BLOC Responsibilities¶

This document specifies the responsibilities of the acting BLOC when they are on duty.

MICE Muon Beam on-call support: responsibilities and duties¶

The MICE Muon Beam on-call support (BLOC=’Beam Line On Call’) acts as the interface between the MICE Operation Manager (MOM), the MICE Hall Manager, and the MICE shift crew on the one hand, and the beamline sub-systems on the other, regarding all issues related to the MICE Muon Beam.

The MICE Muon Beam includes the following sub-systems:

• The target;
• The decay solenoid;
• The proton absorber;
• The conventional magnets (Q1—3, D1, D2, Q4—6, and Q7—9);
• The moving beamstop;
• The diffuser

The BLOC will also have some understanding of the ancillary services for the above.

Responsibilities and duties:¶

• The BLOC will be familiar with the operating instructions for the various sub-systems and will have been trained in the various procedures;
• Training sessions will be organised as appropriate by the Beam Line Co-ordinator (at present H. Nebrensky). It is a requirement that this training be carried out and that the new BLOC is familiar with the operation of each of the beam line components before his or her first BLOC duty;
• The BLOC rota, together with the list of trained BLOCs will be maintained by the MICE Beam Line Co-ordinator.

Preparing the beam line for data taking:¶

• Once the MOM has determined that the conditions are appropriate, the MOM will contact the BLOC and ask that the beam line be set up for data taking;
• The BLOC will carry out the various procedures that are described in the target, decay solenoid, beamstop, and conventional magnet instructions to prepare the beam line for data taking;
• The BLOC will solve problems as they arise with reference to the relevant sub-system expert as required;
• The BLOC will be at the experiment to carry out these duties.

During data taking:¶

• The BLOC is on-call at the experiment, on site at RAL, or close to the laboratory (within 30 minutes travel of MICE, as a guide);
• In response to requests from the MOM or the shift crew, the BLOC will solve problems with the beam-line sub-systems as they arise with reference to the relevant sub-system expert as required.

Making the beam-line safe after data taking:¶

• Once the MOM has determined that the beam line be shut down after data taking, the MOM will contact the BLOC and ask that the beam line be shut down;
• The BLOC will carry out the various procedures that are described in the target, decay solenoid, beamstop, and conventional magnet instructions to make the various beam line sub-systems safe;
• The BLOC will be at the experiment to carry out these duties.

When MICE is not running¶

• There will not be a BLOC routinely on duty when the MICE experiment is not running; however trained BLOCs are expected to attend ad hoc in order to help with the monthly exercise of the target system and with occasional maintenance activities.

• When there is no BLOC on duty, beamline support is available directly from the Beam Line Co-ordinator (at present H. Nebrensky) during normal working hours.

Communication:¶

• The BLOC can be contacted via the BLOC phone: +44 7825 713686
• If the BLOC cannot be reached, contact the Beam Line Co-ordinator (at present H. Nebrensky) via the BLOC2 phone: +44 7500 121845