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A brief update on EEX at ANL

A brief update on EEX at ANL. Latest EEX simulations (Planned) Experiment to characterize the input beam Development of BPM receiver electronics. EEX at the AWA. AWA photoinjector: Q=100pC; K= 12 MeV; Laser: s x = s y =2.5 mm; s z =1.15 ps;. EEX beamline: Q =15 deg; h x = 25 cm; k=4.

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A brief update on EEX at ANL

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  1. A brief update on EEX at ANL Latest EEX simulations (Planned) Experiment to characterize the input beam Development of BPM receiver electronics

  2. EEX at the AWA AWA photoinjector: Q=100pC; K= 12 MeV; Laser: sx=sy=2.5 mm; sz=1.15 ps; EEX beamline: Q=15 deg; hx = 25 cm; k=4 Photoinjector TQ1,TQ2,TQ3 Gun Linac Emittance Exchanger YAG1 YAG2 GV GV ICT1 TM110 initial ex=10 mm ey=10 mm ez= 3 mm Overall Goal: exchange small eNz for large eNx final ex= 3 mm ey=10 mm ez= 10 mm

  3. 1. SIMULATIONS: ImpactT sims of the EEX Thick lens simulations (exact cavity fields and dipole field maps) done, collective effects next. ez= 10 mm ex=10 mm ex=3 mm ez= 3 mm ImpactT Simulations

  4. (Planned) Experiment to characterize the input beam Input to Exchanger ex=10 mm ey=10 mm ez= 3 mm Laser Input Q=100pC sx=sy=2.5 mm sz=1.15 ps 12 MeV 5 MeV TQ1,TQ2,TQ3 Gun Linac YAG1 YAG2 GV GV ICT1 45 MV/m 16 MV/m Goal: Verify we can generate proper input beam

  5. (Planned) Experiment to characterize the input beam (elliptical laser/flat beam) Input to Exchanger ex=26 mm ey=1 mm ez= 10 mm Laser Input Q=100pC sx=2.13 mm sy=21.3 mm sz=1.15 ps 12 MeV 5 MeV TQ1,TQ2,TQ3 Gun Linac YAG1 YAG2 GV GV ICT1 45 MV/m 16 MV/m Goal: Verify we can generate proper input beam

  6. (Planned) Experiment to characterize the input beam • Preparation • Laser room generate and characterize short bunch (done) • elliptical laser profile  Use cylindrical telescope to generate profile; Test with relay imaging system; • Transverse Emit • quad scan simulation, imaging system resolution • Scanning slit design, fabricate, install in long stroke actuator, setup ICCD camera (probably unnecessary) • Longitudinal Emit • Linac phase scan simulation (~done), imaging system resolution • Longitudinal Bunch Length • Bolometer based CSR relative measurement

  7. Example with a “real” long. phase space HEAD ez=22.97 mm Longitudinal phase space out of the AWA rf gun just downstream of the booster TAIL

  8. Example with a “real” long. phase space “crest phase” Uncorrelated fractional momentum spread Related to inco-ming chirp (dd/dz)

  9. Example with a “real” long. phase space uncorrelated 9.98 10-4 thin 22.97 10-6 thick -4.0 10-6 4.3 10-3

  10. Example with a “real” long. phase space uncorrelated 9.98 10-4 thin 22.97 10-6 thick -4.0 10-6 4.3 10-3

  11. Rail Spectrometer Diagnostic Rail YAG4 YAG5 Slits BPM ICT2 • ODR/OTR target • Pepper Pot (1nC) • YAG • Slit (100 pC) • Kapton only • Resolution Target 510 394 501 551 356 470 336.9 419 454.5 322.3

  12. BPM receiver

  13. BPPM receiver board

  14. LOG AMP S & H SUM Difference Phase Comp

  15. NI- Multisim Simulation tool

  16. The End

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