Beam Text May 17 2012

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Preparation

[Check List]

0. MATLAB emittance analysis: (working?) -- yes

1. Magnets: --Working

2. Camera: (a)--Working, (b)--shielding-good,(c) Sync? -- good

3. Flags: --Working

4. Farady Cup: hocked up? --yes

5. Blank off for camera on? --good

6. Gas bottle for valve full? --Yes

7. Gas bottle for flags full? --Yes

8. 3 Pickup Coils (Green Torroids): (1)@gun: hocked-up; (2)@accelerator exit: hocked-up to 2 red strip wire. Now connected to linac monitor panel which labeled as "J12 from back", "Scan field Mon" from front. (3)@end of beamline:

Start List

1) Valve exit of cavity opened?

2) Faraday cups are hocked up?

3) Target in?

4) Start the camera? Turn light on and off, observe if camera working. Load run script from "C:\Documents and Settings\sadiq\My Documents\26Apr2012\Camera_Settings".

Camera triggering issue

1. camera is triggered by something?

2. When camera trig is plugged into pulse generator, pulse generator set to trigger externally, but no external trigger connected to pulse generator, and Klystron HV is on, camera triggers.

3. Is camera being triggered by the noise created by the Klystron HV?

4. We have camera grounding issue.

can not bend the beam

Wrong polarity on the dipole. To switch the polarity on the dipole, we need turn on the power supply for the relays.

Energy Scan at 15 esh MeV

[Dipole Map]

1. Tuning

Energy Switch Out (High En Range)
Dipole Coil Current
e- Beam Energy () MeV (mapping )
Solenoid 1 12.9 A
Solenoid 2 13.7 A
Gun Hor 0.1 A
Gun Ver 0.2 A
Output Hor -0.4 A
Output Ver 0.0 A
Rep Rate 63
Gun HV 8.97(Knob Setting)
Gun Grid Voltage 10 (Knob Setting)
RF frequency 2856.291 MHz
Modulator HV Power Supply 4.84 (Knob Setting)
RF macro Pulse Length (FWHM) 200 ns
Q1 (A) 0
Q2 (A) 0
Q3 (A) 0
Q4 (A) 0
Q5 (A) 0
Q6 (A) 0
Peak Current on FC 1 (45 deg) 114 mAmps 400 px
Peak Current on FC 2 (45 deg) mAmps
Scope on FC 1 200 px
Scope on FC 2 200 px
Beam Spot

En Scan

Dipole    FC         En
Coil      Current
Current   Reading
(A)       (mA)      (MeV)
27        1.264     13.5305
28        1.596     13.9129
29        2.336     14.2850 
30        3.7       14.6469
30.5      4.18      14.8240
31        4.7       14.9985
31.5      7.26      15.1704
32        8.56      15.3398


Hrrl 17May2012 15MeV En Spread.png

Gaussian Fit for Electron Beam Energy:

Quad Scanning for Emittance

En Scan at 15.6004336 MeV. Q1 is on, All other quads are off. 88.8 mAmp Peak Current.

1) Scan from -10 Amps to 10 Amps

2) Increment at 0.4 Amps.

3) Name images by numbers start from 1. Then go on.

Like: -10 Amp is 1, -9.6 Amp is 2, and so on til 10 Amp is named 51.

4) Scan multipole (10) times from -10 to 10 Amps, and put them in different folders.

5) For each time, take back ground images. It should be done when RF is on and gun is off.

6) After the scan take a scope image for the current of the FC after the OTR screen.

Scan with Q1

After scan, put the files Run "Emit_Calc_N10toP10_Q1" under "C:\Documents and Settings\sadiq\My Documents\MATLAB\Emit_Calc\15MeV\Q1" directory.

Scan with Q6

After scan, put the files Run "Emit_Calc_N10toP10_Q6" under "C:\Documents and Settings\sadiq\My Documents\MATLAB\Emit_Calc\15MeV\Q1" directory.

Dipole Scanning for Energy Measurement

Energy Scan at Low Energy 8 MeV esh

1. Tuning

Energy switch is in, linac operates at low energy

Energy Switch In (Low En Range)
Dipole Coil Current
nominal e- Beam Energy () MeV (mapping )
Solenoid 1 12.1 A
Solenoid 2 9.6 A
Gun Hor + 0.3 A
Gun Ver 0 A
Output Hor + 0.6 A
Output Ver + 0.3 A
Rep Rate 63
Gun HV 8.99(Knob Setting)
Gun Grid Voltage 10 (Knob Setting)
RF frequency 2856.388 MHz
Modulator HV Power Supply 4.185 (Knob Setting)
RF macro Pulse Length (FWHM) 200 ns
Q1 (A) 0
Q2 (A) 0
Q3 (A) 0
Q4 (A) 0
Q5 (A) 0
Q6 (A) 0
Scope on FC 1 99.2 mA 200 px
Scope on FC 2 200 px
Beam Spot

Energy Scan

[Dipole Map]

Dipole    FC        En 
Coil      Current
Current   Reading
(A)       (mA)      (MeV)
12        1.712     6.5610
12.5      3.344     6.8305    
13        6.72      7.0975
13.5      9.44      7.3620
14        20        7.6238
14.5      33.12     7.8831
15        33.6      8.1399
15.3      28.64     8.2927
15.5      24.56     8.3940
15.7      20.88     8.4950
16        16.4      8.6456
16.2      12.48     8.7455
16.5      9.36      8.8946
16.7      6.48      8.9935
17        3.94      9.1411
17.3      1.968     9.2877
17.5      1.368     9.3849
17.8      0.936     9.5300
18        0.648     9.6262
19        0.332     10.1012
20        0.332     10.5658

Hrrl 17May2012 8MeV En Spread.png

Amplitude = 32.53163, mean = 8.06509, sigma = 0.49500 
Gaussian Fit for Electron Beam Energy: 
En = 32.53163exp(-(En-8.06509)^2) / (2*0.49500^2) 
Gaussian Energy peak = 8.06509 
Energy spread = 2.97002 
rms Energy spread = 0.49500 
Relative Energy spread = 0.36826 
Relative rms Energy spread = 0.06138

Quad Scanning for Emittance

En Scan at 15.6004336 MeV. Q1 is on, All other quads are off. 88.8 mAmp Peak Current.

1) Scan from -10 Amps to 10 Amps

2) Increment at 0.4 Amps.

3) Name images by numbers start from 1. Then go on.

Like: -10 Amp is 1, -9.6 Amp is 2, and so on til 10 Amp is named 51.

4) Scan multipole (10) times from -10 to 10 Amps, and put them in different folders.

5) For each time, take back ground images. It should be done when RF is on and gun is off.

6) After the scan take a scope image for the current of the FC after the OTR screen.


Dipole Scanning for Energy Measurement

Energy Scan at Low Energy 4 MeV esh

1. Tuning

Energy switch is in, linac operates at low energy

Energy Switch In (Low En Range)
Dipole Coil Current
nominal e- Beam Energy () 3 MeV (mapping )
Solenoid 1 7.0 A
Solenoid 2 4.1 A
Gun Hor 0.0 A
Gun Ver 0.0 A
Output Hor -0.1 A
Output Ver -0.1 A
Rep Rate 63
Gun HV 8.99(Knob Setting)
Gun Grid Voltage 10 (Knob Setting)
RF frequency 2856.284 MHz
Modulator HV Power Supply 3.85 (Knob Setting)
RF macro Pulse Length (FWHM) 200 ns
Q1 (A) 0
Q2 (A) 0
Q3 (A) 0
Q4 (A) 0
Q5 (A) 0
Q6 (A) 0
Scope on FC 1 34.2 mA 200 px
Scope on FC 2 200 px
Beam Spot 200 px

Energy Scan

[Dipole Map]

Dipole    FC        En
Coil      Current   
Current   Reading
(A)       (mA)      (MeV)
4         0.592      1.8985
4.5       0.86       2.2091
5         1.54       2.5172
5.5       2.4        2.8228
6         3.7        3.1257
6.5       4.82       3.4261
7         5.94       3.7240
7.5       6.54       4.0192
8         6.84       4.3119
8.5       6.1        4.6021
9         4.9        4.8896
9.5       2.76       5.1746
10        1.48       5.4570
10.5      0.296      5.7369

Hrrl 17May2012 3MeV En Spread.png

Amplitude = 6.86024, mean = 4.08829, sigma = 0.84597 
Gaussian Fit for Electron Beam Energy: 
En = 6.86024exp(-(En-4.08829)^2) / (2*0.84597^2) 
Gaussian Energy peak = 4.08829 
Energy spread = 5.07582 
rms Energy spread = 0.84597 
Relative Energy spread = 1.24155 
Relative rms Energy spread = 0.20693

Energy Scan at Low Energy 12 MeV esh

1. Tuning

Energy switch is out, linac operates at high energy range.

Energy Switch Out(High En Range)
Dipole Coil Current
nominal e- Beam Energy () 12 MeV (mapping )
Solenoid 1 6.9 A
Solenoid 2 5.2 A
Gun Hor 0.1 A
Gun Ver 0.0 A
Output Hor -0.2 A
Output Ver 0.5 A
Rep Rate 63
Gun HV 8.99(Knob Setting)
Gun Grid Voltage 10 (Knob Setting)
RF frequency 2856.262 MHz
Modulator HV Power Supply 4.24 (Knob Setting)
RF macro Pulse Length (FWHM) 200 ns
Q1 (A) 0
Q2 (A) 0
Q3 (A) 0
Q4 (A) 0
Q5 (A) 0
Q6 (A) 0
Scope on FC 1 67.2 mA 200 px
Scope on FC 2 200 px
Beam Spot

Energy Scan

[Dipole Map]

Dipole    FC        En
Coil      Current   
Current   Reading
(A)       (mA)      (MeV)
8         0.5       4.3119	0.40
9         0.6       4.8896	0.96
10        0.67      5.4570	0.20
11        0.716     6.0141	0.06
12        0.752     6.5610	0.08
13        0.828     7.0975	0.09
14        0.896     7.6238	0.05
15        1.112     8.1399	0.06
16        1.328     8.6456	0.08
17        1.624     9.1411	0.10
18        1.896     9.6262	0.10
19        2.448     10.1012	0.14
20        3.36      10.5658	0.21
21        4.82      11.0201	0.13
22        6.58      11.4642	0.33
22.2      7.88      11.5518	0.50
22.5      9.24      11.6824	0.58
22.7      10.0      11.7690	0.67
23        10.2      11.8980	0.59
23.1      11.2      11.9408	0.62
23.2      11.56     11.9836	0.68
23.3      13.04     12.0262	0.78
23.5      13.2      12.1111	0.90
23.8      13.04     12.2377	0.77
24        13.48     12.3216	0.84
24.2      12.36     12.4050	0.74
24.5      11.24     12.5295	0.74
24.7      10.2      12.6119	0.64
25        10.28     12.7348	0.77
25.1      8.6       12.7756	0.53
25.2      6.92      12.8162	0.38
25.5      6.2       12.9376	0.47
25.7      4.84      13.0180	0.25
26        3.64      13.1378	0.28
26.5      1.82      13.3354	0.13
27        1.28      13.5305	0.09
28        0.56      13.9129	0.04
29        0.364     14.2850	0.02
30        0.364     14.6469	0.02

Gaussian Fit

Hrrl 17May2012 12MeV En Spread.png

Amplitude = 12.67337, mean = 12.17422, sigma = 0.65747 
Gaussian Fit for Electron Beam Energy: 
En = 12.67337exp(-(En-12.17422)^2) / (2*0.65747^2) 
Gaussian Energy peak = 12.17422 
Energy spread = 3.94481 
rms Energy spread = 0.65747 
Relative Energy spread = 0.32403 
Relative rms Energy spread = 0.05401


2 Skewed Gaussian Fit

Hrrl 17May2012 12MeV En Spread2.png

Beam Distributions Beyond RMS: Media:Beam_Distributions_Beyond_RMS.pdf

Amplitude = 2.13894, mean = 12.07181, sigma_L = 4.46986, sigma_R = 1.20046

Sigma = 2.83516, Es = -0.57658

rms = 2.56472, skew = -0.94853


Amplitude2 = 10.88318, mean2 = 12.32332, sigma_L2 = 0.69709, sigma_R2 = 0.45170

Sigma2 = 0.57440, Es2 = -0.21360

rms2 = 0.56719, skew2 = -0.34231

Scripts

Asyymetric Gaussian Fit_overLinearFit

Media:En_Fit_Assym_Gau_over_liear.txt

Media:Assym_Gau_over_linear_devsum.txt

Asyymetric Gaussian Fit

Media:Assym_Gau_devsum.txt

Media:En_Fit_Assym_Gau.txt

Data from this fit

   4.0000    0.4189
   4.0100    0.4206
   4.0200    0.4223
   4.0300    0.4240
   4.0400    0.4257
   4.0500    0.4274
   4.0600    0.4291
   4.0700    0.4308
   4.0800    0.4326
   4.0900    0.4343
   4.1000    0.4360
   4.1100    0.4378
   4.1200    0.4395
   4.1300    0.4413
   4.1400    0.4430
   4.1500    0.4448
   4.1600    0.4465
   4.1700    0.4483
   4.1800    0.4501
   4.1900    0.4519
   4.2000    0.4537
   4.2100    0.4555
   4.2200    0.4572
   4.2300    0.4590
   4.2400    0.4608
   4.2500    0.4627
   4.2600    0.4645
   4.2700    0.4663
   4.2800    0.4681
   4.2900    0.4699
   4.3000    0.4718
   4.3100    0.4736
   4.3200    0.4755
   4.3300    0.4773
   4.3400    0.4792
   4.3500    0.4810
   4.3600    0.4829
   4.3700    0.4847
   4.3800    0.4866
   4.3900    0.4885
   4.4000    0.4904
   4.4100    0.4922
   4.4200    0.4941
   4.4300    0.4960
   4.4400    0.4979
   4.4500    0.4998
   4.4600    0.5017
   4.4700    0.5037
   4.4800    0.5056
   4.4900    0.5075
   4.5000    0.5094
   4.5100    0.5114
   4.5200    0.5133
   4.5300    0.5152
   4.5400    0.5172
   4.5500    0.5191
   4.5600    0.5211
   4.5700    0.5231
   4.5800    0.5250
   4.5900    0.5270
   4.6000    0.5290
   4.6100    0.5310
   4.6200    0.5329
   4.6300    0.5349
   4.6400    0.5369
   4.6500    0.5389
   4.6600    0.5409
   4.6700    0.5429
   4.6800    0.5450
   4.6900    0.5470
   4.7000    0.5490
   4.7100    0.5510
   4.7200    0.5531
   4.7300    0.5551
   4.7400    0.5571
   4.7500    0.5592
   4.7600    0.5612
   4.7700    0.5633
   4.7800    0.5654
   4.7900    0.5674
   4.8000    0.5695
   4.8100    0.5716
   4.8200    0.5736
   4.8300    0.5757
   4.8400    0.5778
   4.8500    0.5799
   4.8600    0.5820
   4.8700    0.5841
   4.8800    0.5862
   4.8900    0.5883
   4.9000    0.5904
   4.9100    0.5926
   4.9200    0.5947
   4.9300    0.5968
   4.9400    0.5990
   4.9500    0.6011
   4.9600    0.6032
   4.9700    0.6054
   4.9800    0.6076
   4.9900    0.6097
   5.0000    0.6119
   5.0100    0.6140
   5.0200    0.6162
   5.0300    0.6184
   5.0400    0.6206
   5.0500    0.6228
   5.0600    0.6250
   5.0700    0.6271
   5.0800    0.6293
   5.0900    0.6316
   5.1000    0.6338
   5.1100    0.6360
   5.1200    0.6382
   5.1300    0.6404
   5.1400    0.6426
   5.1500    0.6449
   5.1600    0.6471
   5.1700    0.6494
   5.1800    0.6516
   5.1900    0.6538
   5.2000    0.6561
   5.2100    0.6584
   5.2200    0.6606
   5.2300    0.6629
   5.2400    0.6652
   5.2500    0.6674
   5.2600    0.6697
   5.2700    0.6720
   5.2800    0.6743
   5.2900    0.6766
   5.3000    0.6789
   5.3100    0.6812
   5.3200    0.6835
   5.3300    0.6858
   5.3400    0.6881
   5.3500    0.6905
   5.3600    0.6928
   5.3700    0.6951
   5.3800    0.6974
   5.3900    0.6998
   5.4000    0.7021
   5.4100    0.7045
   5.4200    0.7068
   5.4300    0.7092
   5.4400    0.7115
   5.4500    0.7139
   5.4600    0.7163
   5.4700    0.7186
   5.4800    0.7210
   5.4900    0.7234
   5.5000    0.7258
   5.5100    0.7282
   5.5200    0.7306
   5.5300    0.7330
   5.5400    0.7354
   5.5500    0.7378
   5.5600    0.7402
   5.5700    0.7426
   5.5800    0.7450
   5.5900    0.7474
   5.6000    0.7499
   5.6100    0.7523
   5.6200    0.7547
   5.6300    0.7572
   5.6400    0.7596
   5.6500    0.7621
   5.6600    0.7645
   5.6700    0.7670
   5.6800    0.7694
   5.6900    0.7719
   5.7000    0.7744
   5.7100    0.7768
   5.7200    0.7793
   5.7300    0.7818
   5.7400    0.7843
   5.7500    0.7868
   5.7600    0.7892
   5.7700    0.7917
   5.7800    0.7942
   5.7900    0.7967
   5.8000    0.7992
   5.8100    0.8018
   5.8200    0.8043
   5.8300    0.8068
   5.8400    0.8093
   5.8500    0.8118
   5.8600    0.8144
   5.8700    0.8169
   5.8800    0.8194
   5.8900    0.8220
   5.9000    0.8245
   5.9100    0.8271
   5.9200    0.8296
   5.9300    0.8322
   5.9400    0.8347
   5.9500    0.8373
   5.9600    0.8399
   5.9700    0.8424
   5.9800    0.8450
   5.9900    0.8476
   6.0000    0.8502
   6.0100    0.8528
   6.0200    0.8554
   6.0300    0.8580
   6.0400    0.8605
   6.0500    0.8631
   6.0600    0.8658
   6.0700    0.8684
   6.0800    0.8710
   6.0900    0.8736
   6.1000    0.8762
   6.1100    0.8788
   6.1200    0.8814
   6.1300    0.8841
   6.1400    0.8867
   6.1500    0.8893
   6.1600    0.8920
   6.1700    0.8946
   6.1800    0.8973
   6.1900    0.8999
   6.2000    0.9026
   6.2100    0.9052
   6.2200    0.9079
   6.2300    0.9105
   6.2400    0.9132
   6.2500    0.9159
   6.2600    0.9185
   6.2700    0.9212
   6.2800    0.9239
   6.2900    0.9266
   6.3000    0.9292
   6.3100    0.9319
   6.3200    0.9346
   6.3300    0.9373
   6.3400    0.9400
   6.3500    0.9427
   6.3600    0.9454
   6.3700    0.9481
   6.3800    0.9508
   6.3900    0.9535
   6.4000    0.9562
   6.4100    0.9590
   6.4200    0.9617
   6.4300    0.9644
   6.4400    0.9671
   6.4500    0.9698
   6.4600    0.9726
   6.4700    0.9753
   6.4800    0.9780
   6.4900    0.9808
   6.5000    0.9835
   6.5100    0.9863
   6.5200    0.9890
   6.5300    0.9918
   6.5400    0.9945
   6.5500    0.9973
   6.5600    1.0000
   6.5700    1.0028
   6.5800    1.0056
   6.5900    1.0083
   6.6000    1.0111
   6.6100    1.0139
   6.6200    1.0166
   6.6300    1.0194
   6.6400    1.0222
   6.6500    1.0250
   6.6600    1.0277
   6.6700    1.0305
   6.6800    1.0333
   6.6900    1.0361
   6.7000    1.0389
   6.7100    1.0417
   6.7200    1.0445
   6.7300    1.0473
   6.7400    1.0501
   6.7500    1.0529
   6.7600    1.0557
   6.7700    1.0585
   6.7800    1.0613
   6.7900    1.0641
   6.8000    1.0669
   6.8100    1.0698
   6.8200    1.0726
   6.8300    1.0754
   6.8400    1.0782
   6.8500    1.0810
   6.8600    1.0839
   6.8700    1.0867
   6.8800    1.0895
   6.8900    1.0924
   6.9000    1.0952
   6.9100    1.0980
   6.9200    1.1009
   6.9300    1.1037
   6.9400    1.1066
   6.9500    1.1094
   6.9600    1.1122
   6.9700    1.1151
   6.9800    1.1179
   6.9900    1.1208
   7.0000    1.1236
   7.0100    1.1265
   7.0200    1.1293
   7.0300    1.1322
   7.0400    1.1351
   7.0500    1.1379
   7.0600    1.1408
   7.0700    1.1436
   7.0800    1.1465
   7.0900    1.1494
   7.1000    1.1522
   7.1100    1.1551
   7.1200    1.1580
   7.1300    1.1608
   7.1400    1.1637
   7.1500    1.1666
   7.1600    1.1695
   7.1700    1.1723
   7.1800    1.1752
   7.1900    1.1781
   7.2000    1.1810
   7.2100    1.1839
   7.2200    1.1867
   7.2300    1.1896
   7.2400    1.1925
   7.2500    1.1954
   7.2600    1.1983
   7.2700    1.2012
   7.2800    1.2040
   7.2900    1.2069
   7.3000    1.2098
   7.3100    1.2127
   7.3200    1.2156
   7.3300    1.2185
   7.3400    1.2214
   7.3500    1.2243
   7.3600    1.2272
   7.3700    1.2301
   7.3800    1.2330
   7.3900    1.2359
   7.4000    1.2388
   7.4100    1.2417
   7.4200    1.2446
   7.4300    1.2474
   7.4400    1.2503
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