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Booster Beam Notching Installation UpdatePIP Talk
Salah ChaurizeFebruary 20, 2013
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Notching Pre-Shutdown– A 3 bucket gap is created using two kickers located at Long 5
and Long 12• Notcher – A High Voltage(55kV) Kicker at Long 5• Noker - Lower Voltage Kicker (20-40 kV) at Long 12– Used to clean out remnant Notched Beam in bucketsAt 700 MeV
– Beam is kicked vertically into collimator region at Long 6 and Long 13 with upstream gradient magnets seeing some deposited notched beam loss.
– The notch timing and synchronization is accomplished by modules in the Booster LLRF Room and local timing modules.
– Beam notch for non-cogged cycles occurs at 400 Mev– Cogged notch occurs close to 700 MeV
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Notching Post Shutdown– A 3 bucket gap is created using three 1M Long kickers located
at Long 12• 3 Notchers – High Voltage(46kV) Kicker at Long 12• Notcher converted to NOKA• Noker converted to NOKB• Build/Commission new NOKC.
– Beam is kicked Horizontally into new absorber at Long 13 – The notch timing and synchronization is accomplished by
modules in Booster LLRF Room. (Same as before)– Extra Wide Aperture BPM and Short Corrector Spool needed.– Beam notch for non-cogged cycles occurs at 400 Mev. (Same
as before)– Cogged notch occurs close to 700 MeV. (Same as before)
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The Notch3 Bucket Notch Width
non-cogged Cycle Notch @ 400MeV Cogged Cycle
Notch @ ~700MeV
Extraction Loss
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L5 Notcher Current LocationNotcher magnet will be moved to L12
Vertical Pinger magnet will be removed from L12 and put here in its place
Notcher Hor. Pinger
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L5 NotcherPower supply components such as these
Will need to be moved to support Long 12 region
CX1168 tube Low Level equipment
CX1168 tube cabinet
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L12 Pre-shutdown
De-commissioned Horz. Pinger
Ver. PingerNokerMKS04
Beam direction
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L12 Post Shutdown
NOKC MKS04NOKBNOKA
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Kicker magnets rotated to kick Horizontally
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Kicker magnets rotated to kick Horizontally
Kicker MagnetBeam tubes exposed
for alignment
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L12 Noker & Extraction Kicker MKS04Power supply components such as these
will need to be installed/relocated to support notch2 & notch3in east Booster Gallery
CX1168 tube cabinet
Beam sync Modules
and other NIM crateSupport modules.
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Make Room For 2 more systemsIn East Gallery
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Current ConfigurationIn East Gallery
NOKA
NOKB
NOKC goes Here
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Current ConfigurationIn East Gallery
Noker PS Charging Resistors and load resistors
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Current Configuration In East Gallery
NIM Gate Modules Altera Based
CAMAC Controls and Ramp Cards
LeCroy Delay modules & CAMAC Trigger
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Current Configuration In East GalleryAbsorber Motion Controls
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Current ConfigurationIn East Gallery
NOKA
NOKB
NOKC
MKS04
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Long 13
Beam direction
Before
After
Standing at downstream end of absorber
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Long 13 Notched beam absorber
Beam direction
Before
After
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Long 13 New absorber
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Looking upstream towards L13
30”30”
75” 10 ‘
Before After
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Reason to redesign S12 Spool piece
• Need to kick beam horizontally at L12 with beam Nokers to create a notch in the beam.
• Current aperture restriction at S12 is BPM plates and upstream and down stream bellows which are all 4.5in.
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Reason to redesign S12 Spool piece
• New Extra Wide aperture BPM will give us 5 in aperture with new spool.
• New spool would use some of original spool design without the standard BPM components inside and larger aperture bellows at magnet spool flanges
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Extra Wide Aperture BPM
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Extra Wide Aperture BPM
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S12 CorrectorOriginal Standard aperture 4.5 Inch
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S12 CorrectorNew 5” Aperture Spool
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Preliminary Results and Commissioning
– Using 2 Nokers to create gap in beam at 400MeV– S12 New BPM giving data but needs some gain tweaks– Absorber motion controls working well.– Notched beam loss is currently low due to low intensity
running but is as expected.
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Preliminary Results and Commissioning
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Preliminary Results and Commissioning
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Preliminary Results and Commissioning
NOKA(CH1) & NOKB(CH2) Notched Bunches
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Thanks to:-L13 Notched Beam Absorber Assembly-
PPD Experiment Fabrication- L13 Absorber Build and AssemblyD.Erickson, J. Judd, W. Blaszynski, W. GatfieldV. Sidorov - L13 Absorber Mechanical Design
APC Energy Deposition Simulations by- N.Mokhov, I. Tropin, S.Drozhdin M. Coburn L13 Absorber Motion Controls
-L12, S12, L13 Upgrade Support-Mechanical Support/ Instrumentation Groups – L13/S12 BPM and Corrector
R. Reily, B. Ogert, J. Kubinski, J. Briney ,D. Wallace, J. FitzgeraldControls Group CAMAC modules
Booster Techs - Power supply and load reconfiguration New timing module build and support electronics R. Mraz, T. Boes, D. Dick
Operations - Database work , O. Marshall, R. JonesAMG-L12, S12,L13 alignment
Radiation Safety – Joel FulghamConsultation – J. Lackey, B. Pellico
Machine Shop, Welding ShopMany More I missed