Difference between revisions of "20171116-JleicBunchFormation"
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__NOTOC__ | __NOTOC__ | ||
− | =Nov 16 2017 [[JLEIC-Ion-Integration-Meetings|JLEIC Bunch Formation Meeting]] = | + | =Nov 16 2017 [[JLEIC-Ion-Integration-Meetings|JLEIC Ion Bunch Formation Meeting]] = |
+ | |||
+ | * Todd, Yuhong, Jiquan, Ed, Randy (Vasiliy) | ||
== Objectives == | == Objectives == | ||
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* Identify any concerns with existing baseline bunch formation scheme | * Identify any concerns with existing baseline bunch formation scheme | ||
* Develop short-term plans to address any concerns | * Develop short-term plans to address any concerns | ||
− | * Document baseline bunch formation scheme (for TDR) | + | * Document baseline bunch formation scheme (for TDR and Randy's dissertation) |
+ | |||
+ | == Current baseline == | ||
+ | * As Todd understands it :) ([https://indico.bnl.gov/getFile.py/access?contribId=4&sessionId=1&resId=1&materialId=slides&confId=3492 Todd Oct 10 collaboration meeting talk, slide 12]) | ||
+ | ** All energies are Kinetic! | ||
+ | ** All injection space charge limits are set to 0.15 | ||
+ | * Linac ([https://indico.bnl.gov/getFile.py/access?contribId=5&sessionId=1&resId=1&materialId=slides&confId=3492 Brahim Oct 10 collaboration meeting talk]) | ||
+ | ** 200 MHz microbunching structure from linac, up to 10 Hz | ||
+ | ** H-: 280 MeV | ||
+ | *** 2 mA, 0.5 ms, 1 uC (6.24e12)/pulse | ||
+ | *** 90% norm emit (2.3 pi-mm-mrad, 8.8 pi-ns-keV) | ||
+ | *** rms sigmaE/E 1.0e-4 (or lower, scaled) | ||
+ | ** Pb67+: 100 MeV/u | ||
+ | *** 0.5 mA, 0.5 ms, 0.25 uC (2.33e10)/pulse | ||
+ | *** 90% norm emit (0.8 pi-mm-mrad, 4.6 pi-ns-keV/u) | ||
+ | *** rms sigmaE/E 0.8e-4 (or lower, scaled) | ||
+ | *** Pb30+ to Pb67+ stripping at 13 MeV/u | ||
+ | * Booster (Ed, Todd) | ||
+ | ** 280m circumference ('''Probably will go up''') | ||
+ | ** Dispersive injection ('''Probably will shift to non-dispersive injection''') | ||
+ | ** h=1 capture, acceleration, compression, and extraction | ||
+ | ** h=1 bunch rotation to match collider bucket for bucket to bucket transfer | ||
+ | ** p: 280 to 7061 MeV (1218 to 8000 MeV total E) | ||
+ | *** H- to p charge exchange injection, 350 turns, coasting beam | ||
+ | ** Pb67+: 100 to 1792 MeV/u (1031 to 2723 MeV/u total E/u) | ||
+ | *** Cooling pulsed injection, several pulses, coasting beam | ||
+ | *** Strip to Pb82+ in transfer line | ||
+ | * Collider (Vasiliy, Randy) | ||
+ | ** 2153m circumference | ||
+ | ** Bucket to bucket fast kicker injection | ||
+ | ** h=28 capture, acceleration | ||
+ | ** RF 2<sup>7</sup> adiabatic bunch splitting at top energy, h=28 to h=2*2<sup>7</sup>=3584 | ||
+ | ** Bunch compression to 1-1.2cm design bunch length | ||
+ | ** Barrier bucket, RF shifting as needed to adjust harmonic number (3580-3588) | ||
+ | ** p: 7.061 to 100 GeV (8 to 100.938 GeV total E) | ||
+ | ** Pb82+: 1.792 to 40 GeV (2.723 to 40.931 GeV total E) | ||
+ | ** DC cooling at injection, ERL cooling at top energy |
Latest revision as of 10:09, 16 November 2017
Nov 16 2017 JLEIC Ion Bunch Formation Meeting
- Todd, Yuhong, Jiquan, Ed, Randy (Vasiliy)
Objectives
- Summarize existing baseline bunch formation scheme
- Identify any concerns with existing baseline bunch formation scheme
- Develop short-term plans to address any concerns
- Document baseline bunch formation scheme (for TDR and Randy's dissertation)
Current baseline
- As Todd understands it :) (Todd Oct 10 collaboration meeting talk, slide 12)
- All energies are Kinetic!
- All injection space charge limits are set to 0.15
- Linac (Brahim Oct 10 collaboration meeting talk)
- 200 MHz microbunching structure from linac, up to 10 Hz
- H-: 280 MeV
- 2 mA, 0.5 ms, 1 uC (6.24e12)/pulse
- 90% norm emit (2.3 pi-mm-mrad, 8.8 pi-ns-keV)
- rms sigmaE/E 1.0e-4 (or lower, scaled)
- Pb67+: 100 MeV/u
- 0.5 mA, 0.5 ms, 0.25 uC (2.33e10)/pulse
- 90% norm emit (0.8 pi-mm-mrad, 4.6 pi-ns-keV/u)
- rms sigmaE/E 0.8e-4 (or lower, scaled)
- Pb30+ to Pb67+ stripping at 13 MeV/u
- Booster (Ed, Todd)
- 280m circumference (Probably will go up)
- Dispersive injection (Probably will shift to non-dispersive injection)
- h=1 capture, acceleration, compression, and extraction
- h=1 bunch rotation to match collider bucket for bucket to bucket transfer
- p: 280 to 7061 MeV (1218 to 8000 MeV total E)
- H- to p charge exchange injection, 350 turns, coasting beam
- Pb67+: 100 to 1792 MeV/u (1031 to 2723 MeV/u total E/u)
- Cooling pulsed injection, several pulses, coasting beam
- Strip to Pb82+ in transfer line
- Collider (Vasiliy, Randy)
- 2153m circumference
- Bucket to bucket fast kicker injection
- h=28 capture, acceleration
- RF 27 adiabatic bunch splitting at top energy, h=28 to h=2*27=3584
- Bunch compression to 1-1.2cm design bunch length
- Barrier bucket, RF shifting as needed to adjust harmonic number (3580-3588)
- p: 7.061 to 100 GeV (8 to 100.938 GeV total E)
- Pb82+: 1.792 to 40 GeV (2.723 to 40.931 GeV total E)
- DC cooling at injection, ERL cooling at top energy