! *** OPTICS=LCLS2sc14FEB18 *** ! LCLS2sc common parameters ! ============================================================================== ! Modification History ! ------------------------------------------------------------------------------ ! 24-JAN-2018, M. Woodley ! * change length of BCS protection collimators (PCs) in spreader from 30 cm ! to 5.08 cm (2") ! 05-DEC-2017, M. Woodley ! * add BEGHXTES, ENDHXTES, BEGSXTES, ENDSXTES MARKers ! ------------------------------------------------------------------------------ ! 06-SEP-2017, Y. Nosochkov ! * update spreader kicker gap GBKSP to 20 mm (= 10 mm beam aperture + ! 10 mm pipe walls) (T. Beukers) ! ------------------------------------------------------------------------------ ! 28-NOV-2016, M. Woodley ! * replace BEGCOL2/ENDCOL2 with BEGEMIT2/ENDEMIT2 ! ------------------------------------------------------------------------------ ! 04-NOV-2016, M. Woodley ! * change "1.259Q3.5" to "1.26Q3.5" ! * change Everson-Tesla 2.362Q3.5 (r=30mm) to SigmaPhi 1.69Q3.4 (bore=43mm) ! 02-NOV-2016, Y. Nosochkov ! * move definition of DRFB drift to LTU.xsif ! * remove no longer used definition of SPhOFF ! * add markers BEGSPD3, ENDSPD3 ! * add kicker switches for DASEL ! ------------------------------------------------------------------------------ ! 12-FEB-2016, M. Woodley ! * add FFTB sextupole definitions (for 2nd-order dispersion correction) ! ------------------------------------------------------------------------------ ! 01-OCT-2015, M. Woodley ! * add SETDG0 ... switch beam between straight-ahead (DG0OFF) and DIAG0 line ! (DG0ON) ! 25-SEP-2015, Y. Nosochkov ! * add deflector switches for CUSXR and A-line ! 28-AUG-2015, M. Woodley ! * add GLmax comment for 2Q4 ("QM") ! * replace "Qs" definitions with SLC positron inflector (LI01) quadrupole ! definitions ! 24-AUG-2015, Y. Nosochkov ! * specify gap height and length of fast kickers and septa ! ------------------------------------------------------------------------------ ! 19-JUN-2015, Y. Nosochkov ! * restore definition of 1.97Q20 quadrupole ! ------------------------------------------------------------------------------ ! 16-APR-2015, M. Woodley ! * restore "LQL" parameter (used in SPRD.xsif) ! 20-MAR-2015, M. Woodley ! * remove 1.97Q10 and 1.97Q20 quadrupole definitions (replaced with 2Q10s) ! * set length of tungsten jaw collimators (15*X0; X0(W)= 4 mm; Ljaw = 6 cm) ! * add SEQ20BEG, SEQ20END, BEGCuSXR, ENDCuSXR MARKERs (for LCLS1 to SXR line) ! * add SEQ21BEG, SEQ21END, BEGBSYA, ENDBSYA MARKERs (for BSY to A-line) ! ------------------------------------------------------------------------------ ! 12-DEC-2014, M. Woodley ! * add PEPII "2Q10" quadrupole type ! * add area and SEQ BEG/END MARKers for safety dump lines ! 09-DEC-2014, Y. Nosochkov ! * specify a preliminary length of protection collimators in the spreader ! 19-NOV-2014, Y. Nosochkov ! * specify type of undulator quadrupole (per J. Amann) ! ------------------------------------------------------------------------------ ! 28-OCT-2014, M. Woodley ! * add SEQ17BEG, SEQ17END, BSY1BEG, BSY1END MARKERs (for LCLS1 BSY) ! ------------------------------------------------------------------------------ ! 15-OCT-2014, M. Woodley ! * add R56 compensation chicane parameters ! ------------------------------------------------------------------------------ ! ============================================================================== ! magnets ! ------------------------------------------------------------------------------ ! LCLS2 quadrupoles ! QK : 1.625Q27.3 ! QA : 1.26Q12 (NOTE: bore of captured BPM is 0.870") ! Qu : undulator quadrupole (0.433Q3.1) LQK := 0.7142 ; rQK := 1.625*IN2M/2 !GLmax= ? kG @ ? A LQA := 0.32 ; rQA := 0.016 !GLmax= 112 kG @ 120 A LQu := 0.084 ; rQu := 0.0055 !GLmax= 41.8 kG @ 6 A ! LCLS quadrupoles ! Qx : Everson-Tesla quadrupole (1.26Q3.5) ! Qc : SigmaPhi "tweaker" quadrupole (1.69Q3.4) ! QsB : "Bertsche" skew quadrupole LQx := 0.108 ; rQx := 0.016 !GLmax= 20.0 kG @ 12 A LQc := 0.108 ; rQc := 0.043/2 !GLmax= 2.1 kG @ 12 A LQsB := 0.16 ; rQsB := 0.06 !GLmax= 1.3 kG @ 12 A ! PEP-II quadrupoles ! QM : PEPII injection quadrupole (2Q4) ! QP : PEPII LER quadrupole (3.94Q17) ! QR : PEPII injection quadrupole (2Q10) ! QN : PEPII injection "50Q" quadrupole (1.97Q20) LQM := 0.1244 ; rQM := 0.0269 !GLmax= 6.75 kG @ 45 A; GLmax= 27 kG for 2Q4W LQP := 0.43 ; rQP := 0.05 !GLmax= 44.6 kG @ 178 A LQR := 0.263 ; rQR := 0.0257 !GLmax= 50 kG @ 160 A LQN := 0.542 ; rQN := 0.025 !GLmax= 78 kG @ ? A ! FFTB quadrupoles ! QF : FFTB "Russian" quad 0.91Q17.72 ! QD : FFTB dump quad (3.25Q20) LQF := 0.46092 ; rQF := 0.023/2 !GLmax= 386.8 kG @ 240 A LQD := 0.55 ; rQD := 0.08255/2 !GLmax= 74.7 kG @ 35 A ! SLC quadrupoles ! QE : linac QE4 (1.085Q4.31) ! Qs : LI01 positron inflector type ! QW : "wraparound" type (4.63Q8.0; i.e. SLTR QWF1015) LQE := 0.1068 ; rQE := 1.085*IN2M/2 !GLmax= 106 kG @ 220 A !LQs := 0.09181 ; rQs := 1.013*IN2M/2 !GLmax= 52 kG @ 207 A LQs := 0.197 ; rQs := 1.510*IN2M/2 !GLmax= 31 kG @ 90 A LQW := 0.248 ; rQW := 4.625*IN2M/2 !GLmax= 16.5 kG @ 50 A ! R56 compensation chicanes (0.788D11.50): ! GBCC = bend magnet full gap height (m) ! ZBCC = bend magnet Z-length (m) ! ZDCC = Z-space between magnets (m) GBCC := 0.032 ZBCC := 0.35 ZDCC := 0.2 ! FFTB sextupoles ! Sa : 2.13S3.00 ! Sb : 1.38S3.00 LSa := 0.1 ; rSa := 2.13*IN2M/2 !G'Lmax= 240 kG/m @ 8 A; Kmax=18 (4 GeV) LSb := 0.1 ; rSb := 1.38*IN2M/2 !G'Lmax= 870 kG/m @ 8 A; Kmax=65 (4 GeV) ! ============================================================================== ! kickers and septa ! ------------------------------------------------------------------------------ SETSPs := 1 !deflector switch for SXR SETSPh := -1 !deflector switch for HXR SETSPd := 0 !deflector switch for dump CUSON := 1 !deflector switch ON for Cu-linac to SXR CUSOFF := 0 !deflector switch OFF for Cu-linac to HXR ALON := 1 !deflector switch ON for Cu/SC-linac to A-line ALOFF := 0 !deflector switch OFF for Cu/SC-linac to HXR DAON := 1 !deflector switch ON for DASEL DAOFF := 0 !deflector switch OFF for DASEL ! ============================================================================== ! miscellaneous ! ------------------------------------------------------------------------------ SbandF := 2856.0 !S-band rf frequency (MHz) XbandF := 4*SbandF !X-band rf frequency (MHz) Ljaw := 0.06 !standard jaw collimator length Lcoll := 0.08 !standard collimator length LPCSP := 0.0508 !length of BCS protection collimator in spreader (2") GBKSP := 0.02 !fast kicker gap height - round pipe, square bore aperture LBKSP := 1.0 !fast kicker straight length (m) GBLSP := 0.0159 !0.625SD38.98 septum gap height (m) LBLSP := 1.0 !0.625SD38.98 septum straight length (m) GBSP := 0.0254 !1.0D38.37 gap height (m) LBSP := 1.0 !1.0D38.37 straight length (m) R56SPs := 0.0 !R56 of the SXR spreader R56SPh := 0.0 !R56 of the HXR spreader LQL := 0.28 !length of no-longer-used 1.97Q10 quadrupole LRFBub := 0.05 !length of undulator RF BPM ! wooden BSY door (separates LI30 from BSY) WOODDOOR : MARK ! Note: BRDAS2 is a merge DC-bend which is either turned ON to operate ! DASEL beam in A-line, or turned OFF to operate beam in A-line from ! BSY pulsed magnets ABRDAS2 := -0.01201157008 TBRDAS2 := 0.399998963372 !BRDAS2 roll angle (rad) ! ------------------------------------------------------------------------------ ! beamline area delimiters (see PRD LCLSII-2.1-PR-0134) ! ------------------------------------------------------------------------------ ! areas "owned" by SC linac BEGGUNB : MARK ; ENDGUNB : MARK BEGL0B : MARK ; ENDL0B : MARK BEGHTR : MARK ; ENDHTR : MARK BEGCOL0 : MARK ; ENDCOL0 : MARK BEGL1B : MARK ; ENDL1B : MARK BEGBC1B : MARK ; ENDBC1B : MARK BEGCOL1 : MARK ; ENDCOL1 : MARK BEGL2B : MARK ; ENDL2B : MARK BEGBC2B : MARK ; ENDBC2B : MARK BEGEMIT2 : MARK ; ENDEMIT2 : MARK BEGL3B : MARK ; ENDL3B : MARK BEGEXT : MARK ; ENDEXT : MARK BEGDOG : MARK ; ENDDOG : MARK BEGBYP : MARK ; ENDBYP : MARK BEGSPH : MARK ; ENDSPH : MARK BEGSLTH : MARK ; ENDSLTH : MARK BEGSPD1 : MARK ; ENDSPD1 : MARK BEGSPD2 : MARK ; ENDSPD2 : MARK BEGSPD3 : MARK ; ENDSPD3 : MARK BEGSLTD : MARK ; ENDSLTD : MARK BEGSPS : MARK ; ENDSPS : MARK BEGSLTS : MARK ; ENDSLTS : MARK BEGBSYS : MARK ; ENDBSYS : MARK BEGLTUS : MARK ; ENDLTUS : MARK BEGSXX : MARK ; ENDSXX : MARK BEGSXR : MARK ; ENDSXR : MARK BEGUES : MARK ; ENDUES : MARK BEGDMPS : MARK ; ENDDMPS : MARK BEGSFTS : MARK ; ENDSFTS : MARK BEGSXTES : MARK ; ENDSXTES : MARK BEGDIAG0 : MARK ; ENDDIAG0 : MARK ! areas "owned" by Cu linac BEGCLTH0 : MARK ; ENDCLTH0 : MARK BEGCLTH1 : MARK ; ENDCLTH1 : MARK BEGCLTH2 : MARK ; ENDCLTH2 : MARK BEGBSYH1 : MARK ; ENDBSYH1 : MARK BEGBSYH2 : MARK ; ENDBSYH2 : MARK BEGLTUH : MARK ; ENDLTUH : MARK BEGHXR : MARK ; ENDHXR : MARK BEGUEH : MARK ; ENDUEH : MARK BEGDMPH : MARK ; ENDDMPH : MARK BEGSFTH : MARK ; ENDSFTH : MARK BEGHXTES : MARK ; ENDHXTES : MARK BEGCLTS : MARK ; ENDCLTS : MARK BEGBSYA : MARK ; ENDBSYA : MARK ! ------------------------------------------------------------------------------ RETURN