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

2. Overview
the previous “official” release of ILC lattice description files (MAD8 Extended Standard Input Format files) was designated ILC2015b
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 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 mm bigger (old: m; new: m)
12/08/2016
LCWS2016 (Morioka, Japan)

3. 12/08/2016
LCWS2016 (Morioka, Japan)

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

5. 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 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)

6. 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 = T)
12/08/2016
LCWS2016 (Morioka, Japan)

7. 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)

8. 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)

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

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

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

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

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

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

15. 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)

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

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

18. 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)

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

20. 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)

21. 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)