LBNF / RR Injection Kicker Angled Adapter Measurement Update Dennis - PowerPoint PPT Presentation

LBNF / RR Injection Kicker Angled Adapter Measurement Update Dennis Barak, Chris Jensen, George Krafczyk MI/RR Department Meeting 16 August 2017

Outline • Purpose/Background • Test setup overview • Recap Oct2016 results and what remained to be measured • Interesting findings • Measurement results 2 8/16/17 D. Barak | LBNF/RR Injection Kicker Load Adapter

Background • Proposed LBNF beamline rolled dipole interferes with existing RR Injection kicker magnet input cables and load resistors • Fabricated two prototype LBNF angled adapters (LBNFAA) for testing • Testing is needed to understand how the LBNFAA affects the kicker HV input connector magnet’s response • Initial testing completed in Oct 2016 • Each RR Inj Kicker feeds two RKAA magnets in parallel • R:KPS1B feeds – KM103D (RKAA002) – KM103E (RKAA007) 3 8/16/17 D. Barak | LBNF/RR Injection Kicker Load Adapter

Background (cont’d) Fluorinert feed- • Component capacitances: thru – Regular Fluorinert feed-thru (with disc): 27.4 pF (+19.8 pF) – Modified Fluorinert feed-thru (no disc): 7.6 pF (+0 pF) – LBNE load adapter: 40.0 pF (+32.4 pF) – Whole magnet: 715-735 pF (RKA/RKAA) HV input connector Magnet load 4 8/16/17 D. Barak | LBNF/RR Injection Kicker Load Adapter

Oct 2016 Results – Test Setup 5 8/16/17 D. Barak | LBNF/RR Injection Kicker Load Adapter

Oct 2016 Results (cont’d) KM103E - Normalized Values Oct2016 - Vin E 1.2 Oct2016 - Vout E Oct2016 - KM103E, L315 1 0.8 0.6 Int(B) 0.4 0.2 0 0 0.5 1 1.5 2 Time (us) 6 8/16/17 D. Barak | LBNF/RR Injection Kicker Load Adapter

Oct 2016 Results (cont’d) Normalized Int(B) - Rise Time 1.08 57 ns Oct2016 - KM103D, L316, LBNFAA 1.075 Oct2016 - KM103E, L315 1.07 1.065 Injection Kicker Spec: 1.06 Rise Time: 57 ns max (3 buckets) • 1.055 • Flattop ripple: +/- 3% 1.05 1.045 1.04 1.035 1.03 1.025 1.02 1.015 1.01 1.005 1 0.995 0.99 0.985 0.98 0 0.095 0.19 0.285 0.38 0.475 0.57 0.665 0.76 Time (us) 7 8/16/17 D. Barak | LBNF/RR Injection Kicker Load Adapter

Oct 2016 Results (cont’d) • Initial testing showed: – Large increase (+4.5%) in peak kicker Int(B) overshoot – Kicker Int(B) rise time increased to >90 ns (spec is 57 ns) – Adapter removed from kicker magnet in tunnel at request of MI/RR department • Proposed additional testing: HV input connector – Quantify measurement certainty – LBNF angled adapter with a modified (disc-less) Fluorinert feedthrough – LBNF angled adapter on magnet input connection – Perform these tests on spare kicker magnet in A0 kicker test cage 8 8/16/17 D. Barak | LBNF/RR Injection Kicker Load Adapter

Normalized B Field Flattop 1.1 Oct2016 - KM103D with adapter 1.095 1.09 2017M1 - KM103D no adapter 1.085 2017M2 - KM103D no adapter Since Last Update 1.08 Normalized B Field Flattop 1.075 2017M4 - KM103D no adapter 1.07 1.1 2017M5 - KM103D no adapter 1.065 Oct2016 - KM103D, L316, LBNFAA 1.095 • 1.06 Testing with spare RKA magnet in A0 test 1.09 2017M1 - KM103D, L316 1.055 1.085 kicker system not successful 1.05 2017M2 - KM103D, L316 1.08 1.045 – 1.075 1.04 2017M4 - KM103D, L316 Unable to replicate Oct 2016 results 1.07 1.035 2017M5 - KM103D, L316 – 1.065 RKA vs. RKAA 1.03 1.06 1.025 • RKAA is revised RKA 1.02 1.055 1.015 1.05 • Testing resumed in tunnel at beginning of 1.01 Normalized B Field Flattop 1.045 1.005 1.04 Shutdown 2017 1.07 1 RKA007, L318 1.035 1.065 0.995 • 1.03 Noteworthy findings: 2017M1 - KM103D, L316 1.06 0.99 Normalized B Field Flattop 1.025 2017M6 - KM103D, L318 0.985 1.055 – 1.02 Failed kicker load on KM103D 1.07 0.98 2017M7 - KM103D, L318 1.05 1.015 RKA007, L318 0.975 • 1.065 Measurement-to-measurement Int(B) 2017M8 - KM103E, L309 1.01 1.045 0.97 2017M1 - KM103D, L316 1.005 overshoot variation 0.965 1.06 1.04 1 0.96 2017M6 - KM103D, L318 • 0 0.095 0.19 0.285 0.38 0.475 0.57 0.665 0.76 0.855 0.95 1.045 1.14 1.235 1.33 1.425 1.52 1.615 May have contributed to large overshoot seen 1.035 1.055 0.995 Time (us) 2017M7 - KM103D, L318 1.03 in Oct 2016 results 0.99 1.05 0.985 1.025 2017M8 - KM103E, L309 • Replaced with spare load 1.045 0.98 1.02 • 0.975 Also replaced kicker load on KM103E to 1.04 1.015 0.97 match new load on KM103D 1.01 1.035 0.965 – 1.005 KM103D is an early RKAA magnet 0.96 1.03 0 0.095 0.19 0.285 0.38 0.475 0.57 0.665 0.76 0.855 0.95 1.045 1.14 1.235 1.33 1.425 1.52 1.615 1 Time (us) • 1.025 Pulse response similar to RKA not RKAA 0.995 • 1.02 Contributes to large overshoot seen in Oct 0.99 2016 results 1.015 0.985 0.98 1.01 0.975 1.005 9 8/16/17 D. Barak | LBNF/RR Injection Kicker Load Adapter 0.97 0 0.095 0.19 0.285 0.38 0.475 0.57 0.665 0.76 0.855 0.95 1.045 1.14 1.235 1.33 1.425 1.52 1.615 Time (us) 1 0.995 0.99 0.985 0.98 0.975 0.97 0 0.095 0.19 0.285 0.38 0.475 0.57 0.665 0.76 0.855 0.95 1.045 1.14 1.235 1.33 1.425 1.52 1.615 Time (us)

Magnet Pulse Response Test Setup / 318 / 309 10 8/16/17 D. Barak | LBNF/RR Injection Kicker Load Adapter

Magnet Pulse Response Test Setup (cont’d) 11 8/16/17 D. Barak | LBNF/RR Injection Kicker Load Adapter

Results – Effect of LBNFAA / LBNFAA + mod FLFT Normalized Int(B) - Flattop Int(B) – Normalized at “Mean” Flattop Value 1.04 1.37% peak 2017M1 - KM103E, L315 2.54% peak 2017M2 - KM103E, L315, LBNFAA 1.035 1.90% peak 2017M4 - KM103E, L315, LBNFAA, mod FLFT 1.03 1.025 1.02 1.015 1.01 1.005 1 0.995 0.99 0.985 0.98 0 0.095 0.19 0.285 0.38 0.475 0.57 0.665 0.76 0.855 0.95 1.045 1.14 1.235 1.33 1.425 1.52 1.615 Time (us) 12 8/16/17 D. Barak | LBNF/RR Injection Kicker Load Adapter

Results – Effect of LBNFAA / LBNFAA + mod FLFT Normalized Int(B) - Flattop Int(B) – Normalized at Median Flattop Value 1.04 +/- 0.97% 2017M1 - KM103E, L315 1.035 +/- 1.5% 2017M2 - KM103E, L315, LBNFAA +/- 1.25% 1.03 2017M4 - KM103E, L315, LBNFAA, mod FLFT 1.025 1.02 1.015 1.01 1.005 1 0.995 0.99 0.985 0.98 0.975 0.97 Injection Kicker Spec: Rise Time: 57 ns max (3 buckets) • 0.965 • Flattop ripple: +/- 3% 0.96 0 0.095 0.19 0.285 0.38 0.475 0.57 0.665 0.76 0.855 0.95 1.045 1.14 1.235 1.33 1.425 1.52 1.615 Time (us) 13 8/16/17 D. Barak | LBNF/RR Injection Kicker Load Adapter

Results – Effect of LBNFAA / LBNFAA + mod FLFT Normalized Int(B) - Rise Time Int(B) – Normalized at Median Flattop Value 1.04 57 ns +/- 0.97% 2017M1 - KM103E, L315 1.035 +/- 1.5% 2017M2 - KM103E, L315, LBNFAA 1.03 +/- 1.25% 2017M4 - KM103E, L315, LBNFAA, mod FLFT 1.025 1.02 1.015 1.01 1.005 1 0.995 0.99 0.985 0.98 0.975 0.97 Injection Kicker Spec: Rise Time: 57 ns max (3 buckets) • 0.965 • Flattop ripple: +/- 3% 0.96 0 0.095 0.19 0.285 0.38 0.475 0.57 0.665 0.76 Time (us) 14 8/16/17 D. Barak | LBNF/RR Injection Kicker Load Adapter

Results – Effect of LBNFAA + modified FLFT after changing kicker load Int(B) – Normalized at “Mean” Flattop Value Normalized Int(B) - Flattop 1.04 1.67% peak 2017M7 - KM103E, L309, LBNFAA, mod FLFT 1.18% peak 1.035 2017M8 - KM103E, L309 1.03 1.025 1.02 1.015 1.01 1.005 1 0.995 0.99 0.985 0.98 0 0.095 0.19 0.285 0.38 0.475 0.57 0.665 0.76 0.855 0.95 1.045 1.14 1.235 1.33 1.425 1.52 1.615 Time (us) 15 8/16/17 D. Barak | LBNF/RR Injection Kicker Load Adapter

Results – Effect of LBNFAA + modified FLFT after changing kicker load Int(B) – Normalized at Median Flattop Value Normalized Int(B) - Flattop 1.04 +/- 1.1% 2017M7 - KM103E, L309, LBNFAA, mod FLFT 1.035 +/- 0.85% 2017M8 - KM103E, L309 1.03 1.025 1.02 1.015 1.01 1.005 1 0.995 0.99 0.985 0.98 0.975 0.97 Injection Kicker Spec: • Rise Time: 57 ns max (3 buckets) 0.965 Flattop ripple: +/- 3% • 0.96 0 0.095 0.19 0.285 0.38 0.475 0.57 0.665 0.76 0.855 0.95 1.045 1.14 1.235 1.33 1.425 1.52 1.615 Time (us) 16 8/16/17 D. Barak | LBNF/RR Injection Kicker Load Adapter

Results – Effect of LBNFAA + modified FLFT after changing kicker load Int(B) – Normalized at Median Flattop Value Normalized Int(B) - Rise Time 1.04 57 ns +/- 1.1% 2017M7 - KM103E, L309, LBNFAA, mod FLFT 1.035 +/- 0.85% 2017M8 - KM103E, L309 1.03 1.025 1.02 1.015 1.01 1.005 1 0.995 0.99 0.985 0.98 0.975 0.97 Injection Kicker Spec: • Rise Time: 57 ns max (3 buckets) 0.965 Flattop ripple: +/- 3% • 0.96 0 0.095 0.19 0.285 0.38 0.475 0.57 0.665 0.76 Time (us) 17 8/16/17 D. Barak | LBNF/RR Injection Kicker Load Adapter

Results – Effect of adding LBNFAA on magnet input Normalized Int(B) - Flattop Int(B) – Normalized at Median Flattop Value 1.04 2017M8A - KM103E, L309 1.035 2017M9 - KM103E, L309, LBNFAA (input) 1.03 1.025 1.02 1.015 1.01 1.005 1 0.995 0.99 0.985 0.98 0.975 0.97 0.965 0.96 0 0.095 0.19 0.285 0.38 0.475 0.57 0.665 0.76 0.855 0.95 1.045 1.14 1.235 1.33 1.425 1.52 1.615 Time (us) 18 8/16/17 D. Barak | LBNF/RR Injection Kicker Load Adapter