beam secondary shower acquisition system: bws pcvd measurements on sps ba5 bws51731 be-bi-bl jose...
DESCRIPTION
1. Preparing the pCVD Amplifier 1.1 Transimpedance amplifier configuration Something extremely simple (J. Koopman 08/10/2007 EDA-01716) 1x THS3001 1x Resistor 1 K ohm 2x Resistor 51 ohm BE-BI-BL Jose Luis Sirvent Blasco 3 2 x Decoupling Caps 100nF 2 x Decoupling Caps 6.8uF 2 x SMA Connectors (IN/OUT) 2 x LEMO Connectors (Power +/- 12V) I in V out Vout = Rf * Iin V out (50 ohms Load) = (1K * I in) / 2TRANSCRIPT
BE-BI-BL Jose Luis Sirvent Blasco ([email protected])
2
Beam Secondary Shower Acquisition System: BWS pCVD Measurements on SPS BA5 BWS51731
Jose Luis Sirvent BlascoPhD. Student
Student Meeting22/06/2015
BE-BI-BL Jose Luis Sirvent Blasco ([email protected])
3
1. Preparing the pCVD Amplifier1.1 Transimpedance amplifier configuration
• Something extremely simple (J. Koopman 08/10/2007 EDA-01716)• 1x THS3001• 1x Resistor 1 K ohm • 2x Resistor 51 ohm
• 2 x Decoupling Caps 100nF• 2 x Decoupling Caps 6.8uF • 2 x SMA Connectors (IN/OUT)• 2 x LEMO Connectors (Power +/- 12V)
I in V out
Vout = Rf * Iin
V out (50 ohms Load) = (1K * I in) / 2
BE-BI-BL Jose Luis Sirvent Blasco ([email protected])
4
1. Preparing the pCVD Amplifier1.2 Testing before installation
20 ns
350 mV
• Using a Photodiode to emulate the Diamond Detector:• Aim: Testing the timing behaviour• Same electric model (but different values)• Similar response (light charged particles)• Laser driver circuit built
• Modulation with pulse source (3ns pulses)• Laser direct modulation
• SMF 9/125 um connection
BE-BI-BL Jose Luis Sirvent Blasco ([email protected])
5
1. Preparing the pCVD Amplifier1.2 Testing before installation
20 ns
350 mV
• Using a Photodiode to emulate the Diamond Detector:• Aim: Testing the timing behaviour• Same electric model (but different values)• Similar response (light charged particles)• Laser driver circuit built
• Modulation with pulse source (3ns pulses)• Laser direct modulation
• SMF 9/125 um connection
BE-BI-BL Jose Luis Sirvent Blasco ([email protected])
6
1. Preparing the pCVD Amplifier1.3 Same Set-up but with CIVIDEC 20dB amplifier (just for curiosity)
Faster (obviously)Ringing observed
BE-BI-BL Jose Luis Sirvent Blasco ([email protected])
7
1. Preparing the pCVD Amplifier1.4 Testing before installation (now with radiation, Alpha)
CIVIDEC 40dB Amplifier Transimpedance EDA-01716
4.5 mV
~ 13ns
4 mV
~ 13ns
40 mV
40 mV
~ 7ns
~ 7ns
pCVD HV = 700V
pCVD HV = 700VpCVD HV = -700V
pCVD HV = -700V
Thanks to Marcin collaboration!
BE-BI-BL Jose Luis Sirvent Blasco ([email protected])
8
• Connections:• 3501876A HV• 3501873A +12V• 3501872A -12V• 3501868A Signal
Cable Distance: 80m up to measurement point
2. Measurements on SPS BA52.1 Testing profiles on BWS51730 (Set-up)
BWS51730 H&V pCVD + AmplifScintillator + PMT + Amplif
~ 1.6m
On Surface…
Synch (Turn + Bunch Clk)
BE-BI-BL Jose Luis Sirvent Blasco ([email protected])
9
2. Measurements on SPS BA52.1 Testing profiles on BWS51730 (Single Loss, no Scan done)
-2 -1 0 1 2 3 4 5 6 7
x 10-8
-1
0
1
2
3
4
5
x 10-3
Time (s)
Am
plitu
de (v
)
pCVD Diamond Detector Measurement Campaign (18/06/2015)
pCVD Diamond Detector SignalBunch Clock (40MHz)
-2 -1 0 1 2 3 4 5 6 7
x 10-8
0
5
10
15x 10
-3
Time (s)
Am
plitu
de (v
)
pCVD Diamond Detector Measurement Campaign (18/06/2015)
pCVD Diamond Detector SignalBunch Clock (40MHz)
BE-BI-BL Jose Luis Sirvent Blasco ([email protected])
10
2. Measurements on SPS BA52.1 Testing profiles on BWS51730 (Speed: 1 ms-1, Beam : 1e10 ppb, pCVD HV= - 700V)
-0.5 0 0.5 1 1.5 2 2.5 3 3.5 4
x 10-3
0
0.05
0.1
0.15
0.2
0.25
Time (s)
Am
plitu
de (v
)
pCVD Diamond Detector Measurement Campaign (18/06/2015)
pCVD Diamond Detector Signal
-0.5 0 0.5 1 1.5 2 2.5 3 3.5 4
x 10-3
0
0.05
0.1
0.15
0.2
0.25
0.3
Time (s)
Am
plitu
de (v
)
pCVD Diamond Detector Measurement Campaign (18/06/2015)
pCVD Diamond Detector Signal
Just showing RAW DATA analysis needed!!
BE-BI-BL Jose Luis Sirvent Blasco ([email protected])
11
-0.5 0 0.5 1 1.5 2 2.5 3 3.5 4
x 10-3
-0.25
-0.2
-0.15
-0.1
-0.05
0
0.05
Time (s)
Am
plitu
de (v
)
pCVD Diamond Detector Measurement Campaign (18/06/2015)
pCVD Diamond Detector Signal
2. Measurements on SPS BA52.1 Testing profiles on BWS51730 (Speed: 1 ms-1, Beam : 1e10 ppb, pCVD HV= + 700V)
Just showing RAW DATA analysis needed!!
-0.5 0 0.5 1 1.5 2 2.5 3 3.5 4
x 10-3
-0.25
-0.2
-0.15
-0.1
-0.05
0
0.05
Time (s)
Am
plitu
de (v
)
pCVD Diamond Detector Measurement Campaign (18/06/2015)
pCVD Diamond Detector Signal
Wider??
BE-BI-BL Jose Luis Sirvent Blasco ([email protected])
12
-0.5 0 0.5 1 1.5 2 2.5 3 3.5 4
x 10-3
-0.25
-0.2
-0.15
-0.1
-0.05
0
0.05
Time (s)
Am
plitu
de (v
)
pCVD Diamond Detector Measurement Campaign (18/06/2015)
pCVD Diamond Detector Signal
2. Measurements on SPS BA52.1 Testing profiles on BWS51730 (Speed: 1 ms-1, Beam : 1e10 ppb, pCVD HV= + 500V)
Just showing RAW DATA analysis needed!!
Wider??
-0.5 0 0.5 1 1.5 2 2.5 3 3.5 4
x 10-3
-0.25
-0.2
-0.15
-0.1
-0.05
0
0.05
Time (s)
Am
plitu
de (v
)
pCVD Diamond Detector Measurement Campaign (18/06/2015)
pCVD Diamond Detector Signal
BE-BI-BL Jose Luis Sirvent Blasco ([email protected])
13
-0.5 0 0.5 1 1.5 2 2.5 3 3.5 4
x 10-3
-0.25
-0.2
-0.15
-0.1
-0.05
0
0.05
Time (s)
Am
plitu
de (v
)
pCVD Diamond Detector Measurement Campaign (18/06/2015)
pCVD Diamond Detector Signal
2. Measurements on SPS BA52.1 Testing profiles on BWS51730 (Speed: 1 ms-1, Beam : 1e10 ppb, pCVD HV= + 300V)
Just showing RAW DATA analysis needed!!
Wider??
-0.5 0 0.5 1 1.5 2 2.5 3 3.5 4
x 10-3
-0.25
-0.2
-0.15
-0.1
-0.05
0
0.05
Time (s)
Am
plitu
de (v
)
pCVD Diamond Detector Measurement Campaign (18/06/2015)
pCVD Diamond Detector Signal
BE-BI-BL Jose Luis Sirvent Blasco ([email protected])
14
3. Issues and To-do list• 1. Scans data from BWS51730 not stored on DB
• Need to repeat measurements for comparison • 2. Noise studies (FFT, distribution, stdev…)
• Check correlation with Cable measurement campaign (all systems were off)• 3. Profile analysis and processing (To-do)
• Base-Line removal• Integrals by software every 25ns (using Bunch CLK)• Voltage on 50ohm Charge value• Select only one bunch• Gaussian fit on profiles considering 1ms-1 (Beam sigma comparison)• Study non-uniformity of Gaussian profile (Scint + PMT looks “more Gaussian”)
• Betatron oscillations??• Effect of random particle shower?? • Wire vibration??• Noise on HV??• Longer pulse??• …• Theories are welcome!! Thanks to Emiliano’s help!
