technical Advisory Committee December 10-11, 2001. SPPS: The SLAC Linac Bunch Compressor and Its Relevance to LCLS Patrick Krejcik LCLS Technical Advisory Committee Report 1: July 14-15, 1999 The
More informationOverview of HEMC Scheme
Overview of HEMC Scheme R. B. Palmer, (BNL) JLab 2/28/2011 My birthday Progress on Cooling simulations New Acceleration sequence with higher transmission New System transmission estimate New Wall power
More informationAccelerator Physics Issues of ERL Prototype
Accelerator Physics Issues of ERL Prototype Ivan Bazarov, Geoffrey Krafft Cornell University TJNAF ERL site visit (Mar 7-8, ) Part I (Bazarov). Optics. Space Charge Emittance Compensation in the Injector
More informationPretzel scheme of CEPC
Pretzel scheme of CEPC H. Geng, G. Xu, Y. Zhang, Q. Qin, J. Gao, W. Chou, Y. Guo, N. Wang, Y. Peng, X. Cui, T. Yue, Z. Duan, Y. Wang, D. Wang, S. Bai, F. Su HKUST, Hong Kong IAS program on High Energy
More informationX-band RF driven hard X-ray FELs. Yipeng Sun ICFA Workshop on Future Light Sources March 5-9, 2012
X-band RF driven hard X-ray FELs Yipeng Sun ICFA Workshop on Future Light Sources March 5-9, 2012 Motivations & Contents Motivations Develop more compact (hopefully cheaper) FEL drivers, L S C X-band (successful
More informationLinear Collider Collaboration Tech Notes. A New Structure for the NLC Positron Predamping Ring Lattice
Linear Collider Collaboration Tech Notes LCC-0066 CBP Tech Note - 233 June 2001 A New Structure for the NLC Positron Predamping Ring Lattice A. Wolski Lawrence Berkeley National Laboratory Berkeley, CA
More informationSRF GUN CHARACTERIZATION - PHASE SPACE AND DARK CURRENT MEASUREMENTS AT ELBE*
SRF GUN CHARACTERIZATION - PHASE SPACE AND DARK CURRENT MEASUREMENTS AT ELBE* E. Panofski #, A. Jankowiak, T. Kamps, Helmholtz-Zentrum Berlin, Berlin, Germany P.N. Lu, J. Teichert, Helmholtz-Zentrum Dresden-Rossendorf,
More informationBeam Dynamics. Gennady Stupakov. DOE High Energy Physics Review June 2-4, 2004
Beam Dynamics Gennady Stupakov DOE High Energy Physics Review June 2-4, 2004 Beam Dynamics Research in ARDA Broad expertise in many areas: lattice design, collective effects, electron cloud, beam-beam
More informationCompressor Lattice Design for SPL Beam
EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN A&B DIVISION AB-Note-27-34 BI CERN-NUFACT-Note-153 Compressor Lattice Design for SPL Beam M. Aiba Abstract A compressor ring providing very short proton
More informationOverview of Acceleration
Overview of Acceleration R B Palmer, Scott Berg, Steve Kahn (presented by Steve Kahn) Nufact-04 RF Frequency Acc types and System Studies Linacs RLA s FFAG s Injection/Extraction US Study 2a acceleration
More informationGeneral Considerations
Advantages of Muons Advantages of leptons over hadrons Energetic Interaction simplicity Minimal synchrotron radiation at high energies Can bend: not forced to linac like e Reuse accelerating structures
More informationLattice Design for the Taiwan Photon Source (TPS) at NSRRC
Lattice Design for the Taiwan Photon Source (TPS) at NSRRC Chin-Cheng Kuo On behalf of the TPS Lattice Design Team Ambient Ground Motion and Civil Engineering for Low Emittance Electron Storage Ring Workshop
More informationCEPC and FCCee parameters from the viewpoint of the beam-beam and electron cloud effects. K. Ohmi (KEK) IAS-HEP, HKUST, Hong Kong Jan.
CEPC and FCCee parameters from the viewpoint of the beam-beam and electron cloud effects K. Ohmi (KEK) IAS-HEP, HKUST, Hong Kong Jan. 22-25, 2018 CEPC Parameters Y. Zhang, CEPC conference Nov. 2017, IHEP
More informationDark Current at Injector. Jang-Hui Han 27 November 2006 XFEL Beam Dynamics Meeting
Dark Current at Injector Jang-Hui Han 27 November 2006 XFEL Beam Dynamics Meeting Considerations for the guns Ultra-low slice emittance of electron beams higher gradient at the gun cavity solenoid field
More informationSimulation for choice of RF phase and RF jitters in the main linac
Simulation for choice of RF phase and RF jitters in the main linac 1998.12. Kiyoshi Kubo 1. Parameter of the linac Parameters for CMS energy 1TeV case B in the table Pre-ISG2 Parameters are used except
More informationOptics considerations for
Optics considerations for ERL x-ray x sources Georg H. Hoffstaetter* Physics Department Cornell University Ithaca / NY Georg.Hoffstaetter@cornell.edu 1. Overview of Parameters 2. Critical Topics 3. Phase
More informationShort Pulse, Low charge Operation of the LCLS. Josef Frisch for the LCLS Commissioning Team
Short Pulse, Low charge Operation of the LCLS Josef Frisch for the LCLS Commissioning Team 1 Normal LCLS Parameters First Lasing in April 10, 2009 Beam to AMO experiment August 18 2009. Expect first user
More informationDesign Status of the PEFP RCS
Design Status of the PEFP RCS HB2010, Morschach, Switzerland J.H. Jang 1) Y.S. Cho 1), H.S. Kim 1), H.J. Kwon 1), Y.Y. Lee 2) 1) PEFP/KAERI, 2) BNL (www.komac.re.kr) Contents PEFP (proton engineering frontier
More informationAn Optimization of Positron Injector of ILC
An Optimization of Positron Injector of ILC Masao KURIKIa)b), J. Urakawab), M. Satohb), and S. Kashiwagic) a)adsm, Hiroshima Uniersity, b)kek, c)rceps, Tohoku University BeamPhysics WS 2013 in OIST, Okinawa
More informationILC Particle Sources -Electron and PositronMasao KURIKI (Hiroshima University)
ILC Particle Sources -Electron and PositronMasao KURIKI (Hiroshima University) Introduction Electron Polarization is important for ILC. NEA GaAs is practically the only solution. Positron polarization
More informationThomX Machine Advisory Committee. (LAL Orsay, March ) Ring Beam Dynamics
ThomX Machine Advisory Committee (LAL Orsay, March 20-21 2017) Ring Beam Dynamics A. Loulergue, M. Biagini, C. Bruni, I. Chaikovska I. Debrot, N. Delerue, A. Gamelin, H. Guler, J. Zang Programme Investissements
More informationOverview of Energy Recovery Linacs
Overview of Energy Recovery Linacs Ivan Bazarov Cornell High Energy Synchrotron Source Talk Outline: Historical Perspective Parameter Space Operational ERLs & Funded Projects Challenges ERL Concept: conventional
More informationAlignment requirement for the SRF cavities of the LCLS-II injector LCLSII-TN /16/2014
Alignment requirement for the SRF cavities of the LCLS-II injector LCLS-II TN-14-16 12/16/2014 R. K. Li, C. Papadopoulos, T. O. Raubenheimer, J. F. Schmerge, and F. Zhou December 16, 2014 LCLSII-TN-14-16
More informationCompressor Ring. Contents Where do we go? Beam physics limitations Possible Compressor ring choices Conclusions. Valeri Lebedev.
Compressor Ring Valeri Lebedev Fermilab Contents Where do we go? Beam physics limitations Possible Compressor ring choices Conclusions Muon Collider Workshop Newport News, VA Dec. 8-1, 8 Where do we go?
More informationCSR Benchmark Test-Case Results
CSR Benchmark Test-Case Results Paul Emma SLAC January 4, 2 BERLIN CSR Workshop Chicane CSR Test-Case Chicane parameters symbol value unit Bend magnet length (not curved length) L B.5 m Drift length (projected;
More informationParameter selection and longitudinal phase space simulation for a single stage X-band FEL driver at 250 MeV
Parameter selection and longitudinal phase space simulation for a single stage X-band FEL driver at 25 MeV Yipeng Sun and Tor Raubenheimer, Juhao Wu SLAC, Stanford, CA 9425, USA Hard x-ray Free electron
More information7th IPAC, May 8-13, 2016, Busan, Korea
7th IPAC, May 8-13, 2016, Busan, Korea ER@CEBAF A High-Energy, Multiple-Pass, Energy Recovery Experiment at CEBAF On behalf of the JLab-BNL ER@CEBAF collaboration : I. Ben-Zvi, Y. Hao, P. Korysko, C. Liu,
More informationLow energy electron storage ring with tunable compaction factor
REVIEW OF SCIENTIFIC INSTRUMENTS 78, 075107 2007 Low energy electron storage ring with tunable compaction factor S. Y. Lee, J. Kolski, Z. Liu, X. Pang, C. Park, W. Tam, and F. Wang Department of Physics,
More informationStatus of linear collider designs:
Status of linear collider designs: Main linacs Design overview, principal open issues G. Dugan March 11, 2002 Linear colliders: main linacs The main linac is the heart of the linear collider TESLA, NLC/JLC,
More informationASSESMENT OF OPPORTUNITY FOR A COLLINEAR WAKEFIELD ACCELERATOR FOR A MULTI BEAMLINE SOFT X-RAY FEL FACILITY
ASSESMENT OF OPPORTUNITY FOR A COLLINEAR WAKEFIELD ACCELERATOR FOR A MULTI BEAMLINE SOFT X-RAY FEL FACILITY W. Gai, C. Jing, A. Kanareikin, C. Li, R. Lindberg, J. Power, D. Shchegolkov, E. Simakov, Y.
More informationPolarized electron and positron beams at CEPC
Polarized electron and positron beams at CEPC Zhe Duan Institute of High Energy Physics, CAS Presented at mini-workshop on Beam polarization in future colliders IAS-HKUST, HK, Jan 18, 2019 zhe.duan@ihep.ac.cn
More informationIFMIF High energy beam line design and beam expansion using non-linear multipole lenses and "step-like" magnet
IFMIF High energy beam line design and beam expansion using non-linear multipole lenses and "step-like" magnet N. Chauvin 1 R. Duperrier 1 P.A.P. Nghiem 1 J. Y. Tang 2 D. Uriot 1 Z.Yang 2 1 Commissariat
More informationInternational Scientific Spring 2010, March 1-6, 1. R. Garoby. slhc
International Scientific Spring 2010, March 1-6, 1 2010 R. Garoby slhc 1. Plans for future LHC injectors 2. Implementation stages 3. Final words R.G. 2 3/10/2009 R.G. 3 3 3/10/2009 Motivation 1. Reliability
More informationThe Booster has three magnet systems for extraction: Kicker Ke, comprising two identical magnets and power supplies Septum Se
3.2.7 Booster Injection and Extraction 3.2.7.1 Overview The Booster has two magnet systems for injection: Septum Si Kicker Ki The Booster has three magnet systems for extraction: Kicker Ke, comprising
More informationIssues of Electron Cooling
Issues of Electron Cooling Yaroslav Derbenev derbenev@jlab.org JLEIC Spring 2016 Collaboration Meeting JLab, March 29-31, 2016 Outline Friction force Magnetized cooling Misalignment impact Cooling rates
More informationMultiparameter optimization of an ERL. injector
Multiparameter optimization of an ERL injector R. Hajima a, R. Nagai a a Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki 319 1195 Japan Abstract We present multiparameter optimization of an
More informationCurrent and Future Developments in Accelerator Facilities. Jordan Nash, Imperial College London
Current and Future Developments in Accelerator Facilities Jordan Nash, Imperial College London Livingston chart (circa 1985) Nearly six decades of continued growth in the energy reach of accelerators Driven
More informationAccelerator Physics. Accelerator Development
Accelerator Physics The Taiwan Light Source (TLS) is the first large accelerator project in Taiwan. The goal was to build a high performance accelerator which provides a powerful and versatile light source
More information