Magnetic shielding meeting: 2012-08-08: 15:00 BST

Conference Room 4, R1

Present: PS, HW, LF, JT, TH, AG, KL, PH

	1.	Actions:
	⁃	MC: Update geometry and add quads;
	⁃	Transferred to PS.
	⁃	MC: Make prioritised list of items to be added to the magnetic model;
	⁃	Stands.
	⁃	AN,KL: How to add effort (perhaps B.Sheppard);
	⁃	KL had spoken to J. Clarke at DL.  JC had identified a person who might be available to support the MICE modelling work from September 2012.  JC will liaise and MC and RP to arrange a date to visit the MICE Hall in August to look at the issues.  Keep action to maintain pressure on finding additional effort.
	⁃	MC: Send transverse forces to mailing list;
	⁃	Stands.
	⁃	RP: Consider moving Twiki to MICE twiki;
	⁃	Done.
	⁃	MC: Draft person specification for "new team member";
	⁃	Stands.
	⁃	JT: Recheck assumptions that underlie the local magnetic shielding quote;
	⁃	Superseded by the next action.
	⁃	JT/MC: evaluate cost and complexity of shielding compressors at south wall
	⁃	Stands.  Assign to JT.
	⁃	JT/IM: Evaluate cost and complexity of shielding compressors at west wall
	⁃	JT has sent information to IS, so keep under IM's name.
	⁃	MC: evaluate effect of racks on field in RF area
	⁃	Stands.
	⁃	RP/AG: evaluate the installation of the RF amplifier
	⁃	Stands.
	⁃	TH, JT, IM, MC, AG, RP: Write paper for presentation to the TB for positioning of the racks behind north wall;
	⁃	RP sent skeleton of report this week with sections and lead authors.  Consultation being made with relevant people underway.  RP will collate.
	⁃	Agreed:
	⁃	Finalise the report by 25Aug12; 
	⁃	Review at our meeting on 29Aug12;
	⁃	Send AN for TB on 31Aug12.
	⁃	KL: Offer that LF should present list to MICO;
	⁃	Done.
	⁃	IM: Check content and limit on operation of the substation;
	⁃	Stands.

	2.	Status of review of items in Hall and contacts with system owners:		LF/MOM
	⁃	See list circulated (will be posted on the WWW);
	⁃	Excellent start; many ideas for improvement to the list;
	⁃	LF and MOM (PH at the moment) will pick of a first tranche of items to chase;

	3.	Status of magnetic model of MICE Hall								PS
	⁃	See slides circulated.
	⁃	Basic model of Hall has been created.  Ideas for improvement discussed.

	4.	Discussion of options:											All
	⁃	Racks: 
	⁃	Behind north magnetic shield wall;
	⁃	No new information this etc.
	⁃	On the mezzanine level to the north east;
	⁃	Back-up scenario at the moment;

	⁃	Compressors:
	⁃	Along west wall;
	⁃	JT, LF, AG met to discuss compressors along west wall.  Comparison of ideas made.  John Webb now looking at layout.  Need to discuss changing position of the stairs.  Need to look at routing of the high-pressure hoses.  Various options being considered.  
	⁃	Also consideration of the services.
	⁃	Present scheme, i.e. inside south magnetic shield wall;
	⁃	Not considered a viable option at the moment.

	⁃	Local shielding of magnetic field (return yokes):				HW
	⁃	Local shielding of solenoids and FC
	⁃	See slides;
	⁃	Discussion of issues related to the design.

	⁃	ISIS plant room:
	⁃	The notion that we might be asking for space in the ISIS plan room once we have evaluated the alternatives at a local, STFC, management meeting.

	⁃	Compressors;
	⁃	Racks;
	⁃	Both;
	⁃	Postpone until other options have been worked through.

	⁃	North-east corner:
	⁃	Conclude:
	⁃	North-east option is dis-favoured.

	⁃	Igloo:
	⁃	Closure of ends of shield wall
	⁃	Still on hold.
	
	5.	Exposure of equipment to magnetic field							CMacW,RP
	⁃	No report this week.

	6.	List of specific items to check									PS
	⁃	LH2 delivery systems 
	⁃	Q9 power supply
	⁃	HV rack
	⁃	Control rack for compressors, vacuum etc.
	⁃	Vacuum pumps
	⁃	Substation
	⁃	Equipment on the roof

	6.	AoB

Summary of actions:
	⁃	PS: Update geometry and add quads;
	⁃	MC: Make prioritised list of items to be added to the magnetic model;
	⁃	AN,KL: How to add effort (perhaps B.Sheppard);
	⁃	MC: Send transverse forces to mailing list;
	⁃	MC: Draft person specification for "new team member";
	⁃	JT: evaluate cost and complexity of shielding compressors at south wall
	⁃	IM: Evaluate cost and complexity of shielding compressors at west wall
	⁃	MC: evaluate effect of racks on field in RF area
	⁃	RP/AG: evaluate the installation of the RF amplifier
	⁃	TH, JT, IM, MC, AG, RP: Write paper for presentation to the TB for positioning of the racks behind north wall;
	⁃	Agreed:
	⁃	Finalise the report by 25Aug12; 
	⁃	Review at our meeting on 29Aug12;
	⁃	Send AN for TB on 31Aug12.
	⁃	IM: Check content and limit on operation of the substation;