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