|
Finished phase A1 - A4 successfully.
Particularly important procedures
from the previous phases:
-
Mechanical aperture of the machine
known in number of sigma
-
fine timing adjustments of dump
system with 2 pilots beam (phase A.3.9.2.3)
-
TDI at roughly 10 σ
(Phase A.3.4.1.1) to prevent D1 from quench (no beam based
alignment, coarse setting)
-
orbit feedback working
in injection region, dump region and collimation areas
-
transverse damper working to
avoid injection oscillation (check done in phase A.3)
-
abort gap watchdog
commissioned
Other entry conditions:
-
complete hardware commissioning of
LHC BIS finished successfully, including all interfaces
-
Hardware commissioning
tests of vacuum, QPS, PIC, WIC passed successfully (see procedures defined within the MPSCWG)
-
critical settings ready in the
database and functionality tested
-
transfer lines TI 2 and TI 8
commissioned with intermediate (2 1012 p+=
1/4 of the nominal injection) beam intensities
-
Injection BIS completely hardware
commissioned and commissioned with beam up to TI 8 downstream TED
-
Injection BIS in injection region
commissioned without beam
-
No unmaskable interlocks
disconnected.
-
Orbit feedback working
Beam requirements
- Beam 1 and Beam 2 separately, easy change from one to the other.
-
single pilot or
intermediate bunch, 43 bunches (filling
scheme [5]) and 156 bunches (filling
scheme [6])
-
Nominal and reproducible beam emittance
of the circulating beam (value agreed for ramping) for previous
intensity
- Reproducible emittance from injector chain
|