April 6th 2009Olympus Meeting at DESY, F.Brinker1 Vacuum system Available beam scraper Beam dimensions, Target cell Machine Studies on February 7 th 2009.

Slides:

Advertisements

Similar presentations

Page 1 Collider Review Retreat February 24, 2010 Mike Spata February 24, 2010 Collider Review Retreat International Linear Collider.

Advertisements

1 Accelerator Physics Aspects LHCb Accelerator Physics Aspects LHCb CERN SL/AP n Layout n Crossing Scheme n Luminosity n Collision.

Study of the Luminosity of LHeC, a Lepton Proton Collider in the LHC Tunnel CERN June F. Willeke, DESY.

Design and Performance Expectation of ALPHA accelerator S.Y. Lee, IU 2/26/ Introduction 2. Possible CIS re-build and parameters 3. Issues in the.

September 15th 2009Olympus technical review at DESY, F.Brinker1 DORIS storage ring Olympus in the IP-region Beam optic, changes on the lattice Beam dimensions,

PEP-II B Factory Machine Status and Upgrades John T. Seeman for the PEP-II Staff SLAC DOE Site Review April 9, 2003.

F.Brinker, DESY, July 17 st 2008 Injection to Doris and Petra Fitting the detector in the IP-region Radiation issues Beam optic, Target cell Polarisation.

Prepare DORIS for particle physics again F.Brinker, DESY, March 31 st 2008 Injector chain to Doris and Petra Situation at the IP-region Beam optic Work.

Luminosity Prospects of LHeC, a Lepton Proton Collider in the LHC Tunnel DESY Colloquium May F. Willeke, DESY.

July 22, 2005Modeling1 Modeling CESR-c D. Rubin. July 22, 2005Modeling2 Simulation Comparison of simulation results with measurements Simulated Dependence.

DORIS - 2 GeV Experiences in 2011 Olympus Collaboration Meeting April 27th, 2011 F.Brinker.

Impedance measurements at SLS E. Koukovini-Platia CERN, EPFL TIARA mid-term meeting, Madrid, 13 th June 2012 Many thanks to M. Dehler, N. Milas, A. Streun.

Beam-Beam Optimization for Fcc-ee at High Energies (120, 175 GeV) at High Energies (120, 175 GeV) Dmitry Shatilov BINP, Novosibirsk 11 December 2014, CERN.

Future Very High Luminosity Options for PEP-II John T. Seeman For the PEP-II Team e+e- Factories Workshop October 13-16, 2003.

1 Flux concentrator for SuperKEKB Kamitani Takuya IWLC October.20.

CASA Collider Design Review Retreat HERA The Only Lepton-Hadron Collider Ever Been Built Worldwide Yuhong Zhang February 24, 2010.

SiriusUVX LNLS – National Synchrotron Light Laboratory CNPEM – Brazilian Center for Research on Energy and Materials A R Rodrigues, M Lisboa, R Madacki.

Lattice DSB (new version in progress) S. Guiducci Webex 8 February 2011.

ERHIC design status V.Ptitsyn for the eRHIC design team.

Multibunch beam stability in damping ring (Proposal of multibunch operation week in October) K. Kubo.

28-May-2008Non-linear Beam Dynamics WS1 On Injection Beam Loss at the SPring-8 Storage Ring Masaru TAKAO & J. Schimizu, K. Soutome, and H. Tanaka JASRI.

Damping Ring Parameters and Interface to Sources S. Guiducci BTR, LNF 7 July 2011.

PSB dump replacement 17 th November 2011 LIU-PSB meeting Alba Sarrió.

Accelerator Vacuum Systems at DESY M.Seidel, DESY Workshop on Vacuum Systems of Synchrotron Light Sources Barcelona,

Emittances Normalised r.m.s. Emittances at Damping Ring Extraction Horizontal Emittance (  m) Vertical Emittance (  m)

February 5, 2005D. Rubin - Cornell1 CESR-c Status -Operations/Luminosity -Machine studies -Simulation and modeling -4.1GeV.

The Introduction to CSNS Accelerators Oct. 5, 2010 Sheng Wang AP group, Accelerator Centre,IHEP, CAS.

Beam Physics Issue in BEPCII Commisionning Xu Gang Accelerator physics group.

PETRA III, A New High Brilliant Light Source At DESY

Future Circular Collider Study Kickoff Meeting CERN ERL TEST FACILITY STAGES AND OPTICS 12–15 February 2014, University of Geneva Alessandra Valloni.

CEPC Booster Zhang Chuang, Cui Xiaohao September 11,2015.

ICFA Workshop on Future Light Source, FLS2012 M. Shimada A), T. Miyajima A), N. Nakamura A), Y. Kobayashi A), K. Harada A), S. Sakanaka A), R. Hajima B)

Pushing the space charge limit in the CERN LHC injectors H. Bartosik for the CERN space charge team with contributions from S. Gilardoni, A. Huschauer,

Damping Ring Specifications S. Guiducci ALCPG11, 20 March 2011.

Low Emittance Rings 2014 Workshop INFN-LNF, 18. September 2014 Low Emittance Studies at 3 GeV at PETRA III Joachim Keil DESY.

Workshop on Accelerator R&D for Ultimate Storage Rings – Oct Nov.1 – Huairou, Beijing, China A compact low emittance lattice with superbends for.

Single particle dynamics in the ThomX ring Jianfeng zhang 12/02/2015 LAL.

Optics with Large Momentum Acceptance for Higgs Factory Yunhai Cai SLAC National Accelerator Laboratory Future Circular Collider Kick-off Meeting, February.

Jørgen S. Nielsen Center for Storage Ring Facilities (ISA) Aarhus University Denmark ESLS XXIII (24-25/ ), ASTRID2 facility 1.

ESLS Workshop Nov 2015 MAX IV 3 GeV Ring Commissioning Pedro F. Tavares & Åke Andersson, on behalf of the whole MAX IV team.

Halo Collimation of Protons and Heavy Ions in SIS-100.

Operation Status of the RF Systems and Taiwan Photon Source

Collimation Concept for Beam Halo Losses in SIS 100

Test of Optical Stochastic Cooling in CESR

NSLS-II Lattice Design Strategies Weiming Guo 07/10/08

Beam-beam effects in eRHIC and MeRHIC

CLIC Damping ring beam transfer systems

Physics design on Injector-1 RFQ

Saturday 21st April 00:33 Interlock during ramp on BLM HV

Electron cloud and collective effects in the FCC-ee Interaction Region

Multiturn extraction for PS2

Fast Kicker R&D at ATF T.Naito(KEK) TILC09 18/April/ /11/27.

CASA Collider Design Review Retreat Other Electron-Ion Colliders: eRHIC, ENC & LHeC Yuhong Zhang February 24, 2010.

The new 7BA design of BAPS

The design of interaction region

Capture and Transmission of polarized positrons from a Compton Scheme

DA Study for the CEPC Partial Double Ring Scheme

The LHC25ns cycle in the PS Triple splitting after 2nd injection

CEPC Injector Damping Ring

Cui Xiaohao, Bian Tianjian, Zhang Chuang 2017/11/07

LHC (SSC) Byung Yunn CASA.

Interaction Region Design Options e+e- Factories Workshop

Status of CTC activities for the Damping rings

BEPCII Background Issues: Collimators and Masks

PEPX-type BAPS Lattice Design and Beam Dynamics Optimization

PSB magnetic cycle 900 ms MeV to 2 GeV

Injection design of CEPC

CDR2 – Injection System Injection system overview (Seeman) (2 pages)

HE-JLEIC: Boosting Luminosity at High Energy

Fanglei Lin, Yuhong Zhang JLEIC R&D Meeting, March 10, 2016

Presentation transcript:

April 6th 2009Olympus Meeting at DESY, F.Brinker1 Vacuum system Available beam scraper Beam dimensions, Target cell Machine Studies on February 7 th 2009 Further machine studies DORIS

April 6th 2009Olympus Meeting at DESY, F.Brinker2 Straight section from the arc to the IP Vertical scraper Horizontal scraper Main source of synchrotron radiation Horizontal scraper

April 6th 2009Olympus Meeting at DESY, F.Brinker3 Horizontal and vertical scraper Water cooled copper rod, 30mm diam.

April 6th 2009Olympus Meeting at DESY, F.Brinker4 Acceptance and Beam sizes at 4.5 GeV ( σ~E ) The acceptance, defined by existing aperture limitations, is a bit larger than the space needed for the injection

April 6th 2009Olympus Meeting at DESY, F.Brinker5 Vacuum system current position to be removed new position current position new position valves Adapter chambers

April 6th 2009Olympus Meeting at DESY, F.Brinker6 Geometry of new IP region may be a bit more

April 6th 2009Olympus Meeting at DESY, F.Brinker7 Machine studies on February 7 th Injection into 10 bunches Final current 170 mA after 6 minutes Varying efficiency – probably due to effects at DESY: DESY operated at normal maximum energy of 4.5 GeV At 2.3 GeV the beam is not fully damped to its equilibrium emittance Possibly beam blow up due to resonances Room for improvements: New power supplies with higher stability Extraction when beam is decelerated Optimization of top energy

April 6th 2009Olympus Meeting at DESY, F.Brinker8 Machine studies on February 7 th Stored beam with good conditions: I = 150 mA Lifetime = 8.5 hours Not so nice: Longitudinal beam excitation (oscillation with ~1cm Amplitude) Limits lifetime at higher currents maybe increased particle background

April 6th 2009Olympus Meeting at DESY, F.Brinker9 Vacuum pressure in cavities 3.1/3.2 Observation: Pressure increase at cavities 3.1/3.2 Probable explanation: The high bunch currents excite a higher order mode in these cavities – leading both to an pressure increase and a longitudinal beam excitation

April 6th 2009Olympus Meeting at DESY, F.Brinker10 Longitudinal oscillations at 4.5 GeV Increased cavity temperature Test: reduced temperature of Cav. 3.2

April 6th 2009Olympus Meeting at DESY, F.Brinker11 Further machine studies in 2009/10: Injection at 2.3 / 2.0 GeV –Maximize transport line transmission –Optimize DESY parameter –Try to eject during deceleration Longitudinal Oscillations –Effect of cav. temperatures at 4.5 GeV –Installation of second RF-amplifier for long. FB ( July 2009 ) –Repeat measurements at 2.3 / 2.0 GeV Scraper studies ( with background counters ? ) –Simulate dimensions of target cell –Verify beam sizes/ acceptance with scrapers at low energies –Injection tests with closed scrapers ( background spikes? )