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AdvisorsDr. Liguang Tang
(http://www.jlab.org/~tangl)
Dr. Dave Mack(http://www.jlab.org/~mack/)
for the beam modulation team
Nuruzzaman
(http://www.jlab.org/~nur/)
Collaboration Meeting18th September 2010
An Update on Beam Modulation
for the Qpweak
Experiment
Overview
OPTIM Simulation
Hardware Issues
Diagnostics
Analysis
Future Plans
Optics Changed – August Current
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
3
Upcoming Fall Run Prediction
4
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
Upcoming Run Currents
Beam Parameter
Modulation Amplitude
Current through 1st Coil I1
(A)
Field Integrals
for 1st CoilBdL1 (G-cm)
Current through
2nd Coil I2 (A)
Field Integrals
for 2nd Coil
BdL2 (G-cm)
Tune Parameters
(BdL2 / BdL1)
X 250 μm 0.16 52 -0.30 -99 -1.885
X΄ 4 μrad 0.078 26 -0.30 -99 -3.808
Y 160 μm -0.30 -99 0.11 36 -0.364
Y΄ 3μrad -0.30 -99 0.25 84 -0.848
N.B: Assuming 1 A= 330 G-cm
Calculation scaled to move beam by X= 250μm, X´= 4μrad, Y= 160 μm and Y´= 3μrad
5
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
Beamline
CoilsX1
Y1
Y2
X2
SRFE
BSY Service Building
BMOD1
X1Y1X2Y2
LEMCurrent
Transducer
X1
Y1
Y2
X2
TRIM-IPower Amp.
BPMs
BMOD2
Hall-C
GUI
CONSOLE
Qpweak PV
Daq.Qpweak Cage
IOChCnmr
TRIUMF
ADC
JLAB
ADC
Hardware Sketch
6
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
0.015 V 1.65 G-cm=
DC Shift Due to Relay
7
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
Predicted Effect from OPTIM for DC Shift
X110 μm
Target
2ndCoil
1st Coil-10 μm
2.5 μm
IC IC
Dump
8
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
Edge Effect in Rampwave Signal
9
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
Modulation Cycle
10
Run # 5230Raster: 2x2Beam Current: 5 μATarget: OUTMain Detector: ONMode: Single Coil ModulationModulation Current: 0.06 A
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
Dedicated test runs for beam modulation taken during the summer are 5230-5235 on 08/09/2010
Modulation Cycle
11
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
Function Generator Signals
12
FG X
FG Y
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
Current Transducer Signals
13
LEM X
LEM Y
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
Response of BPM 3H09 for FGX1
14
3H09X3H09Y
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
Response of Main Detector for FGX1
15
+PMT-PMT
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
Response of Main Detector for FGX1
16
(+PMT)+ (-PMT)
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
Target OUT
Main Detector Sensitivity with BPM 3H09 for FGX1
17
3H09X3H09Y
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
Target OUT
3
7
1 5
4
6
2
8
Future Plans
•Hardware connections were checked and verified several times. Necessary corrections are being modified in software.
•Do test runs after all the corrections (with beam and without beam).
•Analyze data and verify everything is working.
•Need 2-3 hours test with beam to achieve desired tune parameters to get pure position and angle at target. (assuming beam modulation hardware, software, BPMs are in working condition)
•Extract detector sensitivities.
18
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
Extra
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
19
Future Plans
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
20
Future Plans
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
21
3
7
1 5
4
6
2
8
Beamline
CoilsX1
Y1
Y2
X2
SRFE
22
BSY Service Building
BMOD1
X1Y1X2Y2
LEMCurrent
Transducer
X1
Y1
Y2
X2
TRIM-IPower Amp.
BPMs
BMOD2
Hall-C
GUI
CONSOLE
Qpweak PV
Daq.Qpweak Cage
IOChCnmr
TRIUMF
ADC
JLAB
ADC
Extra
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
23
Extra
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
24
Extra
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
25
Extra
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
26
Extra
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
27
Extra
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
28
3h09
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
3H09X3H09Y
29
Extra
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
X1
X2
07A
XY
07A
09B090807C07B07A
09B090807C07B07A
Target
cosθ sinθcosθ -sinθ
XY
07C
X
E
X´
YY´
i
X
E
X´
YY´
T
YX
07A
YX
07C
Edge Effect in Rampwave Signal
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
30
FG vs LEM
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
31
Response of Combined BPM for FGX1
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
32
Response of BPM 3H08 for FGX1
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
33
Main Detector Sensitivity with BPM 3H08 for FGX1
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
34
Main Detector Sensitivity with Combined BPM for FGX1
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
35
General
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
36
Basics
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
θ1
θ2
Z=0 Z=d1
Z=d2
2 1 1
1 1
(d d ) 1θ = T T
d d
2
2 1 1
d 1θ = T T
d d
m m
m m
T = X Y
T = X Y
Where
z
x / y
Forward Beamline
37
Basics
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
We are squeezing our function generators, etc, into a VME crate already in the BSY. We may be asked to upgrade the IOC in that crate.(All the hardware are installed for modulation)
Need to pull some cables from the BSY service building to our parity DAQ in the Qp
weak cage(All the cables are pulled and connections are checked several times)
GUI need to be tested(Its working fine)
LEM rack under construction in Accelerator Division.(Constructed and installed)
38
Basics
Basics OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
39
Optics Changed – August Current
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans
1 mm
-1 mm
-1 mm
1 mm
-1 mm
1 mm
-1 mm
1 mmX X´
Y Y´
40
Upcoming Fall Run Prediction
1 mm
-1 mm
-1 mm
1 mm
-1 mm
1 mm
-1 mm
1 mmX X´
Y Y´
41
OPTIM Simulation Hardware Issues Diagnostics Analysis Future Plans