Magnetic shielding meeting: 2012-09-05: 15:00 BST

Conference Room 1, R1 (phone conference details circulated)

Present: PS, JT, RP, KL, PH, HW, CMacW, TH, VF, JW, CW, IM, JC, AG

	1.	Actions:
	⁃	PS: Update geometry and add quads;
	⁃	Quads not yet attacked.  Progress noted below.  Stands.
	⁃	MC: Make prioritised list of items to be added to the magnetic model;
	⁃	Superseded.
	⁃	AN,KL: How to add effort (perhaps B.Sheppard);
	⁃	Underway; Jim Clarke et al will visit Roy Preece on the 10th September;
	⁃	PS, MC: Send transverse forces to mailing list;
	⁃	Stands.  MC has made progress on calculation, results are expected soon;
	⁃	JT: evaluate cost and complexity of shielding compressors at south wall
	⁃	Stands.
	⁃	IM: Evaluate cost and complexity of shielding compressors at west wall
	⁃	Discussed under agenda item below;
	⁃	MC: evaluate effect of racks on field in RF area;
	⁃	In hand;
	⁃	RP/AG: evaluate the installation of the RF amplifier
	⁃	Done; see paper;
	⁃	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 05Sep12;
	⁃	Review at our meeting on 05Sep12;
	⁃	Send AN for TB on 07Aug12.
	⁃	Discussed on agenda below;
	⁃	IM: Check content and limit on operation of the substation;
	⁃	Action stands; need to make our own assessment.  Most likely need to study field;
	⁃	PS, MC: Consult C. Rogers on version management scheme;
	⁃	PS spoke with CR; have not yet set it up, but plan to use launchpad using Bazarre.  Action stands.

	2.	Status of review of items in Hall and contacts with system owners:		LF/MOM
	⁃	Email from LF:
	⁃	I have sent it to all of the system owners that I have contact details for, more specifically those that are on the outlook directory.

	3.	Status of magnetic model of MICE Hall								PS
	⁃	See slides;
	⁃	Problems with model transmitted to Vector Fields.  They reported some fixes to make performance better.  WIth these modifications PS has made additional studies with the magnetic model;
	⁃	Plan for next steps presented.

	4.	Discussion of options:											All
	⁃	Racks: 
	⁃	Behind north magnetic shield wall;
	⁃	RP: took us through the paper which was circulated.
	⁃	Comments requested from all by the end of the UK working day tomorrow (Thursday 06Sep12).
	⁃	On the mezzanine level to the north east;
	⁃	Back-up scenario at the moment;

	⁃	Compressors:
	⁃	Along west wall;
	⁃	Confirmation of fields from modellers would be valuable to be added to the west-wall paper;
	⁃	Siting of water plant needs to be resolved;
	⁃	Input from JT on service routes for high-pressure hoses;
	⁃	Present information is 20.1m max length for cryomech high-pressure hoses;
	⁃	Again, comments are solicited by end of the UK working day tomorrow;
	⁃	Present scheme, i.e. inside south magnetic shield wall;
	⁃	Not considered a viable option at the moment.

	⁃	ISIS plant room:
	⁃	KL plans to take reports to D. Findlay to ask whether we can study the plant room option.

	⁃	Partial return yokes:										HW
	⁃	See slides;

	⁃	Igloo:
	⁃	Closure of ends of shield wall.
	⁃	On hold for the moment.
	
	5.	Exposure of equipment to magnetic field							CMacW, RP
	⁃	No report this week;
	⁃	JC reminds us of ITER contacts.  Idea was discussed once more.  Need to work out a plan which might involve ITER;

	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
	⁃	IM: asks what information is available from tests at Wang NMR.  
	⁃	Action: RP: check with SS team what the experience is;

Summary of actions:
	⁃	PS: Update geometry and add quads;
	⁃	AN,KL: How to add effort (perhaps B.Sheppard);
	⁃	PS, MC: Send transverse forces to mailing list;
	⁃	JT: evaluate cost and complexity of shielding compressors at south wall
	⁃	MC: evaluate effect of racks on field in RF area;
	⁃	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 05Sep12;
	⁃	Review at our meeting on 05Sep12;
	⁃	Send AN for TB on 07Aug12.
	⁃	IM: Check content and limit on operation of the substation;
	⁃	PS, MC: Consult C. Rogers on version management scheme;
	⁃	RP: check with SS team what the experience is;