Backwards Compatibility L 4 L 2 W Weterings

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Backwards Compatibility L 4 – L 2 W. Weterings LBCC - 14

Backwards Compatibility L 4 – L 2 W. Weterings LBCC - 14

L 4 PSB injection modification as currently planned • Removal L 2 equipment (and

L 4 PSB injection modification as currently planned • Removal L 2 equipment (and modify). • Removal obsolete cabling. • Installation L 4 equipment. • Installation L 4 cabling. • Minimum intervention time -> 3 Months.

Keeping Linac 2 as a backup by de-commissioning • De-commission L 2 equipment. •

Keeping Linac 2 as a backup by de-commissioning • De-commission L 2 equipment. • (radioactive) Storage of L 2 equipment. • If possible leave L 2 cabling in place. • Removal obsolete cabling. • Installation L 4 equipment. • Installation L 4 cabling. • Additional intervention time -> 2 Months. • L 4 to L 2 Conversion time -> 5 Months.

Keeping Linac 2 as a backup & leave L 2 equipment in place (BA

Keeping Linac 2 as a backup & leave L 2 equipment in place (BA 361) • Additional installation space for L 4 equipment. • De-commission L 2 equipment in tunnel. • If possible leave L 2 cabling in place. • Removal obsolete cabling. • Installation L 4 equipment. • Installation L 4 cabling. • Additional intervention time -> 1 Months. • L 4 to L 2 Conversion time -> 4 Months.

General Issues • Space management, Integration (BA 361). • Campaign to remove already obsolete

General Issues • Space management, Integration (BA 361). • Campaign to remove already obsolete cabling, equipment in coming shutdown. • Additional budget required for vacuum chambers (current plan is to modify existing pipes for L 4). • Investigate if KSW position for L 4 is compatible with L 2 operation.