Machine Signals

The following shall give an overview of the electronic interfaces at the machine to specific signals, e.g. for data acquisition. All signals are arriving at the electronics hutch, TH2.033 at the top of the 19-in Rack EX2.

Timing system

Two interconnected NACON1 modules provide electronic signals for WhiteRabbit events. The events can be programmed through ParamModi.

Generally, the low-level timing settings in Genesys should never be touched by users. If you think otherwise, please let us discuss your scenario! Please keep in mind that you might not be the only consumer of the signals.

Programming events through ParamModi has significant advantages: settings are archived and can be reconstructed afterwards, when programming through ParamModi the user can remain agnostic of BPID-#, SID-# and other pattern-specific numbers that change from experiment to experiment.

Please select the Target Exp tab in ParamModi for your pattern and enable all start and stop events, that you need. Only if they are enabled, they will also be played by the WhiteRabbit system. There are events foreseen for

1. Injection Pulse
2. Target on/off (gasjet, electron target, ... depends on experiment)
3. Experiment DAQ on/off (flag for your DAQ when the Machine is in a process with measurement conditions)
4. Experiment Drive in/out (Moving e.g. particle detectors, scrapers, ... in/out)
5. Electron cooler beam is on/off
6. Extraction Pulse
7. TBA
8. TBA

Beam diagnostics

Two interconnected NIM modules type NACON1 provide access to all beam diagnostics singals from the machine, where they are available as ECL, NIM, or TTL pulse types.

1. horizontal IonizationProfileMonitor MCP count rate (IPM)
2. vertical IPM count rate
3. ParametricCurrentTransformer
4. IntegratingCurrentTransformer integral
5. BeamPositionMonitor integral
6. SchottkySpan0
7. CryRadio
8. RingRF

Please note that NIM signals use a current-based logic with negative pulse for "true" (at −16 mA into 50 ohms = −0.8 volts) and 0 mA for "false" (see also Nuclear Instrumentation Module.)

Detailed information on the beam diagnostics system can be found in the documents folder of CRYRING Sharepoint at Technical Documents and Literature/Diagnostics/ReferenceDocuments.

Experiment Signals

• PatchPanelBlack
• PatchPanelWhite

ElectronCooler

• Current: EcoolCurrentMeasurement
• Energy: ArnoldHV voltage divider, G35VoltageDivider, FC20VoltageDivider

Machine settings

• ParamModi