Tuning time estimates

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• ISAC (Isotope Separator and ACcelerator)

Tuning time estimates

To help Users better plan their experiments, a list of typical time estimates for established tuning procedures is shown below. These estimates should be used by the User to budget the necessary overhead for experimental start-up, energy changes, species changes and other procedures.

In addition, interruptions to beam delivery may occur. Some of these interruptions, such as those due to regular maintenance or proton therapy, are known at the time the Beam Schedule is prepared and scheduled accordingly. Others, such as work in the ISAC Target Hall, may not be known at the time of scheduling but are known on a time scale of weeks in advance. The Beam Delivery group will try to meet with the experimental spokesperson and/or designates prior to the beginning of an experiment to confirm what is required from a beam delivery standpoint and to assist with the preparation of a detailed running plan, taking into account these known, but not scheduled, interruptions. At ISAC, this planning may help a User decide the optimum time for an energy change or a species switch. Totally unplanned interruptions, such as those due to mechanical failures, are unavoidable. Because TRIUMF is a user facility, catering to many external experimenters, it is generally not possible to adjust the beam schedule in response to such interruptions.

Tuning Time Estimates

Procedure	Time
General tuning: Proton BL2A Stable beam in Pre-Accelerator section RIB in Pre-Accelerator section	1 hour 12 hours 4 hours
ISAC-I LINAC tuning to full energy (OLIS to User)	12 hours
ISAC-I energy change: Change to pilot beam Switch energy and optimize Change to RIB and optimize	0.5 hours 1 hour/DTL tank 1 hour
ISAC-II LINAC tuning (from scratch)	8 hours
ISAC-II energy change: Change to pilot beam Switch energy and optimize Change to RIB and optimize	0.5 hours 2 hours/cryomodule 1 hours
Checking the tune: Cyclotron (minimize spills) Proton BL2A ISAC Pre-Accelerator section ISAC Accelerator section	4 hours 1 hour 2 hours 2 hours
Maintenance Day (typical): Cyclotron off Cyclotron tuning TRILIS tuning (if applicable) ISAC Tuning	12 hours 2 hours 2 hours 2 hours
Proton Therapy (typical)	4 hours