Proton Calorimetry/Equipment

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This page contains information on the various pieces of experimental equipment that form the Proton Calorimetry detector setup.

Caen Detector Emulator

The Caen DT5800D Detector Emulator provides the capability for emulating the output of an arbitrary detector system.

More details can be found on the Caen Detector Emulator page.

Nikon D70 DSLR

A Nikon D70 DSLR was borrowed from Adam Gibson in Medical Physics to allow remote acquisition of scintillator images.

More details can be found on the Nikon D70 DSLR page.

Remote Desktop Access

Long BNC signal cables have been shown to have an impact on the signal recorded. In order to avoid this problem a network allowing remote access to the DAQ laptop (used to control the High Voltage (HV) and the digitiser) and the oscilloscope has been set up using two Linksys AC1900 dual band routers. The routers are labelled "Experimental Room" (Linksys 14941) and "Control Room" (Linksys 14483).

The DAQ laptop (hep-pool-12) and the LeCroy oscilloscope can be controlled via Windows Remote Desktop. Make sure the DAQ laptop and the oscilloscope have remote control access enabled (Settings: Remote control). The controlling computer needs Windows Remote Desktop installed. There can be more than one controlling computer in order to have the HV and scope displayed on different screens for easy monitoring and access. In order to remotely control the DAQ laptop, follow these steps:

  • Turn on and log into (important particularly for the oscilloscope which won't allow a remote connection before a first login) the DAQ laptop, the oscilloscope and the controlling computers.
  • Connect all relevant cables, using the normal ethernet ports on the routers (not the WAN port):
    • Oscilloscope -> Experimental Room router (via 5 m ethernet cable)
    • DAQ laptop -> Experimental Room router (via 5 m ethernet cable)
    • Experimental Room router -> Control Room router (via long flat ethernet cable)
    • Controlling computer 1 ->Control Room router (via 5 m ethernet cable)
    • Controlling computer 2 ->Control Room router (via 5 m ethernet cable)
  • Check that the DAQ laptop is connected to the router: Control Panel: View Network Status and Tasks
  • Open Microsoft Remote Desktop on your computer and start a session (either new or existing). Fill in the following details:
    • Connection name: something relevant to the DAQ laptop or the oscilloscope, but can be anything you choose
    • PC name:The IP address of the DAQ laptop and the oscilloscope. These have both been set to have static IP addresses:
      • DAQ laptop IP address: 192.168.1.201
      • Oscilloscope IP address: 192.168.1.202

Note that if it is necessary to check the IP addresses (for example, if adding anything else onto the network), then:

  • On the DAQ laptop:
    • Navigate to: Control Panel -> Network and Internet -> Network and Sharing Center
    • Right click on "Local Area Connection" of the router
    • Select "Properties"
    • Select "Details": IP address is here
  • Or find IP address by accessing the router:
    • Go to 192.168.1.1 in a browser
    • The password to access the router is: admin
    • Navigate to "devices", which displays everything connected to the network with its IP address
  • Start the connection by either selecting the relevant session and clicking "start" or double clicking the relevant session.
    • Gateway: select "No gateway configured"
    • User name:
      • DAQ laptop: hep
      • Oscilloscope: LeCroyUser
    • Password: the DAQ laptop and oscilloscope passwords
    • Resolution: select "Native"
    • Colors: select "High Color (16 bit)"
    • Full screen mode: select "OS X native"
  • Common troubleshoot: If your computer doesn't connect, try a different port for the ethernet cable or turn WIFI off and back on again


In order to access a shared folder on the DAQ laptop (currently shared folder is PBTData):

  • On a mac, go to: Finder
  • Go (across the top menu)
  • Connect to Server: Select: smb://HEP-POOL-12/
  • Connect

Connecting HV to DAQ Laptop

  • The DAQ Laptop (hep-pool-12) is required to run the HV software GECO, with the necessary drivers installed.
  • Turn the laptop on.
  • Connect the HV using either the grey or black USB cable (both have been tested and work) to the middle USB port on the left of the DAQ laptop.
  • Turn on the HV unit.
  • On the DAQ laptop, go to:
    • Control Panel -> Hardware and Sound -> View devices and printers

to check the COM Port address of the HV unit (displayed as an unidentified device).

  • On the DAQ laptop open the "GECO" software.
  • Update the COM Port address if need be and connect.

LeCroy Scope Trace Conversion: Binary to ASCII

To convert .trc binary data to .txt data that is formatted similarly to the output files from a CAEN DT5751 digitiser:

  1. Copy contents of /unix/pbt/aknoetze/ConversionScripts to a new directory.
  2. Open trc2txt.py in a text editor.
    1. Change path to directory containing .trc data files by editing variable dirpath
    2. Change number of decimal points for each column by editing: np.savetxt(..., fmt=‘...’,...)
  3. Run trc2txt.py

Converted .txt files will be in the copied directory NEWASCII. These new files will possess the same file names as the original .txt files.

To concatenate the new data files together into one single file, while in the directory NEWASCII,type: 

cat *.txt > OutputFileName.txt


Working with LeCroy Scope Trace Files in ROOT using the LeCroyData Class

The LeCroyData class is defined in SimpleLeCroyRoutines.C, which can be found at /unix/pbt/users/dwalker/LeCroy. The class is intended for use in interactive ROOT sessions, but can be used in compiled ROOT applets. Its public methods and their use are summarised below:

Method Signature Notes Example
LeCroyData::LeCroyData(std::string fileName); Constructor for the LeCroyData class. The string fileName must be a fully qualified path from the current working directory to the LeCroy binary format file to be loaded.

//Instantiating a new LeCroyData object

LeCroyData* lcd = new LeCroyData("../data/aug16/lecroy/C1Trace00000.trc");

int LeCroyData::getAcqCount(); Returns the number of acquisitions recorded in the file.

//Printing every trigger time in a LeCroy binary file

LeCroyData lcd("C1Trace00037.trc");

int n = lcd.getAcqCount();

for(int i = 0; i<n; i++){

std::cout.flush()<<lcd.getTriggerArray()[i]<<std::endl;

}

double* LeCroyData::getTriggerArray(); Returns a C-style array containing the time in ns at which each acquisition in the file was triggered, relative to the first trigger.
double* LeCroyData::getOffsetArray(); Returns a C-style array containing the time in ns between the start of each acquisition and the time of the trigger for that acquisition.
int LeCroyData::getPointsPerAcq(); Returns the number of data points (voltage / time pairs) recorded in each acquisition in the file.

//Plotting a single acquisition using ROOT's TGraph class

LeCroyData lcd("C1Trace00000.trc");

int acquisitionNumber = 0;

double* x = lcd.getAcqTime(acquisitionNumber);

double* y = lcd.getAcqWave(acquisitionNumber);

int n = lcd.getPointsPerAcq();

TGraph* gr = new TGraph(n, x, y);

gr->Draw();

double* LeCroyData::getAcqWave(int segment); Returns a C-style array of doubles. The array contains the voltages recorded by the scope in an acquisition with index "segment", which runs from zero to the number of acquisitions in the file.
double* LeCroyData::getAcqTime(int segment); Returns a C-style array of doubles. The array contains the time in ns of each data point in the acquisition indexed by "segment", relative to the trigger for that acquisition.
string LeCroyData::getTimestamp(); Returns a string describing the timestamp for the file as a date and a clock time. This time corresponds to the first trigger in the file and takes the format "d/m/yyyy @ hh:mm:ss.ssss".
double* LeCroyData::getSpectrum(); Returns a C-style array of doubles, where each entry is the ADC Counts calculated for an event.

//Create and display a histogram of the ADC Counts of pulses in a file

LeCroyData* lcd = new LeCroyData("C1Trace00000.trc");

TH1D* hist = new TH1D("hist", "LeCroyData Spectrum;ADC Counts;Number of Events", 350, 0, -1);

int n = lcd->getSpectrumSize();

double* s = lcd->getSpectrum();

for(int i = 0; i<n; i++){ hist->Fill(s[i]); }

hist->Draw();

double* LeCroyData::getSpectrumSize(); Returns the number of entries in LeCroyData::getSpectrum() (equal to the number of entries in LeCroyData::getSpectrumTime()) as an integer.
double* LeCroyData::getSpectrumTime(); Returns a C-style array of doubles, where each entry is the time in ns at which an event recorded in the spectrum occurred, with respect to the first trigger time in the file.


Additional methods are being added to handle the generation of spectra and improve access to timing data.

Manuals

Manuals for relevant detector hardware.

WaveCatcher

WaveCatcherFamily_V1.2.pdf
Full description of the WaveCatcher Family hardware with paths to Control & Readout software and libraries. Covers the 2-channel and 8-channel WaveCatcher modules, the 16-Channel WaveCatcher board and module, and all the options of the 64-Channel WaveCatcher Crate (16, 32, 48 or 64 channels).
WaveCatcher64Ch_Library_1.1.16.pdf
Users manual for WaveCatcher64Ch Control and Readout Library
WaveCatcherSoftware_V1.1.pdf
User manual for the WaveCatcher Family Control & Readout software (Windows Only, includes scope-like GUI).

Caen

DT5751 Product Page
Caen product page for DT5751 2-4 Channel 10 bit 2/1 GS/s Digitizer.
DT5751 User Manual
User manual for DT5751 2-4 Channel 10 bit 2/1 GS/s Digitizer.
DT5740 Product Page
Caen product page for DT5740 16/32-Channel 12 bit 62.5MS/s Digitizer supporting DPP-QDC firmware.
DT5740 User Manual
User manual for the DT5740 Desktop 16/32-channel Desktop Digitizer, that also functions in QDC charge integration mode with the DPP-QDC firmware.
UM4874_DPP-QDC_UserManual
User manual for the Digital Pulse Processing for Charge to Digital Converter DPP-QDC implemented exclusively for the "D" model of the 740 Digitizer series (740D).
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