ILC2016x 12/08/2016 LCWS2016 (Morioka, Japan)

Overview the previous “official” release of ILC lattice description files (MAD8 Extended Standard Input Format files) was designated ILC2015b https://bitbucket.org/whitegr/ilc-lattices the latest ILC release, designated ILC2016x, is ILC2015b plus the following changes: implementation of Change Request CR-011 … rearrangement of undulator positron source remove low-energy transport line between pre-acceleration and booster linac add short collimation/emittance diagnostic section after pre-acceleration move booster linac upstream add energy compressor after booster linac (before path length adjuster) 3 chicanes to generate R56 one 9-cavity cryomodule (moved from PLTR) remove energy compression sub-systems from PLTR pre-PLTR chicane one 9-cavity cryomodule (moved to new energy compressor) modify PLTR lattice around spin rotator solenoid prepare space for possible replacement of superconducting solenoid with room temperature solenoids at a later time reduce length of positron LET system by 0.319462 m to maintain e+/e- path length difference changes to Beam Delivery System collimation setup by Glen White and Lew Keller reconfigured spoiler/absorber locations addition of muon spoilers FF offset got 28.5453 mm bigger (old: 1.6652 m; new: 1.6938 m) 12/08/2016 LCWS2016 (Morioka, Japan)

12/08/2016 LCWS2016 (Morioka, Japan)

CR-11 implementation based on designs by T. Okugi 2015/10/07 12/08/2016 LCWS2016 (Morioka, Japan)

e+ Source changes for CR11 (1) PPA no changes through end of PPALIN (pre-acceleration) section exit matching section modified three 45° FODO cells added (new PPAEMIT section) Lcell = 8 m space for 3 sets (X and Y) of betatron collimators separated by 45° (βX,Y ≈ 15 m) space for 4 wire scanners separated by 45° for emittance measurement (βX,Y ≈ 10 m) PTRANL (removed) PBSTR entrance matching section modified remove one quadrupole booster linac moved upstream by 397.310894 m no changes to booster linac configuration or component complement PEC (new) three 4-dipole chicanes added for R56 generation (L ≈ 20 m per chicane) ΔXmax ≈ 1285 mm ηmax ≈ 1330 mm R56total ≈ 1416 mm ΔStotal ≈ 688 mm one “Type A” 9-cavity cryomodule (moved from pLTR) Vtotal = 131 MV (zero-crossing phase) 12/08/2016 LCWS2016 (Morioka, Japan)

e+ Source changes for CR11 (2) PPLA (same configuration as ILC2015b) entrance matching section modified three 4-dipole chicanes for path length adjustment (L ≈ 20 m per chicane) parameters for S = S0 (S can be adjusted ±230 mm) ΔXmax ≈ 744 mm ηmax ≈ 752 mm R56total ≈ 464 mm ΔStotal ≈ 230 mm exit matching section modified PTRANH FODO lattice lengthened by ~300 m Ncell = 38 (was 36) Lcell = 32 m (was 25.3 m) Δψcell = 90° (was 38°) PLTR remove energy compressor / path length adjuster chicane (at end of PTRANH, before PLTR) remove energy compressor RF one “Type A” 9-cavity cryomodule (moved to PEC) replace lattice around spin rotator solenoid with slightly modified Okugi-san design prepare space for possible replacement of superconducting solenoid with room temperature solenoids at a later time superconducting solenoid itself is unchanged from ILC2015b (L = 8.32 m, Bz = 3.162 T) 12/08/2016 LCWS2016 (Morioka, Japan)

ILC2016x ILC2015b PPA PCAP PLTR PBSTR PTRANH PEC/PLA PPAEMIT PPA PCAP PTRANL PBSTR PTRANH PLA PEC/PLA chicane 12/08/2016 LCWS2016 (Morioka, Japan)

ILC2016x ILC2015b possible wire scanner location PCAP PBSTR PPA PPAEMIT possible wire scanner location possible collimator location ILC2015b PCAP PTRANL PPA 12/08/2016 LCWS2016 (Morioka, Japan)

ILC2016x ILC2015b PBSTR PTRANH PEC chicane PEC RF PLA PBSTR PTRANH PLA 12/08/2016 LCWS2016 (Morioka, Japan)

ILC2016x ILC2015b PBSTR PTRANH PEC chicane PEC RF PLA PBSTR PTRANH PLA 12/08/2016 LCWS2016 (Morioka, Japan)

ILC2016x ILC2015b PTRANH PDRINJ PLTR PEC RF PTRANH PDRINJ PLTR PEC/PLA chicane 12/08/2016 LCWS2016 (Morioka, Japan)

ILC2016x ILC2015b PTRANH PDRINJ PLTR PEC RF PTRANH PDRINJ PLTR PEC/PLA chicane 12/08/2016 LCWS2016 (Morioka, Japan)

e+ LET changes for CR11 PLTL reduce length of “RTMATCH” beamline (just upstream of turnaround) by 0.159731 m rematch return line to turnaround PBC2 reduce length of “BC2_ML_2” beamline (matching between PBC2 and PML) by 0.159731 m rematch PBC2 to PML 12/08/2016 LCWS2016 (Morioka, Japan)

LTL to turnaround match DR extraction turnaround BC2 to Main Linac match Return Line Main Linac IP 12/08/2016 LCWS2016 (Morioka, Japan)

see Glen White’s presentation later this morning … BDS changes in ILC2016x eCOL/pCOL (low energy) reconfigured spoiler/absorber locations and added muon spoiler definitions as per recent simulation study for muon background supression eFF/pFF (low energy) eCOL/pCOL (high energy) eFF/pFF (high energy) see Glen White’s presentation later this morning … 12/08/2016 LCWS2016 (Morioka, Japan)

ILC2016x: ECOL/PCOL (ECM ≤ 600 GeV) ILC2016x: EFF/PFF (ECM ≤ 600 GeV) 12/08/2016 LCWS2016 (Morioka, Japan)

ILC2016x: ECOL/PCOL (ECM > 600 GeV) ILC2016x: EFF/PFF (ECM > 600 GeV) 12/08/2016 LCWS2016 (Morioka, Japan)

To-Do List (in no particular order) need to fix earth’s curvature following and vertical orbit/dispersion compensation broken since ILC2015a release … see Arun Saini’s Tuesday presentation BSY laserwire chicane offset large enough for laserwire photon detection? old (polarimeter) chicane offset was 20 mm … offset now is 8 mm document work for configuration of spoilers, absorbers & muon spoilers document muon fluxes with different configurations including muon wall if no muon wall -> shielding requirements for neutrons design and documentation of BCS in BDS; emergency extraction kicker requirements … further optimization of FFS lattice, especially for Ecm < 500 GeV; error tolerances tight for all lattices, mover tolerances very tight consider design of dispersion correction system for BDS design of FD anti-solenoid, inclusion into models of FD field-map & anti-DID, check simulated tuning; generate field and vibration tolerance specs complete design and decks for abort/tuneup lines to tuneup/abort dump and from undulator to main dump; make consistent with beam dump CR FFS matching: operational phase control for FFS & collimation system, optimized 6-parameter matching; define match tolerances 1 TeV extraction line design- currently beam loss rates too high convert ILC decks to AML format? UAP: debug AML parsers to all common deck formats define a consistent nomenclature for decks and apply develop and maintain a common start-end tracking environment merge repository into EDMS and document 12/08/2016 LCWS2016 (Morioka, Japan)

ILC2016x: Lattice Repository 12/08/2016 LCWS2016 (Morioka, Japan)

https://bitbucket.org/whitegr/ilc-lattices no account (user ID, password) required to download Until ILC2016x is “officially” accepted (i.e. incorporated into EDMS system), it should be downloaded from a specific branch of the repository (see next slide … ) 12/08/2016 LCWS2016 (Morioka, Japan)

https://bitbucket.org/whitegr/ilc-lattices/downloads?tab=branches download the “RC2016X” branch (complete set of ILC MAD input files) 12/08/2016 LCWS2016 (Morioka, Japan)