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Beam Line BPM Filter Module. Nathan Eddy May 31, 2005. 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. - PowerPoint PPT Presentation
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BPM Upgrade 2
Analog FilterGain/Att
PickupIn Tunnel
Cables (RG8/RG213) to Service Building
EchotekDigitize &
Downconvert
PPC ControllerCalculate
Position & Intensity
VME
Front Panel
Cables
ACNET
Analog FilterGain/Att
Clock Trigger
A,B
A
B
RackIn ServiceBuilding
VMECrate
Ethernet
Beamline BPM Upgrade – System OverviewBeamline BPM Upgrade – System Overview
BPM Upgrade 3
PP
C C
on
troller
CD
Clo
ck Bo
ard
Ech
otek
Ech
otek
Ech
otek
Trig
ger F
ano
ut
IP M
od
ules
VME Backplane
PPC Controller – handles front end software, readout, and communication
CD Clock Board – provides each Echotek board with clock input (74MHz)
Echotek – digitizes & downconverts the 8 analog inputs (4 bpms)
Trigger Fanout – generates trigger input for each Echotek from BeamSync
IP Modules – modules to decode TCLK, generate triggers, calibration I/O
An
alog
Filter
An
alog
Filter
An
alog
Filter
Analog Filter – filters, attenuates, & amplifies analog signal as needed
Ethernet
Test/C
trl Mo
du
le
Test/Ctrl Module – handles setup of filter modules including test pulses
BPM Cables from Tunnel
Digital PS
Linear PS
Separate crate for Analog Modules – linear PS & existing control software
Beamline BPM Upgrade – Electronics OverviewBeamline BPM Upgrade – Electronics Overview
BPM Upgrade 4
Beamline BPM Upgrade – Analog Filter ModuleBeamline 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
A=B, A<B, A>B Continuous or Triggered Pulse
Proto Type 2 layer board Done by EE support Checkout since mid Feb 2 channels, no test circuit
Production Boards 5 in hand First board with test circuit Made minor modifications Full Quantity (50) available in
June – Order this week
BPM Upgrade 5
Filter Module TestingFilter 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) Analog 2.5MHz and 53MHz paths look fine Checkout control & test features Made minor modification to test input signals
Total 2 months over estimated time to produce production boards
BPM Upgrade 6
Filter Board CartoonFilter Board Cartoon
BP
LP LP
AlteraMax
CPLD
Osc
Gnd
TestInput
Input
MonitorOut (/10)
Output
G=39
G=6
G=2
-22db
Switch, Op AmpControl
TestInput
2.5MHz
53MHz
BPM Upgrade 8
Beamline BPM Upgrade – Initial TestingBeamline BPM Upgrade – Initial Testing
Teststand on 2nd floor Transfer Gallery for initial testing Full VME system – ppc, echotek, trigger modules, clock
prototype Using Prototype Analog Module Using R25 diagnostic application Used to evaluate system performance and digital filter
testing
2.5MHz Pbars
0
50
100
150
200
250
300
5 10 50 100
Bunch Intensity (e9)
Po
siti
on
Res
olu
tio
n (
um
)
Expected Resolution
BPM Upgrade 9
Beamline BPM Upgrade – Initial InstallationBeamline BPM Upgrade – Initial Installation
Have 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
Fast Time PlotData Logger
BPM Upgrade 10
Beam Signal ParametersBeam Signal Parameters
ModeBunch Intensity
(e9)Cable Length (ft) Range (dB)
1 Proton Bunch to TeV 250 - 400 171 - 621 10.5
4 Pbar Bunches to TeV 10 - 170 142 - 651 31.8
Stacking Protons (84) 40 - 130 120 - 621 17.3
Reverse Protons (7-35) 3 - 15 120 - 651 21.5
2.5MHz Pbars (4) 5-100 120 - 651 33.5
Max Echotek input 1.1Vpp Measurement range requirements +/-15mm Yields 900mVpp maximum at 0mm (A=B) Choose to use 700mVpp to give some headroom
BPM Upgrade 11
Arm & Trigger EventsArm & Trigger Events
Transfer Lines TCLK MIBS Delay
Prot MI to TeV P1 $4D $7C 2.7 sec
Pbar MI to TeV A1 $40 $7B 6.7 sec
Prot TeV to MI A1 $5D $D8 6.7 sec
Prot MI to Target P1,P2,AP1 $80 $79 1 sec
Prot MI to Acc P1,P2,AP1,AP3 $93 $7E 2.5 sec
Pbar Acc to MI AP3,AP1,P2,P1 $91 $7A 22.6 sec
Recommended