LCLS2sc MAD files: Injector to Bypass Line lattice version 1.2 (October 30, 2013)

Download LCLS2sc MAD files: Injector to Bypass Line lattice version 1.2 (October 30, 2013)

Post on 22-Feb-2016

21 views

Category:

Documents

0 download

Embed Size (px)

DESCRIPTION

LCLS2sc MAD files: Injector to Bypass Line lattice version 1.2 (October 30, 2013). A-line. SXU. proposed FACET-II. LCLS-II SC Linac. LCLS-I. extension line. c ross-over. L1. L2. L3. bypass line. H XU. m -wall. Sector-0. Sector-10. Sector-20. Sector-30. B -line. s (m). - PowerPoint PPT Presentation

TRANSCRIPT

PowerPoint Presentation

LCLS2sc MAD files: Injector to Bypass Linelattice version 1.2 (October 30, 2013)M. Woodley

SXUHXUproposed FACET-IILCLS-ILCLS-II SC Linaccross-overbypass linem-wallA-lineB-lineSector-10Sector-20Sector-30Sector-0extension lineL3L2L1

s (m)

new linac beam axis definedX= +0.28 m , Y= -0.99 m w.r.t. original linac axisZ= original linac Z-coordinateZ= 0 at start of LI01Z= -20 m at cathodeLCLS-II - Linac and Compressor Layout for 4 GeVCM01CM2,3CM04CM15CM16CM35BC1E = 250 MeVR56 = -55 mmsd = 1.4 %BC2E = 1600 MeVR56 = -60 mmsd = 0.46 %GUN0.75 MeVLHE = 95 MeVR56 = -14.5 mmsd = 0.05 %L0j = *V0 =94 MVIpk = 12 ALb = 2.0 mmL1j =-21V0 =223 MVIpk = 12 ALb =2.0 mmHLj =-165V0 =55 MVL2j = -21V0 =1447 MVIpk = 50 ALb = 0.56 mmL3j = 0V0 =2409 MVIpk = 1.0 kALb = 0.024 mmLTUE = 4.0 GeVR56 = 0sd 0.016%2-km100-pC machine layout: Oct. 8, 2013; v21 ASTRA run; Bunch length Lb is FWHM3.9GHzLinacSec.V(MV)j(deg)Acc. Grad. (MV/m)No. Cryo ModsNo. Avail.CavsSpare CavsCavities per AmplifierL094*13.21811L1220-2114.321611HL-55-16514.5312112L21447-2115.51296648L32409015.4201601048* L0 cav. phases: ~(3.4, -15.2, 0, 0, 0, 15, 15), with cav-2 at 22% of other L0 cavity gradients.Includes 2-km RW-wake

Egun = 750 KeVEinj = 98 MeVL0 :8 cavity cryomodule (layout courtesy XFEL Mad deck)gradients and phases per P. Emma layout (version of October 8, 2013)initial Twiss are artificialfinal Twiss from C. Papadopoulos ("GUN2013_10_08v3)

750 KeV98 MeV = 7.5435 m = -0.2173Gun + L0Matching + Laser Heater + L1

98 MeV250 MeVEinj = 98 MeVEBC1 = 250 MeV6 quadrupole matching section between L0 and Laser HeaterLaser Heater chicane:lengthened version of LCLS system (L= 3.529 m)max= 7.5 cm, R56= 14.5 mmX = Y = 10 m ( = 0) at center of chicaneincludes momentum collimatorspace for kicker (L= 2 m) and long drift (L= 8 m) provided for extraction to diagnostic lineL1 :2 x 8 cavity cryomodules (layout courtesy XFEL Mad deck) = -223 x 4 cavity harmonic linearizer cryomodules (3.9 GHz) = -16590 FODO lattice

BC1 + Betatron CollimationEBC1 = 250 MeVBC1 chicane :copy of LCLS systemR56= 55 mmsmall X at fourth bend (CSR)space for kicker (L= 2 m) and long drift ( 15 m total) provided for extraction to diagnostic linebetatron collimation system :2 x 90 FODO cells (Lcell 16 m) = 25 m at collimators (2 x horizontal collimation + 2 x vertical collimation)L2

250 MeV1.6 GeVEBC1 = 250 MeVEBC2 = 1.6 GeVL2 :12 x 8 cavity cryomodules (layout courtesy XFEL Mad deck) = -2130 FODO lattice

BC2 + Betatron CollimationEBC2 = 1.6 GeVBC2 chicane :copy of LCLS systemR56= 60 mmsmall X at fourth bend (CSR)space for kicker (L= 2.5 m) and long drift ( 30 m total) provided for extraction to diagnostic linebetatron collimation system :2 x 90 FODO cells (Lcell 24 m) = 38.4 m at collimators (2 x horizontal collimation + 2 x vertical collimation)L3 + Extension to LI10

1.6 GeV4.0 GeVEBC2 = 1.6 GeVEfinal = 4.0 GeVL3 :20 x 8 cavity cryomodules (layout courtesy XFEL Mad deck) = 015 FODO latticeL3 extension :4 x 90 FODO cells (Lcell= 45 m)at start of Bypass Dogleg, Z= 936.872 m ( 22.5 m into LI10)

Bypass Dogleg + Match to Bypass Line FODOEfinal = 4.0 GeVdogleg bending system :from X/Y = +0.28/-0.99 m to X/Y = -0.650494/+0.649478 m (X/Y = -0.37/+1.64 m)two 1.06 bends, rolled to 60.44 x 90 FODO cells (Lcell= 25.4) cancel dispersion in both planesmomentum collimator and wire scanner includedtotal Z-length = 102.5 mupdate compression parameters to latest version of P. Emma layoutuse M. Venturinis laser heater undulator parametersexchange X and Y collimators in HXR diagnostics sectionupload files to SharePoint siteMAD8 input filesMAD8 output filesELEGANT input filesgenerate upload files for Oracle DatabaseTo Do for Baseline releaseTo Do after Baseline releasereduce chromaticity of initial matching section (L0 to LH) and other sections identified by Pauldesign extraction systems and diagnostic lines (LH, BC1, BC2)more relaxed -functions in L2 and L3 (FFODDO rather than FODO?)add correctors, BPMs, and other diagnosticsmore

https://portal.slac.stanford.edu/sites/lcls_public/lcls_ii/beamline_optics/wiki_lib/Home.aspx