CHIPS IAC Run 5-30-08

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Beam Tune

Device setting
RS1 -0
RS2 +0
FS1 -0
FS2 0.00
0Q1 -14.56
0Q2 +2.26
45Q1 -0.62
45Q2 0
L90Q1 0
L90Q2 0
Bend1 -1.11
Bend2 +9.94
Gun HV 3 kV
Grid 1.64
1202 15.7 kV
SOL1 0.00
SOL2 8.58

Setting Max rate

Run # MPA file name W Ta Description
65 NaI065.mpa IN In Dipole at 3 MeV (1.11 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 32[math]\pm[/math] 8 counts at 500 keV, Live=750 seconds, grid = 1.64, Gun = 3 kV.
66 NaI066.mpa IN In Dipole at 3 MeV (1.11 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 17[math]\pm[/math]5 counts at 500 keV, Live=610 seconds, grid = 4.0, Gun = 3 kV.
67 NaI067.mpa IN In Dipole at 3 MeV (1.11 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 64[math]\pm[/math] 9 counts at 500 keV, Live=619 seconds, grid = 1.0, Gun = 3 kV, peak sharpens., at 499 keV peak has 25 counts
68 NaI068.mpa IN In Dipole at 3 MeV (1.11 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. no peak at 500 keV, Live=600 seconds, grid = 0.5, Gun = 3 kV, peak sharpens.
69 NaI068.mpa IN In Dipole at 3 MeV (1.11 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 28[math]\pm[/math] 7 count (poor fit) , Live=652 seconds, grid = 1.5, Gun = 3 kV, peak sharpens.

Energy Scan

Use last dipole to sweep different electron energies.

Run # MPA file name W Ta Description
70 NaI070.mpa IN In Dipole at 3 MeV (1.11 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 61[math]\pm[/math] 9counts at 500 keV, Live=623 seconds, grid = 1.0, Gun = 3 kV.
72 NaI072.mpa IN Out Dipole at 3 MeV (1.11 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 51[math]\pm[/math]9 counts at 500 keV, Live= 629 seconds, grid = 1.0, Gun = 3 kV.
73 NaI073.mpa IN In Dipole at 2 MeV (0.78 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 54 [math]\pm[/math] 8 counts at 607 keV, Live= seconds, grid = 1.0, Gun = 3 kV.
74 NaI074.mpa IN Out RF re phasing was done, Dipole at 2 MeV (0.78 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 66[math]\pm[/math] 10 counts at 500 keV, Live=611 seconds, grid = 1.0, Gun = 3 kV.
75 NaI075.mpa IN In Dipole at 2 MeV (0.78 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 84[math]\pm[/math] 11 counts at 500 keV, Live=608 seconds, grid = 1.0, Gun = 3 kV.
76 NaI076.mpa IN Out Dipole at 2 MeV (0.78 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 78 [math]\pm[/math] 12 counts at 500 keV, Live=604 seconds, grid = 1.0, Gun = 3 kV.
77 NaI077.mpa IN In Dipole at 4 MeV ( 1.45 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 78 [math]\pm[/math] 11 counts at 500 keV, Live= 604 seconds, grid = 1.0, Gun = 3 kV.
78 NaI078.mpa IN Out Dipole at 4 MeV ( 1.45 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 59[math]\pm[/math] 15counts at 500 keV, Live=609 seconds, grid = 1.0, Gun = 3 kV.
79 NaI079.mpa IN Out Dipole at 1 MeV ( 0.47 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 56 [math]\pm[/math]8 counts at 500 keV, Live=607 seconds, grid = 1.0, Gun = 3 kV.
80 NaI080.mpa IN In Dipole at 1 MeV ( 0.47 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 61[math]\pm[/math] 9 counts at 500 keV, Live=614 seconds, grid = 1.0, Gun = 3 kV.
82 NaI082.mpa IN In Dipole at 5 MeV ( 1.76 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 70[math]\pm[/math] 10 counts at 500 keV, Live=607 seconds, grid = 1.0, Gun = 3 kV. NaI Spectrum was empty
83 NaI083.mpa IN Out Dipole at 5 MeV ( 1.76 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 76[math]\pm[/math] 10 counts at 500 keV, Live=603 seconds, grid = 1.0, Gun = 3 kV.

We believe the above data is mostly from gammas and not positrons. Recheck the tune. Redo scan

Run # MPA file name W Ta Description
85 NaI085.mpa IN In Dipole at 3 MeV (1.11 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 97[math]\pm[/math] 11counts at 500 keV, Live=605 seconds, grid = 1.0, Gun = 3 kV.
86 NaI086.mpa IN Out Dipole at 3 MeV (1.1 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 72[math]\pm[/math] 10counts at 500 keV, Live=604 seconds, grid = 1.0, Gun = 3 kV.
87 NaI087.mpa IN Out Dipole at 2 MeV (0.78 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 75[math]\pm[/math] 10counts at 500 keV, Live=603 seconds, grid = 1.0, Gun = 3 kV.
88 NaI088.mpa IN In Dipole at 2 MeV (0.78 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 76[math]\pm[/math] 10counts at 500 keV, Live=602 seconds, grid = 1.0, Gun = 3 kV.
89 NaI089.mpa IN In Dipole at 3.5 MeV (1.27 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 92[math]\pm[/math] 11counts at 500 keV, Live=606 seconds, grid = 1.0, Gun = 3 kV.
90 NaI090.mpa IN Out Dipole at 3.5 MeV (1.27 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 74[math]\pm[/math] 10counts at 500 keV, Live=602 seconds, grid = 1.0, Gun = 3 kV.
91 NaI091.mpa IN Out Dipole at 4.0 MeV (1.43 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 62[math]\pm[/math] 9counts at 500 keV, Live=604 seconds, grid = 1.0, Gun = 3 kV.
92 NaI092.mpa IN In Dipole at 4.0 MeV (1.43 on Pot), 300 Hz rep rate, (802 set to 15.7 kV. 71[math]\pm[/math] 10counts at 500 keV, Live=603 seconds, grid = 1.0, Gun = 3 kV.
93 NaI093.mpa IN In Dipole at 3.25 MeV (1.19 on Pot -- BM1: 5.7 A), 300 Hz rep rate, (802 set to 15.7 kV. 96[math]\pm[/math] 11counts at 500 keV, Live=604 seconds, grid = 1.0, Gun = 3 kV.
94 NaI094.mpa IN Out Dipole at 3.25 MeV (1.19 on Pot -- BM1: 5.7 A), 300 Hz rep rate, (802 set to 15.7 kV. 81[math]\pm[/math] 10counts at 500 keV, Live=603 seconds, grid = 1.0, Gun = 3 kV.
95 NaI095.mpa IN In Dipole at 2.75 MeV ( 1.03on Pot -- BM1: 5.0 A), 300 Hz rep rate, (802 set to 15.7 kV. 83[math]\pm[/math] 11counts at 500 keV, Live=603 seconds, grid = 1.0, Gun = 3 kV.
96 NaI096.mpa IN In Dipole at 3.25 MeV ( 1.19on Pot -- BM1: 5.7 A), 300 Hz rep rate, (802 set to 15.7 kV. 111[math]\pm[/math] 11counts at 500 keV, Live=620 seconds, grid = 1.0, Gun = 3 kV.

Quad tune

Let's see if the quads have any impact on the rate.

Run # MPA file name W Ta 45Q2 L90Q1 L90Q2 Description
97 NaI097.mpa IN In +1.37 0 0 Dipole at 3.25 MeV ( 1.19on Pot -- BM1: 5.7 A), 300 Hz rep rate, (802 set to 15.7 kV. 95 [math]\pm[/math] 11 counts at 500 keV, Live=655 seconds, grid = 1.0, Gun = 3 kV.
98 NaI098.mpa IN Out +1.37 0 0 Dipole at 3.25 MeV ( 1.19on Pot -- BM1: 5.7 A), 300 Hz rep rate, (802 set to 15.7 kV. 66[math]\pm[/math] 11 counts at 500 keV, Live=603 seconds, grid = 1.0, Gun = 3 kV.
99 NaI099.mpa IN Out -1.37 0 0 Dipole at 3.25 MeV ( 1.19on Pot -- BM1: 5.7 A), 300 Hz rep rate, (802 set to 15.7 kV. 71[math]\pm[/math] 10 counts at 500 keV, Live=603 seconds, grid = 1.0, Gun = 3 kV.
100 NaI100.mpa IN In -1.37 0 0 Dipole at 3.25 MeV ( 1.19on Pot -- BM1: 5.7 A), 300 Hz rep rate, (802 set to 15.7 kV. 87[math]\pm[/math]11 counts at 500 keV, Live=603 seconds, grid = 1.0, Gun = 3 kV.
102 NaI0102.mpa IN In 0 0 0 Dipole at 3.25 MeV ( 1.19on Pot -- BM1: 5.7 A), 300 Hz rep rate, (802 set to 15.7 kV. 95[math]\pm[/math]11 counts at 500 keV, Live=603 seconds, grid = 1.0, Gun = 3 kV.
103 NaI103.mpa IN In 0 -1.61 +1.57 Dipole at 3.25 MeV ( 1.19on Pot -- BM1: 5.7 A), 300 Hz rep rate, (802 set to 15.7 kV. 88[math]\pm[/math]11 counts at 500 keV, Live=603 seconds, grid = 1.0, Gun = 3 kV.

High Stats run

Accelerator parameters

Device setting
RS1 -0
RS2 +0
FS1 -0
FS2 0.00
0Q1 -14.56
0Q2 +2.26
45Q1 -0.8
45Q2 0
L90Q1 0
L90Q2 0
Bend1 -1.19
Bend2 +9.93
Gun HV 3 kV
Grid 1.04
1202 15.7 kV
SOL1 0.00
SOL2 8.58

Dipole at 3.25 MeV ( 1.19on Pot -- BM1: 5.7 A), 300 Hz rep rate, (802 set to 15.7 kV. seconds, grid = 1.0, Gun = 3 kV.


Run # MPA file name W Ta Description Histogram
104 NaI104.mpa IN In 11[math]\pm[/math] 6 counts at 500 keV, Live=602, 1.5 kG sweep magnet around beam pip after last dipole
105 NaI105.mpa IN In 190 [math]\pm[/math] 15 counts at 500 keV, Live=601
106 NaI106.mpa IN Out 42 [math]\pm[/math] 9 counts at 500 keV, Live=357
107 NaI107.mpa IN In 293[math]\pm[/math] 19counts at 500 keV, Live=2001 sec => 600300 beam pulses => 293 photon/.0024 Coul =>122,000 photons/Coul CHIPS HpGe-NaI r107.gif
108 NaI108.mpa IN In Last Dipole set to 20 MeV (6.62 on pot), 23 [math]\pm[/math] 6 counts at 500 keV, Live=603 => 32,000 photons/Coul CHIPS HpGe-NaI r108.gif


40 mA peak and 100 ns wide pulses =>

Calibration

Previous calibration has

E(HpGe) = -22.1 + 0.67 * ADC_Value

E(NaI) = -44.1 + 0.92* ADC_Value

Na-22

Measure HpGe spectrum with Na-22 source and RF on.


Run # MPA file name W Ta Description
109 NaI109.mpa IN In RF is on but no electrons, gun pulser unplugged, source was put inside lead doughnut collimator such that we get 2 peaks
110 NaI110.mpa IN In RF is OFF , Na-22 in place, free running ADC gate
111 NaI111.mpa IN In RF is OFF , Na-22 in place, free running ADC gate
112 NaI112.mpa IN In RF is OFF , Na-22 is OUT , free running ADC gate
113 NaI113.mpa IN In RF is OFF , Na-22 is back in, free running ADC gate, Tony installs source in front lead brick collimator for a single peak (put source outside collimator)


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