CSEE Electronics

Electronics Radiation Tests with ProtonsCBM COSY Beam Test in June/July 2013

Overview Presentation

Sven LöchnerGSI Darmstadt

EE-MeetingJuly 29th, 2013

July 29th, 2013 EE-Meeting 2CSEE Electronics

Beam ParameterBeam Parameter• Location: FZ Jülich / COSY / JESSICA cave• Beam:

– ~ 2 GeV protons– between 1.5 and 3.0 · 108 protons per second– beam diameter ~1cm (~3mm sigma)– beam on target: 7s, spill repetition rate: 22 s

• Beam time:– 24. June to 4. July 2013– in reality, beam on target: 2.-4. July

• Participants: – IRI Frankfurt– GSI Darmstadt

• On-Site:– J. Frühauf, S. Löchner, S. Manz,

M. Witthaus

July 29th, 2013 EE-Meeting 3CSEE Electronics

Experimental Setup Experimental Setup -- OverviewOverview

Beam

GSI Darmstadt(CBM, CSEE)

IRI Frankfurt GSI Darmstadt(CSEE, LOBI)

July 29th, 2013 EE-Meeting 4CSEE Electronics

Experimental Setup Experimental Setup –– GSI 1GSI 1

Beam

IonisationChamber

PADI LTC3610 LTC 3605Power Regulator QFWGET4 µ-ctrl

July 29th, 2013 EE-Meeting 5CSEE Electronics

Experimental Setup Experimental Setup –– GSI 2GSI 2

Experimental Setup Control Devices (only for GSI)• 7 power supplies

– 11 channels– 9 channels remotely

controlled• 1 HV power supply

– 4 channels– voltage controlled

via Lemo cable• 3 PCs• 1 remote controlled

power outlet• 1 network switch

(20 channels)

July 29th, 2013 EE-Meeting 6CSEE Electronics

Experimental Setup Experimental Setup –– GSI 3aGSI 3a

Experimental Setup Ctrl.1. “Planned” Version

– Spartan FPGA– operates IC, pre-biasing– results to PC

2. Test of power regulators16 channel ADC

3. Status control of ASICs– GET4: 6 DLL ctrl. voltag.– PADI: 4 voltages

4. QFW (in beam) control5. µ-controllers monitoring

1.

2.

3.

4.

5.

July 29th, 2013 EE-Meeting 7CSEE Electronics

Experimental Setup Experimental Setup –– GSI 3bGSI 3b

Experimental Setup Ctrl.

Setup is locateddirect under theexperimental setup(cable length from0.5m to 1m)

SpartanFPGA

AdapterBoard

16 channelADC

QFW (for IC)

July 29th, 2013 EE-Meeting 8CSEE Electronics

ExperimentalExperimental Setup Setup –– ControlControlLabView ControlSetup

QFW control

DAC control

ADC results

Spill calculation

GET4 automatic error control

FPGA settings(PIC control, Beam

simulation, ...)

Histograms of different measurements

July 29th, 2013 EE-Meeting 9CSEE Electronics

Experimental Setup Experimental Setup –– GSI (LOBI)GSI (LOBI)

PGproto Testing Setup• SEM-Grid for beam profile measurements

– 2 x 31 channels– 2 HV planes– vertically displaceable

• PGproto readout system– 32 channels (8 QFW ASICs)– 1 FPGA logic unit

July 29th, 2013 EE-Meeting 10CSEE Electronics

Experimental Setup Experimental Setup –– IRIIRI

Test Setup from IRI• Hercules Rad-hard

µ-controller Board

• Syscore FPGA Boards– Programmed via

USB (~20m long cable to PC,located outside of cave)

Setup

July 29th, 2013 EE-Meeting 11CSEE Electronics

Passive Beam Diagnostic (I)Passive Beam Diagnostic (I)

Beam diagnostic via passive, self-developing film (GAFCHROMIC EBT)

• Sensitivity: 1cGy to 800cGyfrom calculation: 108 protons @ 2GeV deposit roughly 3cGy !!!

• Easy to mount, easy to check if DUT is “hit”

GET4 Setup PADI Setup

July 29th, 2013 EE-Meeting 12CSEE Electronics

Passive Beam Diagnostic (II)Passive Beam Diagnostic (II)

Further examples of film radiation:

Film of beam exit window Film at the end of our experimental setup

(3.66m after exit window film)

SEM-Grid

Ionisation Chamber

July 29th, 2013 EE-Meeting 13CSEE Electronics

Beam Diagnostic (I)Beam Diagnostic (I)

Ionizing Chamber(from GSI Detector-Lab Department)

• Biased with 1kV• Readout with QFW

ASIC

Typical COSY extraction beam profile in 2013

• 7s beam extraction• 15s break (for refill synchrotron)

0,0E+00

1,0E+07

2,0E+07

3,0E+07

4,0E+07

5,0E+07

6,0E+07

7,0E+07

0 2 4 6 8 10 12 14 16 18 20 22

Time (s)

Prot

ons

0,0E+00

5,0E+08

1,0E+09

1,5E+09

2,0E+09

2,5E+09

3,0E+09

0 2 4 6 8 10 12 14 16 18 20 22

Time (s)

Prot

ons

July 29th, 2013 EE-Meeting 14CSEE Electronics

Beam Diagnostic (II)Beam Diagnostic (II)Ionizing Chamber – Number of Protons per Event Number

0,0E+00

5,0E+08

1,0E+09

1,5E+09

2,0E+09

2,5E+09

3,0E+09

3,5E+09

4,0E+09

0 500 1000 1500 2000 2500 3000 3500 4000

Event Number

Pro

tons

per

spi

ll

1st night 2nd night

Beam interruption (safety reason or cave access)

July 29th, 2013 EE-Meeting 15CSEE Electronics

Beam Diagnostic (III) Beam Diagnostic (III) –– PGproto2PGproto2

SEM-Grid – x-Profile Overview

20 sTop view

July 29th, 2013 EE-Meeting 16CSEE Electronics

Beam Diagnostic (IV) Beam Diagnostic (IV) –– PGproto2PGproto2

SEM-Grid – x-Profile Overview

3D view from front

July 29th, 2013 EE-Meeting 17CSEE Electronics

Beam Diagnostic (V) Beam Diagnostic (V) –– PGproto2PGproto2

SEM-Grid – x-Profile Overview

3D view from side

July 29th, 2013 EE-Meeting 18CSEE Electronics

Beam Diagnostic (VI) Beam Diagnostic (VI) –– PGproto2PGproto2

SEM-Grid – x-Profile Overview

3D view from back

July 29th, 2013 EE-Meeting 19CSEE Electronics

First Results from CBM COSY 2013First Results from CBM COSY 2013

Finally 2 days with beam on target:• ≈ 3.88 · 1012 protons delivered from COSY• All diagnostic devices worked• GET4, PADI and QFW were located directly in beam

worked without any problems• Power regulator LTC 3610 survived without any obvious problems• Power regulator LTC 3605 “died” after nearly half of beam time

still looking for reason• Beam profile much better than in 2012• Measured first beam data with new PGproto2 system

More results and detailed analysis of data will upcoming in someweeks.

July 29th, 2013 EE-Meeting 20CSEE Electronics

Thanks to all...Thanks to all...