Machine Signals
The following shall give an overview of the electronic interfaces at the machine to specific signals, e.g. for
data acquisition.
Timing system

All Events can be programmed through
ParamModi. This has several advantages: settings are logged in archiving 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.
Generally, the low-level timing settings in Genesys should
never be touched by users. If you think otherwise, please let us know!
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
- Injection Pulse
- Target on/off (gasjet, electron target, ... depends on experiment)
- Experiment DAQ on/off (flag for your DAQ when the Machine is in a process with measurement conditions)
- Experiment Drive in/out (Moving e.g. particle detectors, scrapers, ... in/out)
- Electron cooler beam is on/off
- Extraction Pulse
sddsc204

The timing receiver
Sddsc204 (replaces
Scuxl0319) is located in the electronics hutch of CRYRING (TH2.033). It is equipped with two five-channel timing receiver cards (tr0 and tr1) and can be programmed through Genesys. Outputs are Low-Voltage TTL (+3.3V) and are accessible on a nearby patch panel. The tentative channel assignment is given below.
Channel |
type |
Function |
tr0:1 |
Pulse (1μs) |
Ring injection (#283) |
tr0:2 |
Gate |
Enable Experiment DAQ (#528 -> #529) |
tr0:3 |
Gate |
Enable Detector (#530 -> #531) |
tr0:4 |
Gate |
Enable Target (#526 -> #527) |
tr0:5 |
Gate |
Enable E-beam (#522 -> #523) |
tr1:1 |
Pulse (1μs) |
Ring extraction kicker start (#1027) |
tr1:2 |
|
TBA |
tr1:3 |
|
TBA |
tr1:4 |
|
TBA |
tr1:5 |
|
TBA |
scuxl0006

A second timing receiver is
scuxl0006
and is located inside the HV cage of the
ElectronCooler and also running the Genesys class. There are only two channels available, the B1/B2 channels on the SCU card. Their assignment is as follows:
Channel |
Level |
Function |
B1 |
TTL |
Genesys: Hi-Level from CMD_EXP_DAQ_START CMD_EXP_DAQ_STOP |
B2 |
TTL |
Genesys: TBA |
See also
Timing System Event Numbers in the Wiki of the Timing group.
Programming timing receivers
Please first make sure that the events are actually being played by
WhiteRabbit: Open
ParamModi and see if they are enabled in the "Target Exp" tab. If they are enabled, please use Genesys for programming the Receivers (see also
Genesys UserManual.pdf and
Timing Wiki: Timing System Event Numbers)
Beam diagnostics

A patch panel at the top of rack EX3 in the electronics hutch (TH2.033) is interfacing with signals from the
BeamDiagnostics electronics room (connectors: BNC-50Ω) The assignment of the channels is semi-permanent and as follows:
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