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1 BROOKHAVEN SCIENCE ASSOCIATES Diagnostics & Instrumentation Om Singh - Group Leader 8 th ASAC Meeting for NSLS-II Project May 10-11, 2011
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2 BROOKHAVEN SCIENCE ASSOCIATES Outline Injector Diagnostics - update Storage Ring Diagnostics – update Installation schedule RF BPM Electronics - status Summary
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3 BROOKHAVEN SCIENCE ASSOCIATES NSLS-II Diagnostics Systems SystemsNSLS-II Vendor SRBTSLTBBoosterLinacGun RF BPM – Single Pass865 RF BPM – TBT & Stored Beam18037 ID RF BPM2 or 3 per ID Fill Pattern Monitor (WCM)32 Fill Pattern Monitor (FCT or SL)1221 Faraday Cup121 Beam Charge Monitor (ICT)22 Fluorescent / OTR Screen49966 Energy Slit11 Photon BPMs1 or 2 per BL Stored Beam monitor (DCCT)11 Tune Monitor11 Top-Off Monitor2 X-Ray Diagnostics (BM-A Source)1 X-Ray Diagnostics (3PW Source)1 VSLM Diagnostics (BM-B Source)11 Transverse Feedback (H & V)1+1 Beam Loss Controls - Scrapers3 H +2 V Beam Loss Monitors (Cerenkov, Neutron & Fiber optics BLMs) One set Status update
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4 BROOKHAVEN SCIENCE ASSOCIATES Diagnostics for LTB -1 Commissioning Flag ICT BPM Faraday Cup Faraday Cup FCT Installed but sees no beam Safety Shutter R. Fliller
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5 BROOKHAVEN SCIENCE ASSOCIATES DeliverablesLA qtySA qtyDelivery date PDR4/18/11 FDR5/2/11 1 st article118/10/11 1 st production149/15/11 Final production1312/15/11 Transport Line Flags (by RadiaBeam) D. Padrazo
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6 BROOKHAVEN SCIENCE ASSOCIATES Diagnostics Schedule In Linac Vault In Booster tunnel In SR tunnel
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7 BROOKHAVEN SCIENCE ASSOCIATES Diagnostics Schedule – detail 1
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8 BROOKHAVEN SCIENCE ASSOCIATES Diagnostics Schedule – detail 2
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9 BROOKHAVEN SCIENCE ASSOCIATES Diagnostics in ID straight sections - 1 BbB FDBK Tune Monitor DCCT C03 HXN C29 C16 C22 BPMs (w/ High stability stands ) 6.6 m 9.3 m Kosciuk, Tanabe, Hseush, Hetzel Pingers
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10 BROOKHAVEN SCIENCE ASSOCIATES Diagnostics in ID straight sections - 2 BPMs C05 SRX - Canted C28 XPD C10 IXS C11 CHX C23 CSX - Canted BPMs (w/ High stability stands) BPMs (w/ small aperture buttons) BPMs (w/ High stabilty stands) BPMs (w small aperture buttons) 6.6 m 9.3 m Kosciuk, Tanabe, Hseush, Hetzel
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11 BROOKHAVEN SCIENCE ASSOCIATES SR Girder BPM - PTC
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12 BROOKHAVEN SCIENCE ASSOCIATES RF BPM Electronics - Status Development & prototype – Held a BPM design review with favorable comments – August, 2010 Hardware issue resolved – no drop out; reduced level of power supply noise Processing gain improved – w/ upgraded PLL design & coherent DSP processing Tested AFE-Spin2 with hardware fixes at ALS – 1/2011 Tested Virtex-6 transitional platform at ALS to validate software – 3/2011 Prototyped & tested Pilot Tone Coupler (PTC) & Chassis – 3/11 Upgrade DFE from Virtex-5 to Virtex-6 FPGA – prototype test ongoing - 5/2011 Test with AFE-Spin3 completed w full functionality – 5/2011 Pre-production run (qty=15) – Chassis & PTC order placed – receive & test 6/2011 AFE & DFE order in progress – receive & test 7/2011 Production run – Start procurement for injector (qty=60) – 7/2011 Start procurement for SR (qty=220) – 10/2011
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13 BROOKHAVEN SCIENCE ASSOCIATES Virtex-6 DFE – Status 6 SFP Slots Gigabit Ethernet RS-232 Virtex-6 LX240T FPGA 2Gbyte DDR3 Memory New DFE board is working. Newer Virtex-6 FPGA Larger and cheaper FPGA compared to previous Virtex-5 based board. Permits more room for Digital Signal Processing algorithms Faster DDR-3 improves performance of MicroBlaze soft-core processor. 4 boards received on 4/28/2011 90% tested. All major components working. (status as of 5/4/2011) DDR-3 operating at 800Mbits/s High speed serial links operating at 5Gbit/s Gigabit Ethernet & FLASH memory working Interface to AFE working. 6 more boards expected on 5/18/2011 1Gbyte FLASH Memory J. Mead & K. Ha
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14 BROOKHAVEN SCIENCE ASSOCIATES RF BPM Electronics set up – Quantify BPM resolution DFE – Virtex 6 AFE – Spin3 PTC Synch clocks – Rev clock, ADC clock and RF clock Chassis M. Maggipinto B. Bacha
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15 BROOKHAVEN SCIENCE ASSOCIATES xx yy TBTresults0.37 µm goals5.0 µm3.0 µm 2 kHzresults80 nm goals600 nm400 nm 200 Hzresults40 nm55 nm goals300 nm200 nm BPM Electronics bench test – preliminary results (5/4/2011) TBT 2 kHz 200 Hz Sig gen (~500 MHz) to 1-4 splitter; Splitter output to BPM button inputs Synch clocks – Rev clock = ~378 kHz; ADC clock= ~117 MHz Collected 1 M samples of ADC data points; processed with moving filters K. Vetter BPM resolution exceeds goals Y X
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16 BROOKHAVEN SCIENCE ASSOCIATES Stability data taken during an overnight 11hr period in a thermally stable rack (0.1 deg C) The RMS variation is 0.233 µm and 0.289 µm for X and Y respectively. However, stability goals are 0.3 µm and 0.2 µm. In-band pilot tone technique (next slide) will be used to meet stability goals. BPM thermal drift test A. DellaPenna
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17 BROOKHAVEN SCIENCE ASSOCIATES Software development in progress to implement pilot tone based slow drift compensation Injected pilot tone between 2 nd and 3 rd high-side revolution lines at ALS (2-Cam fill) Measurement show pilot tone band along with revolution lines In band pilot tone technique - plan K. Vetter
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18 BROOKHAVEN SCIENCE ASSOCIATES NSLS-II BPM test results w/ ALS Beam – (single bunch) Test Set-up One SR Button to 1-4 splitter Splitter output to NSLS-II BPM Single bunch I=23mA (15 nC) ADC sampled data One turn Single bunch resolution x = 9.64 microns y = 10.3 microns Meets NSLS-II goals
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19 BROOKHAVEN SCIENCE ASSOCIATES Test Set-up One SR Button to 1-4 splitter Splitter output to NSLS-II BPM Multi bunch I= 500mA NSLS-II BPM test results w/ ALS Beam – (multi-bunch) Multi-bunch TBT resolution x = 1.54 microns y = 1.62 microns Meets NSLS-II goals ADC sampled data
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20 BROOKHAVEN SCIENCE ASSOCIATES TBT 2 kHz 200 Hz xx yy TBTresults1.54 µm1.62 µm 2 kHzresults109 nm181 nm 200 Hzresults52 nm131 nm NSLS-II BPM test results w/ ALS Beam
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21 BROOKHAVEN SCIENCE ASSOCIATES RF BPM Electronics - Schedule All BPM’s installed and tested 2 mo prior to start of commissioning After 8 wks in procurement & 12-wks lag for manufacturing startup, BPM’s are fed in groups of (8) units into test cycle. SR Inj & SR Injector All production run duration expected to be shorter
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22 BROOKHAVEN SCIENCE ASSOCIATES Visible SLM Optics Room Layout Weixing, Fernandes
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23 BROOKHAVEN SCIENCE ASSOCIATES Loss Control & Monitor (LCM) Sub-systems 2m long x 25cm OD Glass Rod Installation in Dipole Inj Section Kramer, Cameron
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24 BROOKHAVEN SCIENCE ASSOCIATES SUMMARY Diagnostics systems are in procurement stage or advanced final design stage Installation, system integration and commissioning schedule have been optimized Injector & SR diagnostics installation is on schedule for machine commissioning RF BPM Electronics In-house design completed for AFE, DFE, PTC & Chassis Pre-production – to complete in 6/2011 Production for injector & SR on schedule – 7/1/11 & 10/1/11
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25 BROOKHAVEN SCIENCE ASSOCIATES Acknowledgment B. Bacha, A. Blednykh, A. Borrelli, P. Cameron, W. Cheng, L.B. Dalesio, J. De Long, P. Ilinski, A.J. Della Penna, L. Doom, M. Ferreira, H. Fernandes, R. Fliller, G. Ganetis, W. Guo, K. Ha, R. Heese, H-C Hseuh, Y. Hu, M. Hussain, E.D. Johnson, B.N. Kosciuk, S.L. Kramer, S. Krinsky, R. Lynch, M. Lucas, M. Maggipinto, J. Malley, J. Mead, A. Munoz, S. Orban, D. Padrazo, I. Pinayev, J. Ricciardelli, J. Rubino, G. Shen, S. Sharma, J. Skaritka, C. Spataro, T. Tanabe, Y. Tian, K. Vetter, W. Wilds, F.J. Willeke, L-H Yu
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26 BROOKHAVEN SCIENCE ASSOCIATES Back up slides
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27 BROOKHAVEN SCIENCE ASSOCIATES Transport Line Diagnostic systems Faraday Cup Energy Slit
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28 BROOKHAVEN SCIENCE ASSOCIATES Mitigation of Resonance Modes in Multipole Chamber – RF Shields Resonance modes With no rf shield Blednykh; Ferreira Hseuh; Kosciuk Blednykh; Ferreira Hseuh; Kosciuk S6 upstream shifts modes to > 800 MHz S2 S4 S6 500 MHz Flexible BeCu RF fingers with 50% of opening space S6 downstream does not shift out of band but can optimize modes location S2 & S4 shifts modes to > 800 MHz
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29 BROOKHAVEN SCIENCE ASSOCIATES SR RF BPM resolution requirement – Stored beam Parameters/ SubsystemsConditions *Multipole chamber RF BPM Resolution Requirement VerticalHorizontal 50 mA to 500 mA Stored beam resolution – 20% to 100 % duty cycle BPM Receiver Electronics Turn by Turn (80% fill)Data rate = 378 kHz3 μm rms5 μm rms Assuming no contribution from bunch/ fill pattern effects 0.017 Hz to 200 Hz0.2 μm rms0.3 μm rms 200 Hz to 2000 Hz0.4 μm rms0.6 μm rms 1 min to 8 hr drift0.2 μm peak0.5 μm peak Bunch charge/ fill pattern effects only DC to 2000 Hz 0.2 μm rms0.3 μm rms Mechanical motion limit at Pick-up electrodes assembly (ground & support combined) Vibrations50 Hz to 2000 Hz10 nm rms 4 Hz to 50 Hz25 nm rms 0.5 Hz to 4 Hz200 nm rms Thermal 1 min to 8 hr200 nm peak500 nm peak *ID straight section RF BPM requirements to be better
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30 BROOKHAVEN SCIENCE ASSOCIATES 6 5 4 3 2 1 2 3 1 SR BPMs and Correctors Fast correctors (Qty=3) Fast response – 2 kHz Weak strength – 15 μrad Utilized for – Fast orbit feedback Slow correctors (Qty=6) Slow response – 2 Hz Strong strength – 800 μrad Utilized for – Alignment Slow orbit feedback BPMs 156 mm slow 100 mm slow 30 mm fast (air core) SC FC
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31 BROOKHAVEN SCIENCE ASSOCIATES Diagnostics Beamlines Two X-ray synchrotron imaging beamlines with PH camera & CR lenses 1 st BM source point in Cell 22 – to measure emittance 3PW source point in Cell 22 – to measure energy spread All optical components are inside tunnel One Visible synchrotron imaging beamline 2 nd BM source point in Cell 30 – to measure temporal and spatial beam properties Location (just downstream of injection straight) - ideal to assist injector tuning A shed for experimental optical table located just outside ratchet wall Design review held in July, 2010 Comment – “Proposed design for all beamlines is effective to meet all critical goals for both commissioning and long-term success of the facility” Status Final design of beam line components in last stage; followed with procurement for optical components
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