Transformer positions for BISMV and BSW

M. Hourican2 March 2015

BSW4 transformers (‘small’)12 power cablesWater manifold for 16 magnetsControl box

BISMV3 transformersWater manifold for 3 magnetsControl box

BISMV – Downstream (Beams 2 & 4)

3 transformers, 0.8 m3, and 1 Tonnes each3 striplines equipped with Pearson / DCCTEPC prefer not to stack transformers in case of a failure and the subsequent exchange procedure (…ALARA)Crane available for installation

Upstream magnetRing 1

Main magnet feedthrough here

Proposed transformer position for upstream magnet

BTSMV10 in close proximity to the BISMV

RememberThe pumping group shall be transferred to the main BT10 vacuum tank for 2 GeV operation

BI equipment transferred to here

Primary Pumping group new location here

BSW - Objectives

Place transformers in a place where they will not cause obstructionOptimise the positions for the lengths of the strip linesEnsure transformers have sufficient clearance for installation of DCCT and for maintenance / failure interventionRemove obsolete cabling if possible-Transformers can be shimmed off the floor level to allow useful cables to remainThe area under the false floor is approx. 0.67m deep and can house the transformersProtection covers can be fitted to prevent access by unauthorised personnelLast but not least, if one transformer fails, it can be easily and rapidly replaced (Stacking does not permit this)

Remember – No crane available !

Viewed from inside booster ring

Viewed from outside booster ring

4 transformers to placeSize approx. 600x600x60012 power cables for BSW2,3 &4 go to surface buildingWater distribution manifolds, flowmeters, gauges etcControl (SMB) interface box

Each transformer shall be equipped with 2x DCCT’s (Dimensions approx. 470x470x 30mm)Protective covers to be easily accessed

DCCT

ConclusionsBISMV

No interference with pipingRaised off floor by 100mmCrane access okMinimum distance from magnet feedthroughsSpace for DCCT guaranteed

BSWNo interference with pipingRaised off floor by 100mmCrane access no ok – Forklift can be used to do the installationSpace available for DCCT’sNo restriction on access around the injection regionLengths of striplines can be optimised

Booster Transfer Lines