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This key contains the timing status 

Source

General Timing WindowWindowKeys

Keys

Key nameSource

Write freq. [Hz]

Data size [byte]

Throughput
[kbyte/s]

FomatNotes
DAFNESTATE_JDAT

General Timing Window: it fetches from the DEVIL387 the GTIMDyn global and combines some of its data with information obtained from the Timing Status Word register. The result (GTIMStatusData) is translated as a Json document and written to Memcached.



~0~512~0

The Json key is worked out by the SubVI (inserted in the General Timing Window):


/u2/dcs/source_solaris/0_classes/TIM/console/timing_2/TimingStatusDecode.vi

The key is updated any time a user sets some parameter from the General Timing Window. The key content is a Json document with the following format.
{
  "bunch_seq_1_32":0,
  "bunch_seq_33_64":0,
  "bunch_seq_65_96":0,
  "bunch_seq_97_120":0,
  "accumulator_pulses":0,
  "linac_freq":0,
  "extraction_freq":0.0,
  "equidistant":0,
  "mode":0,
  "execution":0,
  "standby_state":0,
  "run":0
}

Values for the various fiedls are as consistent as possible with the "Timing Status Word" corresponding bitfields. In some cases the representation is modified in order to make it more intuitive (e.g. mode: -1=electrons, 1=positrons) or even directly usable (e.g. linac_freq: 25, 50 [Hz]). In other cases (execution, stand_by_state) the value is equal to the corresponding bitfield.

linac_freq: 25, 50 [Hz]
extraction_freq: 0.2, 0.5, 1.0, 2.0 [Hz]
equidistant: 0=contiguous, 1=equidistant
mode: -1=electrons, 1=positrons
execution: 1, 2, 4, 8, 16 (see table below)
standby_state: 1, 2, 4 (see table below)
run: 0=standby ,1=run

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Excerpt

Timing Status Word

0
bit [0-31]Variablebit valuescorresponding
value
bit valuescorresponding
value
bit valuescorresponding
value
bit valuescorresponding
value
bit valuescorresponding
value
0LINAC freq. [Hz]1

25

050





101





2extraction freq. [Hz]10.200.50102

30100

40010

50001

6contiguous/equidistant0contiguous1equidistant





7mode -/+0e-1e+





8executionGo forever0Single sequence1Single cycle first bunch0Single cycle same bunch0Single cycle next bunch0Single sequence0Go forever
9010010
10001001
11010010
121000001
13standby state (*)1All Off LINAC standby0Spectrometer only 1Hz0Disable gun



14010



15001



16run/standby0standby1run





1710





18...31










  (*) "standby state" is the condition which is reached when a "standby" command is issued

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