october, 2009 internal review beam instrumentation david gassner
TRANSCRIPT
October, 2009
October, 2009
Internal Review
Beam Instrumentation
David Gassner
October, 2009
2
Beam Instrumentation
• Measure – Position
– Current
– Profiles
– Emittance
– Loss
– Halo
– Polarization
– Path Length
– Arrival Time (phase) versus Beam Energy, M56
Also Included– Ion Clearing Electrodes– Scrapers– SRF Cavity HOM Power Monitors– Wien Filter (spin rotator)
Estimates based on:- BNL Energy Recovery Linac- Colleagues at JLAB CEBAF
October, 2009
Position & Current
3
Position & PhaseButton pick-up electrodes, 3 apertures sizes: 1cm, 2.5cm, 10cm
231 dual plane BPM’s
Libera Brilliance Electronics
High accuracy, low drift, built in processor, GB Ethernet, beam inhibit, etc . .
Average orbit, 0.1-100mA, Single bunch, 0.1-5nC Multi-pass regions; 6 beams, each different energy, 3 accelerating, 3 decelerating.
Path Length, Arrival Time versus Beam Energy, M56
Strip-line BPM’s (8), and thermally stabilized copper 1-cell cavities (6)
Current- Average beam current monitoring, DCCT (10)
Bergoz NPCT (New Parametric Current Transformer)
Resolution ~ 1uA/sqrt(Hz), DC-10kHz
Differential configuration, monitor current recovery %, beam inhibit input.
Reduce thermal drift effects by common null current through calibration windings
- Single bunches or bunch trains
Bergoz Integrating Current Transformer (10)
- Faraday Cups: biased, impedance matched (4)
October, 2009
4
Loss & Polarization
Beam Loss Monitors – Primary Machine Protection
Hamamatsu PMT 931B (JLAB) 64 detectors
100nA sensitivity, self test
<1us response
<10us fast beam turn-off
Long Ion chambers (heliax cables), 36 detectors
Calibrated, continuous coverage
PolarimetersLow Energy - Mott
Thin foil target, destructive, low current only, rapid, precise measurements
High Energy - Compton
Laser, continuous, non-destructive, detect scattered electrons & photons
Wien Filter
Low energy spin rotator (E & B field) to orient polarization
October, 2009
Profile Monitors
5
Profiles (transverse & longitudinal)• Screens, YAG & OTR (plunging, FireWire CCD cameras) 64 • Synch light (Injector 2, Arcs 7 X 2 = 14) total 16• Halo Monitors (wires, high resolution, but slow) before Linac & each arc (8)• Pepper Pot, low energy H & V emittance, using mask & screen• Streak Cameras (2) - Hamamatsu C5680
• Cherenkov viewer, bunch length, ps resolution
Also Included:• Ion clearing electrodes, 30 locations, 300V• Scrapers at injector, (4) dual jaw, localize halo losses• Schottky Diodes (SC Cavity HOM power monitor) 2/cavity• Thermal imaging cameras, monitor beam pipe heating at injection (hard to
measure losses)
JLAB Ion Clearing Electrode
October, 2009
Beam Instrumentation Quantities
6
Injector/Dump Arcs Linacs TransportsBPM - Orbit 15 112 14 90BPM - Phase 2 7 7DC Current 2 6 2Fast Current 2 6 2Faraday Cup 1 2 1Screens - Profile 10 14 4 36Pepper Pot 1Scraper 4Halo Monitors 2Synch Light 2 14Streak Camera 1 1Beam Loss Monitors 18 16 20 64Schottky Diodes 144Ion Clearing Electrodes 10 10 10Dump Thermocouples 4Thermal Camera 2 2Polarimeter 1 1Wien Filter 1
663 items
October, 2009
7
Estimate by phase with contingency
WBS 1.8 SummaryDiagnostics
Direct Labor
Direct Material Contingency $
Contingency %
Total Direct dollars
Burdened Labor
Burdened Material
Contingency $ Burdened
Total Burdened
dollars
PED/EDIA 551 20 176 31% 746 797 25 253 1,074
Construction 1,161 9,100 3,125 30% 13,386 1,669 10,013 3,560 15,242
Installation 1,399 0 427 31% 1,827 2,024 0 618 2,642
Commissioning 226 0 69 31% 295 326 0 100 427
Total 3,337 9,120 3,797 31% 16,254 4,817 10,038 4,531 19,385
FY09 Direct K dollars FY09 Burdened K dollars
October, 2009
Labor hours, FTEs, $
WBS 1.8 SummaryDiagnostics
Total Hours
Central Shops Designer Engineer
IT Professional Scientist Technician
Direct dollars
Burdened dollars
PED/EDIA 7,980 0 2040 4480 160 520 780 551 797
Construction 17,012 300 1160 6600 960 440 7552 1,161 1,669
Installation 21,488 0 352 5220 0 400 15516 1,399 2,024
Commissioning 3,018 0 0 1380 0 480 1158 226 326
Total 49498 300 3552 17680 1120 1840 25006 3,337 4,817FTEs 28.1 0.2 2.0 10.0 0.6 1.0 14.2
Labor (FY09$K) no contingencyHours Estimated
October, 2009
Estimated Material $
WBS 1.8 SummaryDiagnostics
Purchases<$25K
Purchases >$25K< $600K
Purchases > $600K Travel Total
FY09 Burdene
d K dollars
PED/EDIA 20 - - - 20 25
Construction 1,090 3,585 4,425 - 9,100 10,013
Installation - - - - - 0
Commissioning - - - - - 0
Total Dollars 1,110 3,585 4,425 0 9,120 10,038
FY09 Direct K dollars