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LDRD Proposal R&D of New eRHIC Injection System H. Hahn, Wu (Arlene Zhang, Jon Sandberg Development of new pulser & demonstration with ring magnet Present System for 120 BP with blue ~90 ns, yellow 110 ns single (1 of 4) AGS bunch transfer to 180 (of 360) buckets
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LDRD Proposal R&D of New eRHIC Injection System H. Hahn, Wu (Arlene Zhang, Jon Sandberg Development of new pulser & demonstration with ring magnet Present System for 120 BP with blue ~90 ns, yellow 110 ns single (1 of 4) AGS bunch transfer to 180 (of 360) buckets e-RHIC Injection System Requirements 180 bunches: Increasing the number of bunchesrequires ~50 ns rise time Bucket length in RHIC ~ 35.5 ns Bunch length ~15 ns (Au), 20 ns (p) Bunch pattern: 60 > ~ 200 ns 120 > ~ 95 ns 180 > ~ 51(p) -56 (Au) ns
Develop and demonstrate feasibility of 180 bunch pattern: ~ 50 ns RHIC injection system rise time with Present Injection kicker Present Injection kicker is transmission line magnet ~36 ns fill time when terminated with 40 Ω Requires NEW POWER SUPPLY< 15 ns rise time (1 to 99 %) ~ $250 k ∙involve industry in design and fabrication of SOLID STATE pulser 1kA & 45 kV (38 kV operation) Impedance matching to ~40 Ω Connect pulser in support building to ring with new dispersion free cables 2×75 Ω ~ $165 k
