Machine Setup Clearly we would like to work with the simplest possible machine

Initial Machine Setup

Clearly we would like to work with the simplest possible machine. To this end we can envisage powering the minimum of powering circuits and using the simplest machine configuration.

Settings

De-Gauss cycle
Commissioning tunes
Crossing angles off. Separation bumps off.

Magnet Circuits and associated power converters

Clearly the main lattice circuits (bends, quads) must be powered at their nominal values. Among the correction circuits the orbit correctors, trim quads, sextupole spool pieces, and skew quadrupoles should suffice.

Inner triplet multipole compensation - not needed
Spectrometer magnet compensators - de-commissioned.
Spectrometer magnets OFF
Experimental solenoids OFF
Skew sextupoles, octupoles and decapole spool pieces off.

Reference Magnet System offline

Beam Instrumentation

Following systems need to be fully available for commissioning with beam at the first available opportunity.

Beam Current Monitors
Beam Loss Monitors
Beam Position Monitors
Screens - injection, matching screens

Machine Protection [inc. Dumps and Absorbers]

TDI Out
Collimators Out
TCDQ OUT
Beam dump To be commissioned in stages with high priority. Operation in inject and dump mode foreseen in first instance.
Beam Interlock system configured to a minimum. Must match our minimal machine configuration.
Software Interlocks
Radiation Monitors
Transfer line collimators out.

Radio Frequency

RF 400 MHz OFF for first turn, available for capture
Low level synchronisation tested and available
Transverse dampers/feedback OFF
Longitudinal Feedback OFF

Injection system

Need:

Septa
Injection Kickers

Vacuum

All valves out
Monitoring, logging, display, control

	System	State	Action
Equipment	Injection Kickers and Septa	On-axis injection optimised	Operational
	RMS	Off
	Power Converters	All circuits available, cycling to predefined energy possible	Check all tolerances, monitoring
	RF	Capture
	RF - TFB		Not needed
	RF - LFB		Not needed

Machine protection	TCLI		Not needed at this stage
	TCDQ		Out
	TDI		out
	Collimators		out
	Beam Dump		off
	Beam Interlock Controller		operational - no beam related interlocks

Controls, in particular



Instrumentation	Beam Loss Monitors		ready
	Beam Current Transformers		ready
	Beam Position Monitors		ready
	Wire Scanners		Low priority
	Synchrotron Light Monitor		Low priority
	Screens		Not with circulating beam - check interlocks
	Tune measurement
	Chromaticity measurement
	Abort gap monitor		Not needed
	Radiation monitors		ready
	Residual gas monitors		Low priority

Technical Infrastructure	Beam Vacuum Cooling and Ventilation Cryogenics Plant Cryostat Instrumentation Electrical Network Insulation Vacuum Powering Interlock QRL Instrumentation QRL Vacuum Quench Protection Radiation Monitors Soft Interlocks		Taken as given. Commissioning particulars which bear on beam.