beam stability wbs u 1.03.02.02 and spx diagnostics wbs u 1.03.03.08

Beam StabilityWBS U1.03.02.02

and

SPX DiagnosticsWBS U1.03.03.08

Glenn DeckerGroup LeaderAPS Accelerator System Division Diagnostics

DOE Lehman CD-2 Review of APS-Upgrade4-6 December 2012

Outline

Beam Stability Technical Motivation WBS Scope – Beam Stability Staff / Org Chart Requirements Design Interfaces Risks ES&H Cost Schedule SPX Diagnostics

2

DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012

Beam Stability Technical MotivationWBS U1.03.02.02

APS orbit correction system has a lot of out-of-date hardware. Modernization of select beam position monitoring and

feedback systems will benefit the entire APS user community. With over 15 years of operational experience, the upgrade is

tailored to the noise spectrum and lattice specific to APS.

3


Beam Stability and SPX Beam Diagnostics Project Scope and WBS Level 4U1.02.03.08, U1.03.02.02, & U1.03.03.08

4


k$Labor Nonlabor TOTAL

U1 1,851 5,779 1,040 568 9,296 02.01.03 - Diagnostics R&D 80 1 - 16 98 03.02.02 - Beam Stability 1,333 5,482 935 541 8,292 03.03.08 - SPX Diagnostics 437 296 104 10 906

DIRECT (k$)WBS

ESCALATION ($k)

DIV OH + ANL G&A ($k)

Beam Stability RequirementsWBS U1.03.02.02

APS-U Beam Stability Physics Requirement Document APS_1428984

Based on 5% of transverse beam dimensions up to 200 Hz and 10% up to 1 kHz.

5


Beam Stability Org ChartWBS U1.03.02.02

6


Existing APS Beam Position Monitoring – One Sector

7

*PUE = Pickup Electrode** AM/PM = Amplitude toPhase conversion

***

(Bergoz)


Beam Stability ScopeWBS U1.03.02.02

8

*Note that GRID XBPM mechanical assemblies are in WBS 1.05.02 Front End Upgrades.

Item Scope Expected Improvement

New BPM electronics and data acquisition

80 high-resolution rf BPMs,80 Bergoz rf BPMs,70 ID photon BPMs,70 BM photon BPMs

Factor of 2, AC noise floor.

New hard x-ray BPM systems*

14 units installed in new front ends

Factor of 2, long-term pointing stability

Real-time feedback system

Complete replacement with modern components

Extend closed-loop bandwidth from 60 to 200 Hz; reduce AC beam motion by a factor of 4.

BPM mechanical motion sensing

Install for 14 GRID XBPMs and 68 rf BPMs

Factor of 2, long-term drift


RF BPM ElectronicsWBS U1.03.02.02.01.01, U1.03.02.02.01.02

9

G. Decker, BIW10

nm rm

s


10

State-of-the-art Commercial Solution I-Tech Libera Brilliance+

WBS U1.03.02.02.01.01

Noise floor approaching 2 nm / √Hz Long-term drift 200 nm p-p / 24 hours* Integrated User FPGA support for feedback system development Planned for small-aperture insertion device vacuum chambers for best source point control

* Guenther Rehm, Diamond Light Source, EPAC 2008


11

BPM Electronics APS BSP-100 Data Acquisition

WBS U1.03.02.02.01.02 Eight channels/board, 88 MS/sec

sampling. Altera FPGA processing. One second (262144 samples) turn-

by-turn beam history for machine studies / fault diagnosis.

Demonstrated noise floor < 10 nm / √Hz.

Used for ongoing broadband BPM upgrade (programmatic).

Planned for Bergoz rf BPM and legacy photon BPM data acquisition upgrade.


Grazing incidence allows access to extremely high beam power (two U3.3 undulators at up to 150 mA).

X-ray fluorescence reduces stray radiation background signals significantly. Use of two two-pixel (above, below midplane) pinhole cameras allows two

independent measures of vertical x-ray beam position. Inboard / outboard difference provides measure of horizontal beam position. The upstream position monitor is referred to as the Grazing-Incidence Insertion

Device X-ray Beam Position Monitor (GRID-XBPM). Subject of Bingxin Yang’s talk to follow.

12

S5 S1Undulator(s)

XBPM1

Corrector-B

Corrector-A

PHC-AB

"Stray Radiation"

Decker Fan

EM(18.6 m) (25 m)& Dipole Fan

PHC-CD

PS2(22 m)

BeWindow

IM1 IM2XBPM2XBPM1

PHC = Pinhole CameraIM = Intensity MonitorPS = Photon ShutterEM = Exit Mask

Next-Generation X-ray BPM SystemWBS U1.05.02


GRID-XBPM

Real-time Feedback System UpgradeWBS U1.03.02.02.02

Maximum 160 BPMs, 38 fast correctors

Sample rate 1.537 kHz Based on 15-year-old digital

signal processors, reflective memory

3 dB BW = 60 Hz (H), 100 Hz (V)

13

Maximum approx. 500 BPMs, 70 fast correctors, 250 slow correctors

Sample rate Frev / 14 = 19.4 kHz Based on extremely high-speed

FPGA data protocols Access to phase detectors, beam

tilt monitors supporting SPX Interfaced to main and SPX low-

level rf (LLRF) systems 3 dB BW > 200 Hz (correctors

only), 1 kHz (w/ lord feedback) Full-time FPGA expert (R. Lipa)

hired into Diagnostics Group April 2012

Existing System Upgraded System


Real-time Feedback System Upgrade cont’dWBS U1.03.02.02.02

14

APS RTFB ESD ICMS APS_1431171DOE Lehman CD-2 Review of the APS Upgrade Project 4-6 December 2012

Director's CD-2 Review of the Advanced Photon Source Upgrade Project 11-13 September 2012

15

First Fast Feedback Simulation Results

Integrated Spectrum

Feedback Off*

Feedback On

Raw Horizontal Spectrum

*Feedback off data derived from measured beam spectrum

SynchrotronTune

360 Hz fromMain RF

BPM Mechanical Motion SensingWBS U1.03.02.02.03

16

Commercially-available capacitive motion sensors have sub-nm resolution.

Mechanical Design using invar supports integrated into GRID support system, pending for insertion device vacuum chamber monitoring.


17

BPM Mechanical Motion Sensing Cont’dWBS U1.03.02.02.03


Beam Stability Required InterfacesWBS U1.03.02

Feedback system interface control documents to be written:– Monopulse rf BPMs, Bergoz (narrowband) rf BPMs, Libera BPMs– Existing x-ray BPM electronics– GRID xBPM system data acquisition electronics– Steering corrector power supply controller– EPICS, including enumeration of process variables and their functions– Timing, including the APS event system– SPX diagnostics in sector 5– Main 352 MHz low-level rf– SPX 2815 MHz low-level rf– The APS machine protection system (MPS)

18


Beam Stability RisksWBS U1.03.02

No major risks– Beam stability could be temporarily degraded.

Single vendor for high-resolution rf BPMs possible concern. Estimates and designs have been refined since last CD-1

review. First high-power GRID XBPM tests completed, reducing

technical risk substantially.

19


Beam Stability ES&HWBS U1.03.02

20

Integrated Safety Management System (ISMS)– APS-U Project follows Argonne’s ISMS program requirements – Argonne Integrated Safety Management System (ISMS) Description

recently revised and submitted to DOE ASO• Describes framework for integrating ESH requirements with mission

objectives• References Argonne LMS procedures which implement specific portions

of the ISMS

All electrical safety practices will be adhered to.– Diagnostics has its own designated electrical equipment inspector

(NRTL). The APS work request system will be used for work planning

and control.


Response to Review Committee Recommendations Machine Advisory Committee – Accelerator Physics 5/18 - 5/19 2012 (MAC 2012)

“We recommend using the opportunity of this upgrade to move to an integrated, state of th e‐ ‐ ‐art (orbit feedback) system and not to remain constrained by limitations of existing legacy systems. We caution that this is a significant manpower effort and suggest thinking about collaborations with other light sources (US or elsewhere).”–Response: A cell controller board has been borrowed from NSLS-II for evaluation, and feedback simulation efforts have been initiated in collaboration with NSLS scientists. In addition, a workshop on feedback is being planned.

MAC 2012“…the beam-based feedback systems for SPX need further thought and detailed simulations. Ideally these systems would be integrated into the overall feedback system.”–Response: The present design is planned to be interfaced to both the main rf and SPX rf systems.

CD-2 Director’s Review 9/11 - 9/13 2012“The cost estimates for … mechanical motion sensors may benefit from value engineering.”–Response: See next slide …

21


Beam Stability Value EngineeringWBS U1.03.02

Evaluation of alternative methodologies for mechanical motion sensing are being explored with programmatic funding:– A nano-positioner and

capacitive proximity sensor have been procured for evaluation.

The APS-developed BSP-100 data acquisition module is being used in as many applications as possible.

22


An APS-designed LCLS-style cavity BPM with fixed antenna has been constructed.

Antenna

Cavity

Pickup

Beam Stability and SPX Beam Diagnostics Project Scope and WBS Level 6U1.02.03.08, U1.03.02.02, & U1.03.03.08

23


k$

Labor Nonlabor TOTALU1 1,851 5,779 993 672 9,296

02 - RESEARCH & DEVELOPMENT (R&D) - Accelerator Systems 80 1 - 16 98 02.01 - Accelerator Systems R&D 80 1 - 16 98

02.01.03.08 - Diagnostics R&D 80 1 - 16 98 03 - ACCELERATOR SYSTEMS 1,770 5,778 993 656 9,198

03.02 - Storage Ring Technical Components 1,333 5,482 935 541 8,292 03.02.02 - Beam Stability 1,333 5,482 935 541 8,292

03.02.02.01 - BPM Electronics (40) 215 1,824 187 115 2,341 03.02.02 - ACWP 23 - - 5 28 03.02.02.01.01 - ID RF BPM's 55 1,154 117 53 1,379 03.02.02.01.02 - Bergoz Upgrade 46 80 9 13 147 03.02.02.01.03 - X-Ray BPM Electronics 91 590 62 43 786

03.02.02.02 - Realtime Feedback Upgrade (1) 632 558 170 179 1,540 03.02.02.03 - BPM Mechanical Motion Sensing (34) 349 3,100 556 200 4,204 03.02.02.04 - Integration & Installation - Beam Stability 137 - 22 48 207

03.03 - Short Pulse X-ray 437 296 58 115 906 03.03.08 - Diagnostics System 437 296 58 115 906

03.03.08 - ACWP 79 - 1 17 96 03.03.08.01 - Vertical Beam Size Monitor 114 148 20 32 313 03.03.08.02 - Wire Positioning Monitors 139 88 22 37 287 03.03.08.03 - Beam Arrival Time Monitor 106 60 16 29 210

ESCALATION ($k)

DIV OH + ANL G&A

($k)WBS

DIRECT (k$)

Beam Stability and SPX Beam Diagnostics Project Obligation ProfileU1.02.03.08, U1.03.02.02, & U1.03.03.08

24


Beam Stability and SPX Beam Diagnostics Summary ScheduleU1.02.03.08, U1.03.02.02, & U1.03.03.08

25


Beam Stability and SPX Beam Diagnostics BOE Contingency U1.02.03.08, U1.03.02.02, & U1.03.03.08

26


Work between CD-2 and CD-3

Work Remaining for CD-3– Perform first article GRID XBPM in-tunnel tests.– Finalize GRID-XBPM electronics and data acquisition design.– Complete real-time feedback hardware component selection.– Ramp up feedback simulation efforts in collaboration with BNL.– Perform mechanical motion sensing system mechanical design

and prototype.– Finalize all ESDs and ICDs.

Beam Stability Electronic Systems Design Review

27


Beam Stability Summary

28

Beam Stability upgrade preliminary design is complete. Beam Stability Physics Requirement Document drives

— BPM and real-time feedback system design— SPX stability requirements— ID field quality specifications

The cost is $8,292k We are ready for CD2.


Other Diagnostics-Related Activities

1.03.03.08 SPX Diagnostics1.02.01.03.08 SPX0 Diagnostics (descoped)1.05.02.11 Next-Generation X-ray BPM System for HHL1.05.02.12 Next-Generation X-ray BPM System for CU

29


SPX Diagnostics Scope of WorkWBS U1.03.03.08

30


Beam Arrival Time MonitorWBS U1.03.03.08.03

31

Technology based on existing APS linac s-band phase detector system.

Interface uses APS BSP-100 data acquisition. Specifications not too demanding – a fraction of

the bunch length.


Beam Arrival Time Jitter Power Spectral Density

32

SynchrotronTune

360 Hz fromMain RF

60 Hz

στ = 2.1 ps = rms jitter, 0.3 Hz to 3 kHz

Note: the rms bunch length for 24-singlets fill pattern is 33.5 ps.

στ(ω) = Square Root of reverse-integrated power spectral density


Application of Phase Detector to Tilt Measurement*

33

Transient excitation of tiltusing a fast vertical kicker** * N. Sereno et al., BIW2012

**W. Guo, PRST-AB 10, 020701 (2007)

Vertical Bunch Position

Phase Detector Output

Vertical / Longitudinal Tilt


Wire Position Monitor Test StandWBS U1.03.03.08.02

34

Courtesy of Bob Lill


High-Resolution Beam Size MonitorWBS U1.03.03.08.01

35


High-resolution (9 microns rms) beam size monitor to be installed at unused bending magnet radiation port.

Bandwidth > 1 Hz

SPX Diagnostics SummaryWBS U1.03.03.08

New diagnostics have all been demonstrated:– Beam arrival time (BAT) monitor– Wire position monitor– Repurposing of existing s-band phase detectors to direct tilt monitoring

We are ready for CD2

36


beam stability wbs u 1.03.02.02 and spx diagnostics wbs u 1.03.03.08

Documents

review of aps

aps upgrade project

bergozdoe lehman cd

driftdoe lehman cd

directors cd

biw10nm rmsdoe lehman

beam stabilitywbs u1

beam stability scopewbs