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EPC Power Converters and the Linac4/PSB Beam Interlock System

EPC Power Converters and the Linac4/PSB Beam Interlock System. B. Mikulec , B. Puccio & J-L. Sanchez. LINAC 4. RF Ctrl. Pre Chop. Chop per. Disable ramping of PSB RF. Source RF Master BIC. Previous BIS Proposal. Choppers Master BIC. TRANSFER LINE.

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EPC Power Converters and the Linac4/PSB Beam Interlock System

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  1. EPC Power Convertersand the Linac4/PSB Beam Interlock System B. Mikulec, B. Puccio & J-L. Sanchez

  2. LINAC 4 RF Ctrl Pre Chop. Chop per Disable ramping of PSB RF Source RF Master BIC Previous BIS Proposal Choppers Master BIC TRANSFER LINE RF Ctrl PSB 9 13 BT line Kicker EJECTION Master BIC L4 & L4T BIC PSB OK (2) BIC PSB OK (1) BIC 12 7 7 Simplified layout (Version 1) 10 PS ring BIC ( not yet defined ) BCC

  3. LINAC 4 RF Ctrl Pre Chop. Chop per New draft BIS Proposal Disable ramping of PSB RF Source RF Master BIC Choppers BIC TRANSFER LINE RF Ctrl PSB 12 11 BT line Kicker L4 Tr.(2) Master BIC L4 Tr.(1) Master BIC 12 14 EJECTION Master BIC PSB Injection BIC 12 PSB Master BIC Simplified layout (Version 2) 11 10 PS ring BIC ( not yet defined ) BCC

  4. Previous vs. New version Version 1: 58 Channels & 3+3 Controllers (Master/Slave BICs) Version 2: 82 Channels & 5+2 Controllers (Master/Slave BICs) BCC

  5. EPC Power Converters for ‘Master BIC Source RF’ • 3 central chopper quadrupoles critical for correct chopper action; now 3 individual user permits BCC

  6. EPC Power Converters for ‘Master BIC Linac4 Transfer (1)’ • All main bendings of transfer line; dependence on destination now through BIC truth table BCC

  7. EPC Power Converters for ‘BIC PSB OK (1)’ • For PSB injection beam permit need to combine individual ring user permits of power converters for BI.SMV and for BI.BSW BCC

  8. EPC Power Converters for ‘Master BIC PSB OK (2)’ • Status information of MPS, BE.BSW and BE.SMH BCC

  9. EPC Power Converters for ‘Master BIC PSB Ejection’ • Destination dependence through BIC truth table BCC

  10. Conclusions • Modified BIS design will comply with EPC wish to avoid dealing with destinations at the power converter level. • If the limit on the current acquisition is relaxed to a level where equipment damage can occur, the beam interlock system can obviously no longer guarantee equipment safety. (concerns TL(1) BIC and PSB injection BIC) • A decision has then to be taken if the risk is considered acceptable for example in combination with survey via software interlocks (SIS). BCC

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