Beam Line BPM Upgrade

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Beam Line BPM Upgrade

• Nathan Eddy Elvin Harms
• 21 April 2005

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Beam Line BPM Upgrade

• Introduction/Motivation
• History
• Technical Overview
• Status
• Software
• Implementation Steps
• Acknowledgements
• Summary

3
Beam Line BPM Upgrade - Introduction

• Part of the Rapid Transfers Run II Upgrade
  Project
• Beam Line Regulation
• Software
• Oscillation Feedback Control
• Diagnostics
• Commissioning
• Ultimate goal
• Accumulator to Recycler transfers every 30
  minutes and completed in 1 or 2 minutes

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Beam Line BPM Upgrade - Motivation

• 1.3.6.5.1 Beam line BPM upgrade
• BPM current use
• Reverse protons
• Minimum 30 uniform 53 MHz bunches
• A few E11 intensity
• Beam conditions purposely varied during shot set
  up to minimize necessary intensity
• currently no pbar beam line BPM data
• Reverse proton data sufficient for good pbar
  transmission
• Electronics limitations
• Low intensity
• bunch structure
• Outdated DAQ
• Difficult to integrate with existing software
• Rapid Transfers - no routine reverse proton
  tuneup for rapid transfers
• Use pbars to monitor beam line performance
• Use data to feedback to beam lines tune

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Beam Line BPM Upgrade - Motivation

• Scope of work
• P1, P2, AP1, AP3, A1
• Use existing BPM pickups (53 MHz)
• Upgrade electronics to support all expected beam
  modes
• Modernize DAQ
• Develop applications software to meet beam
  monitoring and tuning needs

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Beam Line BPM Upgrade - History

• Identified as part of Run II Upgrades/Rapid
  Transfers
• Preliminary meeting, Requirements 8/11/03
• No resources allocated/available
• Inventory of existing systems March 2004
• Manpower identified May 2004
• Requirements document v 1.0 released May 2004
• Requirements Review June 2004
• Re-reviewed/notice to proceed with design - July
  2004
• Rack at F23 September 2004
• Installation Schedule developed October 2004
• Project review October 2004
• Crate running at F23 February 2005
• First Pbar beam signals March 2005
• Expected close out summer 2005

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Beam Line BPM Upgrade Requirements
P1 line
Beams Document 1279-v3.3
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Beam Line BPM Upgrade Requirements
P2 line
Beams Document 1279-v3.3
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Beam Line BPM Upgrade Requirements
AP1 line
Beams Document 1279-v3.3
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Beam Line BPM Upgrade Requirements
AP3 line
Beams Document 1279-v3.3
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Beam Line BPM Upgrade Requirements
A1 line
Beams Document 1279-v3.3
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Beam Line BPM Upgrade Requirements
Beams Document 1279-v3.3
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Beamline BPM Upgrade Technical Overview

• Use BPM pickups already in place (4 styles)
• MI8, Main Ring, Accumulator, Debuncher
• Use cables currently installed (RG8/RG213)
• Examined whether pre-amps needed
• Use Echotek digital receiver to digitize and
  process analog signals
• Use D/S for position, S for intensity
• Used in Recycler, NUMI, Tevatron
• System design draws heavily upon Recycler, NUMI,
  and Tevatron systems
• System Design based upon NUMI model
• Front-end software from Recycler/NUMI
• Same VME crate, Echotek Clock boards used in
  Tevatron

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Beamline BPM Upgrade System Overview
Clock
Trigger
VME
Ethernet
PPC Controller Calculate Position Intensity
Echotek Digitize Downconvert
ACNET
VME Crate
A,B
Front Panel Cables
Analog Filter Gain/Att
Rack In Service Building
A
Pickup In Tunnel
Cables (RG8/RG213) to Service Building
Analog Filter Gain/Att
B
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Beamline BPM Upgrade Electronics Overview
VME Backplane
PPC Controller handles front end software,
readout, and communication
Digital PS
CD Clock Board provides each Echotek board
with clock input (74MHz)
Echotek
Echotek
Echotek
Echotek digitizes downconverts the 8 analog
inputs (4 bpms)
Ethernet
IP Modules
Trigger Fanout
PPC Controller
CD Clock Board
Trigger Fanout generates trigger input for each
Echotek from BeamSync
IP Modules modules to decode TCLK, generate
triggers, calibration I/O
Analog Filter filters, attenuates, amplifies
analog signal as needed
Linear PS
Test/Ctrl Module handles setup of filter
modules including test pulses
Analog Filter
Analog Filter
Analog Filter
Test/Ctrl Module
Separate crate for Analog Modules linear PS
existing control software
BPM Cables from Tunnel
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Beamline BPM Upgrade Analog Filter Module

• 53MHz Bunched Beam
• 1-4 large intensity bunches (TeV)
• 7-84 consecutive bunches (rev P, Stacking)
• 2.5MHz Bunched Beam
• 4 bunches Accumulator to Main Injector
• Test Feature (Electronics)
• Inject 2.5MHz or 53MHz test signal
• AB, AltB, AgtB
• Proto Type 2 layer board
• Done by EE support
• Checkout since mid Feb
• Production Boards
• Expect 5 next week
• Full Quantity (46) available in June

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Beamline BPM Upgrade Test Application
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Beamline BPM Upgrade Initial Testing

• Teststand on 2nd floor Transfer Gallery for
  initial testing
• Full VME system ppc, echotek, trigger modules,
  clock prototype and AWG for signal input
• Using Prototype Analog Module
• Using R25 diagnostic application
• Used to evaluate system performance and digital
  filter testing

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Beamline BPM Upgrade Initial Installation

• New rack installed at F23
• Split pickup signals to both old and new system
• Use for beam commissioning in parallel with old
  system
• Initial installation rack full infrastructure
  currently installed (minus required number of
  filter modules)
• Used to evaluate Filter Module prototype

Data Logger
Fast Time Plot
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Beamline BPM Upgrade Application Software

• BPM Plots/List (I39, P54, T39)
• Configuration control of beamline bpms, make
  measurements and archive data
• APx Lattice (P143)
• Perform orbit measurements and compare with
  archived data, apply orbit corrections
• Reverse Proton Tuneup (P150)
• Similar to P143 for reverse protons
• Pbar Differential Orbit Measurement (P163)
• Gathers orbit data while adjusting trims
  measuring lattice parameters
• Shot Data Acquistion (SDA)
• Expect existing applications to continue to see
  protons with minimal changes
• More extensive modifications or new applications
  will be needed to monitor anti-protons

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Beamline BPM Upgrade Installation Plan

• Complete System Installation at F23 (AP1)
• Infrastructure in place
• Rack, crates, power supplys, cables, etc
• VME electronics complete and operational
• Front-end software complete and being used for
  testing
• Expect to have 2-3 Filter Modules installed in
  mid May
• Complete installation in early June (10 Filter
  Modules)
• Remaining Locations
• AP3 AP30, F27, P1 MI60S, P2 F2, A1 MI60N
• Setup and perform initial checkout on 2nd floor
• Remove old system and install new 1 rack at a
  time
• User software must handle mix of old new for
  protons
• Plan to begin mid June, complete in July

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Beam Line BPM Upgrade - Acknowledgements

• Hardware
• John Van Bogaert, Bob Dysert, Claudio Rivetta
  (SLAC), Craig McClure, Glen Johnson, Bakul
  Banerjee, Bob Forster, Bill Haynes, Vince
  Pavlicek
• Software
• Duane Voy, Charlie Briegel, Bob West, Brian
  Hendricks, Lin Winterowd
• Review process
• Steve Werkema, Ioanis Kourbanis, Valeri Lebedev
• Oversight, Consulting, etc.
• Nathan Eddy, Bob Webber, Peter Prieto, Amber
  Larson, Elvin Harms

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Beam Line BPM Upgrade - Summary

• An upgrade to the P1, P2, AP3, AP3, A1 BPM
  systems has been identified as necessary and is
  included as part of Run II Upgrades/Frequent
  Transfers project
• Upgrade design draws on recent BPM upgrade
  experience (Tevatron, Recycler, NuMI)
• Unique design for both 2.5 and 53 MHz operation
• Design is largely complete testing with beam is
  in progress at F23
• Anticipated completion this summer
• MI upgrade will build on this experience

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Arm Trigger Events
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53MHz Beam Signal Parameters

• Max Echotek input 1.1Vpp
• Measurement range requirements /-15mm
• Yields 900mVpp maximum at 0mm (AB)
• Choose to use 700mVpp to give some headroom

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Filter Module Testing

• 1st Prototype from EE Support in February
• Miscommunication on how to evaluate two solid
  state switch candidates
• Minimized usefulness of board (2 weeks)
• 2nd Prototype from EE Support
• Discovered issue with output op amp unable to
  supply enough current over entire signal range (1
  week)
• Began Real Beam testing at F23 (3 weeks)
• Found that gain/attenuation settings needed
  adjustment
• Found large position variations SW120
  temperature
• Decided to make Prototype run of full board (2
  weeks)
• Total 2 months over estimated time to produce
  production boards

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Beamline BPM Logistics

• MI 60 South, P1 BPMs
• 15 BPMs -gt 4 Echoteks, 8 Analog Modules
• MI 60 North, A1 BPMs
• 16 BPMs -gt 4 Echoteks, 8 Analog Modules
• F1 Service, P2 BPMs
• 9 BPMs -gt 3 Echoteks, 5 Analog Modules
• F23 Service, AP1 AP3 BPMs (now 2 racks)
• 19 BPMs -gt 5 Echoteks, 10 Analog Modules
• F27 Service, AP3 BPMs
• 10 BPMs -gt 3 Echoteks, 5 Analog Modules
• AP30 Service, AP3 BPMs (now 2 racks)
• 19 BPMs -gt 5 Echoteks, 10 Analog Modules
• Totals for 6 racks
• 88 BPMs
• 24 Echoteks (8 ch) 46 Analog Modules (4 ch)
• Max of 5 echoteks 10 Analog Modules per rack