Experiment Scheduling

When the costs and Laboratory impacts of the experiment are fully understood, the director may schedule the experiment for beam time. When scheduling is granted the experiment achieves installation/checkout status. During this phase, detector design, construction, installation and checkout are completed. All equipment regardless of its origin must be built according to the appropriate local codes, including the Jefferson Lab EH&S Manual. Appendix  also provides guidance to acceptable standards. Each experimental hall has a safety warden who is responsible for ensuring compliance with building related safety rules and codes. The safety warden or the Physics Division EH&S Department should be consulted on all issues related to building life safety, flammable and chemical hazards, oxygen deficiency hazards, electrical safety, fire protection, mechanical transports, walking/working surfaces, and laser use.

Also during this phase, Physics Division is responsible for conducting EH&S reviews of those systems that have unusual hazards as identified in the SAD. Documentation of these reviews is the first part of the Operational Safety Procedures (OSP). The OSP process is described in detail in the Jefferson Lab EH&S Manual, and permits operation of subsystems for checkout purposes before full commissioning of the experiment.

When all aspects relating to the planned method of operation are understood, Physics Division will determine whether any of these activities (e.g. controlled accesses, calibration laser use) are sufficiently hazardous to merit strict adherence to Conduct of Operations requirements. These are requirements on activities such as shift routines, procedure use and training, logbook keeping, and shift turnover. It is the policy of Physics Division that all such hazardous activities be performed by the Operations Group. Experiments will find some aspects of Conduct of Operations useful during data taking. See Appendix  for further details.

EH&S Support. Services provided either directly by the Physics Division EH&S Group or by other laboratory support groups through the Physics Division Group include industrial safety consultation, industrial hygiene monitoring, radiation monitoring, environmental sampling and EH&S technician support. Experimenters should consult with the EH&S Department when proposing to use hazardous, flammable or toxic chemicals. The EH&S Department also provides training for users who anticipate the need to work in ODH areas, operate cranes or fork lifts, work with lead, lockout/tagout, etc.

Engineering. Engineering specialists within the Physics Division support departments are available for general technical consultation. Because Physics Division has only limited engineering resources, the collaboration must specify any direct support required for detectors, support stands, magnets, electronics or other needs. For large experiment installations, a Physics division project engineer may be assigned. In addition, the engineering support departments participate in EH&S reviews.

Mechanical Shop and Detector Construction Facilities. Jefferson Lab operates facilities to build experiment apparatus, often providing the tools and technicians to work with experimenters on such projects.

Operations Services. The Accelerator Operations Department provides beamline design, beamline operation and building management services to experiments. The Radiation control Group staff (RCG) are responsible for all radiation safety aspects of beam and experiment operation. This responsibilitie is often carried out through the use of specially trained Assigned Radiation Monitors (ARMs).

Installation. The Mechanical Support Department oversees the rigging, electricians and other trades who help install experiments. These services are typically provided using outside contractors on a T and M (Time and Materials) basis.

Magnetic Field Mapping. Experiments that need magnetic field maps of analysis magnets should request formally by the collaboration.

Survey and Alignment. Jefferson Lab Support Group provides all survey and alignment services, from civil construction to precision alignment of experiment apparatus. To ensure accuracy in installation, experimenters should consult the Alignment Group early in the design phase.

Beamline Control System. EPICS based control system that allows users to control and monitor all beam parameters. Device control privileges are granted an experiment by experiment basis and on a ``need to control" basis. These privileges are determined by the Physics and Accelerator Divisions. Further information on EPICS accounts and facilities are available from the accelerator division EPICS software group.