LPNHETCTSetup

Particulars Setup

• Homepage of Particulars: http://www.particulars.si
• Additional informations / manuals / software can be accessed via this homepage
• Installation Manual: ScanTCT_Install.pdf

Peltier

• max. 15.4 V and 8.5 A
• Mounting plane attached to Peltier element
• User guides:
  • Pt100_connection.pdf: Pt100 connection
  • Particulars-MountingPlane.pdf: Dimensioned drawing of mounting plane (Particulars)

Laser

• optics system preinstalled: iris, lens, beam expander, collimator, fibre connector
• focal distance of optics system: 8.4 - 8.5 cm
• short pulses (350 - 400 ps) with pulse energy corresponding to ~ 1000 MIP
• LA-01 IR; 1060 nm, 100mW
• pulse width: 100% = threshold at the output stage is at the limit of operation
  • 100% narrowest possible pulse (also low intensity) (3.3V from DAC)
  • 10% very wide and intense pulse
• User guides
  • ParticularsLaserControl-UserGuide.pdf: Laser Control User Guide
  • ParticularsLaserHardware-UserGuideV2.0.pdf: Laser Hardware User Guide
  • Particulars-Procedures-FocusFind.pdf: Procedures Focus Find
  • Particulars-Procedures-LaserPulse.pdf: Procedures Laser Pulse

Bias-T (BT-01)

• max applied voltage: 1-2 kV
• leakage: <500 nA @ 1 kV
• frequency range: lower end <100 kHz; hi end >2000 mHz
• input/output impedance: ~50 ohm / ~50 ohm
• Manuals and specs
  • Bias-T_Specs.pdf: BiasT specs
  • ParticularsBias-T-Manuals.pdf: BiasT manual
• Connections:
  • DC: bias input (from power supply)
  • RF: signal output (to amplifier)
  • DC+RF: bias output + signal input, to diode

Notes:

• in case of a structure with a bias ring and signals/strips being read out, one needs a different connection scheme. Using the mount bought from DESY, one should not use the bias T; instead, one should send directly the bias to from the power supply to the bias ring, and the RF signal from the strip/pixel to the amplifier.
• using longer cable prevents (i.e. moves out of the region of interest) distortion of the measured pulse due to reflection

Amplifier (AM-01 A)

• bias voltage: 6-15 V. Gain almost constant above 12V. At 6V gain is about 0.15 of the gain at or above 12V
• amplification: 53dB (there exists another model with an amplification of 35dB but we don't have it)
• frequency range: 0.01 - 2000 MHz
• input/output impedance: ~50 ohm / ~50 ohm
• amplifier_Specs.pdf: Amplifier specs
• ParticularAmps-Manuals.pdf: Amplifier manual

Motion Stage

• X, Y, Z stage with range from 0 to 52000 um
• Controller: Standa 8SMC1-USBhF 1.5A Microstep Driver with USB Interface http://www.standa.lt/products/catalog/motorised_positioners?item=175

Additional Equipment

PC

• Windows PC:

• Quote with full PC specs
• installed LabView 10 runtime from Standa installation CD (comes with SMCView). If full LabView needed, download from CC-IN2P3
• installed Microsoft Visual C++ VS express community 2015

Oscilloscope

DRS evaluation board

• recommended: 4 channel, 1GHz, 5 GS/s digitization board from PSI (http://www.psi.ch/drs/evaluation-board)
  • Four 50-Ohm terminated input channels with SMA connectors.
  • Active input buffers which result in an analog bandwidth of 700 MHz (-3dB).
  • High bandwidth analog switches for internal voltage calibration.
  • Precision clock for internal timing calibration, reaching a precision of a few pico seconds.
  • One DRS4 chip, capable of sampling the four input signals simultaneously from 0.7 GSPS to 5 GSPS with 1024 sampling points each.
  • One AD9245 ADC to digitize signals from the DRS4 chip.
  • One Xilinx Spartan 3 FPGA for readout control.
  • A 16-bit DAC to generate all on-board control voltages.
  • A serial EEPROM containing serial number and calibration information.
  • Internal trigger with user-defined thresholds on any of the four channes.
  • Triggering on combinations of the four channels (AND/OR) for coincidence measurements.
  • An external trigger input (TTL input 50 Ohm terminated) with a MCX connector.
  • Clock input and output connectors (MCX) for synchronizing several evaluation boards.
  • A USB 2.0 interface for data readout. This interface also powers this board. The maximum readout rate is about 500 events per second.
  • Several headers for debugging of all important control signals with an oscilloscipe or logic analyzer.
  • DRS4_manual_rev50.pdf: Evaluation Board Manual
  • DRS4_rev09.pdf: DRS4 chip specifications

• from manual:
  • sampling speed up to 5 GSPS and 1024 sampling points
  • SMA connectors for 4 input channels, MCX connectors for triggering and clokc synchronization, powered through USB
  • inputs AC coupled and input range of 1V peak-to-peak
  • maximum allowed input voltage:
    • DC: +- 10 V
    • Long pulse (<2us): +- 20 V
    • Short pulse (<200ns): +- 30 V
  • USB 2.0 bus allows data transfer rates of more than 20 MB/sec

Amplifier Power

• TTi PL310
  • 32V - 1A PSU

High Voltage

• Keithley 2410 1100V SourceMeter
  • bias up to 1.1 kV
  • DC current measurements
• Keithley 6517B ElectroMeter
  • DC voltage measurements from 1μV to 210V
  • DC current measurements from 10aA to 21mA
  • Built-in V-Source. The 100V range provides up to ±100V at 10mA, while the 1000V range provides up to ±1000V at 1mA.
  • CHECK CONNECTIONS WITH LUCIANO
• GPIB to USB converter (KEYSIGHT TECHNOLOGIES 82357B)

Peltier Power

• EA Power supply EA-PS-2042-10B
  • 160W 1 Output Digital Bench Power Supply, 0 to 42V, 0 to 10A

Peltier controller

PCB

Required equipment

Chiller

• should be USB controllable
• -40C ... ~+40C
• Julabo XXX

• pipes and connectors

Cold Block

• PT1000 temperature sensor and connector

Nylon screw for cold block connection better than metal screw; use Screw Insulator to isolate screw from aluminium (necessary for metal screw).

Cables / Connectors

• SMA cables and connectors

• other:

Sensor polishing

• 2 bars to hold sensor during polishing process (CERN: teflon); bar width: 2 cm to clamp sensors which are larger than 1 cm. Use old silicon as distance holder (glued with Kapton inbetween bars).
• cotton bud (for polishing)

Additional Resources

Workshops:

https://indico.desy.de/conferenceDisplay.py?confId=12934

To-do

• replace keithley 2410 with 6517B
• analysis for detector alignment
• buy PCB from DESY
• complete chiller setup
• edge-TCT
• electric field
• mobility

-- GiovanniMarchiori - 2015-10-20