ILC undulator based RDR e+ source: Yields and Polarizations for QWT capturing and different drive beam energy: Wei Gai, Wanming Liu Argonne National Lab.,

Slides:

Advertisements

Similar presentations

Liverpool Accelerator Physics Group International Linear Collider (ILC) R&D The Cockcroft Institute The University of Liverpool is the lead organisation.

Advertisements

A Capture Section Design for the CLIC Positron Source A. VIVOLI* Thanks to: L. RINOLFI (CERN) R. CHEHAB (IPNL & LAL / IN2P3-CNRS) O. DADOUN, P. LEPERCQ,

ILC positron source simulation update Wanming Liu, Wei Gai ANL 03/20/2011.

ILC Positron Source Update Wei Gai Posipol ILC RDR baseline schematic (2007 IHEP meeting) Collimator OMD 150GeV e- ~147GeV e- Target TAP (~125MeV)

Using Realistic Photon Spectra Mike Jenkins Lancaster University and The Cockcroft Institute.

Friday 28 th April Review of the aims and recommendations from the workshop L. Rinolfi.

Simulations with ‘Realistic’ Photon Spectra Mike Jenkins Lancaster University and The Cockcroft Institute.

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

ILC Electron and Positron Sources Wei Gai for the ILC e- and e+ collaboration PAC review, 2012 KEK, Japan.

JCS e + /e - Source Development and E166 J. C. Sheppard, SLAC June 15, 2005.

On the Effect of Eddy Current Induced Field Wanming Liu, Sergey Antipov and Wei Gai HEP, ANL.

E166 Collaboration J.C. Sheppard SLAC, October, 2003 E166 Background Test Simulations: Overview-what do we need J. C. Sheppard.

Baseline Configuration - Highlights Barry Barish ILCSC 9-Feb-06.

E166 “Polarized Positrons for Future Linear Colliders” John C. Sheppard E166 Co-spokesman SLAC: August 31, 2004.

Liverpool Accelerator Physics Group International Linear Collider (ILC) R&D The Cockcroft Institute The University of Liverpool is the lead organisation.

Preliminary result on Quarter wave transformer simulation a short lens with a high magnetic field and a long solenoidal magnetic field. Field profile of.

3-March-06ILCSC Technical Highights1 ILC Technical Highlights Superconducting RF Main Linac.

Status of Undulator-based Positron Source Baseline Design Leo Jenner, but based largely on a talk given by Jim Clarke to Positron DESY-Zeuthen,

M. Woods (SLAC) Beam Diagnostics for test facilities of i)  ii) polarized e+ source January 9 –11, 2002.

Performance Studies on the Undulator Based ILC Positron Source Wei Gai ANL For ILC positron collaboration BAW II January 20, 2011,

16 th June 2008 POSIPOL 2008L. Rinolfi / CERN CLIC e + sources status L. Rinolfi with contributions from F. Antoniou, H. Braun, A. Latina, Y. Papaphilippou,

Undulator Based ILC Positron Source Studies Wei Gai Argonne National Laboratory CCAST ILC Accelerator Workshop Beijing, Nov 5 – 7, 2007.

Simulation of Positron Production and Capturing. W. Gai, W. Liu, H. Wang and K. Kim Working with SLAC & DESY.

Polarimetry at the LC Source Which type of polarimetry, at which energies for LC ? Sabine Riemann (DESY), LEPOL Group International Workshop on Linear.

Helical Undulator Based Positron Source for LC Wanming Liu 05/29/2013.

S2E optics design and particles tracking for the ILC undulator based e+ source Feng Zhou SLAC ILC e+ source meeting, Beijing, Jan. 31 – Feb. 2, 2007.

WG3a Sources Summary Jim Clarke on behalf of John Sheppard, Masao Kuriki, Philippe Piot and all the contributors to WG3a.

Key luminosity issues of the positron source Wei Gai.

Update on ILC Positron source study at ANL since the Durham/UK Meeting10/2010 Wan-Ming Liu, Wei Gai.

Current standing of the undulator based ILC positron source Wei Gai AWLC 14 FNAL, May

20 April 2009 AAP Review Global Design Effort 1 The Positron Source Jim Clarke STFC Daresbury Laboratory.

J.C. Sheppard, SLAC Americas Region September 27, ILC Positron TDR and R&D Meeting 1: Oxford ILC GDE Activities Update and Undulator Scheme Status.

Oct. 6, Summary of the Polarisation Session J. Clarke, G. Moortgat-Pick, S. Riemann 10 November 2006, ECFA Workshop, Valencia.

Spin Control and Transportation O. Adeyemi*, M. Beckmann**, V. Kovalenko*, L. Malysheva*, G. Moortgat-Pick*, S. Riemann**, A. Schälicke**, A. Ushakov**

CONVERSION EFFICIENCY AT 250 GeV A.Mikhailichenko Cornell University, LEPP, Ithaca, NY Presented at Positron Source Meeting Daresbury Laboratory,

Undulator Based ILC Positron Source Parameters Wei Gai ANL ALLCPG 2011 March 20, 2011,

17 th November, 2008 LCWS08/ILC08 1 BDS optics and minimal machine study Deepa Angal-Kalinin ASTeC & The Cockcroft Institute Daresbury Laboratory.

Positron source beamline lattice Wanming Liu, ANL

Ian Bailey Cockcroft Institute/ Lancaster University IWLC October 21 st, 2010 Overview of Undulator-Based Sources for LC.

R.Chehab/ R&D on positron sources for ILC/ Beijing, GENERATION AND TRANSPORT OF A POSITRON BEAM CREATED BY PHOTONS FROM COMPTON PROCESS R.CHEHAB.

10/02/2011 Global Design Effort 1 Positron Source meeting J. Clarke, D. Angal-Kalinin, N. Collomb.

Undulator based polarized positron source for Circular electron-positron colliders Wei Gai Tsinghua University/ANL a seminar for IHEP, 4/8/2015.

Update on ILC Production and Capturing Studies Wei Gai, Wanming Liu and Kwang-Je Kim ILC e+ Collaboration Meeting IHEP Beijing Jan 31 – Feb 2, 2007.

Capture and Transport Simulations of Positrons in a Compton Scheme Positron Source A. VIVOLI*, A. VARIOLA (LAL / IN2P3-CNRS), R. CHEHAB (IPNL & LAL / IN2P3-CNRS)

For Layout of ILC , revised K.Kubo Based on following choices. Positron source: Prepare both conventional and undulator based. Place the.

Positron Sources for Linear Colliders* Wei Gai JPOS 2009, Jefferson Lab, March 26, 2009 * Acknowledgement of contributions from the ILC and CLIC e+ collaborations.

28/03/20101 ILC – Central Integration SB 2009 Layout Interpretation of available data into CAD 3D virtual model to serve as true scale graphical representation.

Undulator Based ILC positron source for TeV energy Wanming Liu Wei Gai ANL April 20, 2011.

1 Positron Source AD & I Report Jim Clarke ASTeC & Cockcroft Institute Daresbury Laboratory.

Conventional source developments (300Hz Linac scheme and the cost, Part-II) Junji Urakawa, KEK PosiPol-2012 at DESY Zeuthen Contents : 0. Short review.

ILC Positron Production and Capturing Studies: Update Wei Gai, Wanming Liu and Kwang-Je Kim Posipol Workshop, Orsay, France May 23-25, 2007 Work performed.

Positron Source for Linear Collider Wanming Liu 2013 DOE Review.

Spin Tracking at the ILC Positron Source with PPS-Sim POSIPOL’11 V.Kovalenko POSIPOL’11 V. Kovalenko 1, G. Moortgat-Pick 1, S. Riemann 2, A. Ushakov 1.

Positron Source for Linear Collider Wanming Liu 04/11/2013.

ILC Positron Production and Capturing Studies: Update Wei Gai, Wanming Liu and Kwang-Je Kim ILC GDE Meeting DESY May 30 – Jun2, 2007 Work performed for.

1 Positron Source Configuration Masao KURIKI ILC AG meeting at KEK, 2006 Jan. Positron Source Configuration KURIKI Masao and John Sheppard  BCD Description.

Some Aspects on Compton Scheme Positron Source Study Wanming Liu ANL Tsunehiko OMORI KEK.

AD&I Meeting 23/6/10 Jim Clarke

Positron production rate vs incident electron beam energy for a tungsten target

Update on e+ Source Modeling and Simulation

Preliminary result of FCC positron source simulation Pavel MARTYSHKIN

Integration Ideas for the Central Region Some old some new

NC Accelerator Structures

ILC RDR baseline schematic (2007 IHEP meeting)

CLIC Main Beam Sources and their transfer lines

AD & I : BDS Lattice Design Changes

CLIC Undulator Option for Polarised Positrons

ILC RDR baseline schematic (2007 IHEP meeting)

Capture and Transmission of polarized positrons from a Compton Scheme

Capture Efficiency vs Spot Size

Presentation transcript:

ILC undulator based RDR e+ source: Yields and Polarizations for QWT capturing and different drive beam energy: Wei Gai, Wanming Liu Argonne National Lab., USA October 29, Durham University Sixth ILC e+ Collaboration Meeting

1: Quarter Wave Capturing Undulator: RDR undulator, K=0.92, u=1.15cm Length of undulator: 231m Target to end of undulator:400m Target: 0.4X0, Ti Drive beam energies: 50GeV to 250GeV

RDR undulator photon number spectrum

Drive beam energy YieldPolarization 50GeV GeV GeV GeV GeV Drive beam energy Energy lost per 100m Energy lost for 1.5 yield 50GeV~225MeVN/A 100GeV~900MeV~9.9GeV 150GeV~2GeV~4.6GeV 200GeV~3.6GeV~3.7GeV 250GeV~5.6GeV~3.96GeV Drive beam energy dependents (no collimation)

Drive beam energy Energy lost per 100m Energy lost for 1.5 yield and 60% polarization 150GeV~2GeV~8.8GeV Collimator effects

Drive beam energy YieldPolarization 100GeV GeV GeV GeV Drive beam energy Energy lost per 100m Energy lost for 1.5 yield 100GeV~900MeVN/A 150GeV~2GeV~8.9GeV 200GeV~3.6GeV~5.26GeV 250GeV~5.6GeV~4.7GeV Drive beam energy dependent for a fixed collimator.

Polarization dependents on Collimator for 200GeV drive beam energy Drive beam energy Energy lost per 100m Energy lost for 1.5 yield and 60% polarization 200GeV~3.6GeV~9.24GeV

Polarization dependents on Collimator for 250GeV drive beam energy Drive beam energy Energy lost per 100m Energy lost for 1.5 yield and 60% polarization 250GeV~5.6GeV~13.8GeV

2. Flux Concentrator RDR undulator: K=0.92, l u=1.15cm Length of undulator: 137m Target: 0.4X0 Ti, Non-immersed OMD: Flux concentrator, ramp up from 0.5T to over 3.5T in 2cm and decreased adiabatically down to background solenoid field 0.5T at z=14cm Acceleration gradient: 12.5MV/m Aperture of accelerator: 3cm in radius

Bz on axis of flux concentrator assumed

Drive beam energy Energy lost per 100m Energy lost for 1.5 yield 50GeV~225MeVN/A 100GeV~900MeV~6.37GeV 150GeV~2GeV~2.7GeV 200GeV~3.6GeV~2.21GeV 250GeV~5.6GeV~2.27GeV Drive beam energy YieldPolarization 50GeV GeV GeV GeV GeV Without Collimator

With Collimator Drive beam energy Energy lost per 100m Energy lost for 1.5 yield and 60% polarization 150GeV~2GeV~4.84GeV

3. Revisiting Scheme with Undulator after IP Current IP configuration: – 14 mr extraction (1.4 m offset for 100 m drift). – Beam energy and angle perturbed, but only slightly. (most beam < 5% energy spread and < 10 µrad?). Reasons to revisit this scheme – No-need to make up the energy loss for the drive beam. – Need beam collimation and dump anyway. – Undulator aperture ~ cm. Allow most of beam pass through. – Perturbed beam will have no detrimental effects on the positron production.

Schematic of the After IP Layout Collimator OMD 250GeV e+ ~240 GeV e- Target TAP (~125MeV) PPA( MeV) PBSTR (Cryo-modules for boosting energy up to 5GeV)  dump e- dump Damping ring helical undulator  IP Dump Collimation and Conditioning

Injection and extraction SLAC-pub-12856

Example Particle distribution after the collision IP Large portion of particles unperturbed. From Andrei Seryi

Issues to be resolved. Detailed particle distribution after the IP. Collimation of unwanted particles; undulator radiation damages, etc Impact on the dump and overall ILC layout. Others? Do we want to pursuit this option?