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colour	GreenYellow
title	FINALIN PROGRESS

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Designer

Developers

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Description

The DAFNE orbit is acquired by 4 front-end legacy Apple DEVILs (364, 365, 366, 367) and post processed by the DEVIL204DEVIL704.
The basic system elements created by the 4 front-end DEVILs are:

```
ORBRAK063 (364)
```
```
ORBRAK071 (365)
```
```
ORBRAK070 (366)
```
```
ORBRAK066 (367)
```

and the final system element created by the DEVIL204 DEVIL704 is:

```
GOD**001002
```

The DEVIL204DEVIL704, besides the two conventional GOD**001002_STA and GOD**001002_DYN forks, builds also a circular buffer some live buffers of data (containing the actual real-time X and Y orbit projections) accessible in the VME address space. To have this data also available on non-VME processors, a dedicated proxy constantly reads the GOD**001_STA and GOD**001_DYN forks, as well as the circular buffer from VME, and transfers them to memcached.

Source

[DEVIL364, 365, 366, 367] > [DEVIL204] > [Orbit_Proxy> [DEVIL704]

...

Keys

001Orbit_ProxySimple system element transferred from VME to memcached00110

2 rows of 64 DBL flattened to str

AVG10202D [DBL] flattened to str2D [DBL] flattened to strORBP*VAR10202D [DBL]ORBE*VAR2D [DBL] flattened to str

Key name

Source

Write freq. [Hz]

Data size [byte]

Throughput
[kbyte/s]

Fomat

Notes

GOD**

002_STA

DEVIL704

-

2624

-

typeDef

LV cluster flattened to str

GOD**

002_DYN

Orbit_Proxy

DEVIL704

5.5

46

0.45

typeDef

Simple system element transferred from VME to memcached

ORBP*DAT_BUF

Orbit_Proxy

10

1024

20

2D [DBL]

2 rows of 64 DBL flattened to str

row 0: hor, row 1: ver

25

LV cluster flattened to str

ORB-E_INFO
ORB-P_INFO

DEVIL704

-

~2500
~2500

-

Json document

Static description of the orbit with name, abscissa and index of each element.

name: name of the BPM [8-characters srting];
s: curvilinear abscissa (along the ring) [m];
i: index of element in the 64-DBL arrays. An example of the Json document is:

Expand

title	Detailed description

[
   {
      "name":"BPBEL101",
      "s":2.531,
      "i":0
   },
   {
      "name":"BPBEL102",
      "s":6.205,
      "i":1
   },
   
   ... etc ...

   {
      "name":"BPBEL209",
      “s":96.228,
      "i":59
   }
]

ORBE*NOD_BUF
It will be ORB-E_BUF

DEVIL704

5.5

1024

5.5

LV 2D-array flattened to str (see description below)

ORBE*DAT_BUF

Orbit_Proxy

10

1024

20

2D [DBL]

Electrons: average(N) of the orbit (hor + ver)
2 rows of 64 DBL (

row 0: hor, row 1: ver) [flattened to str]
64-components array with moving average calculated on the last N samples.

The N number is set by the operators via the orbit control window and can vary continuously. If you want to deal with an orbit averaged over a fixed number of samples, use the "ORB-E-USER_BUF" key instead.

ORBP*

NOD_BUF

Orbit_Proxy

It will be ORB-P_BUF

DEVIL704

5.5

1024

5.5

LV 2D-array flattened to str

Positrons: average(N) of the orbit (hor + ver)
2 rows of 64 DBL

(row 0: hor, row 1: ver

ORBE*AVG_BUF

Orbit_Proxy

10

1024

20

) [flattened to str]
64-components array with moving average calculated on the last N samples.

The N number is set by the operators via the orbit control window and can vary continuously. If you want to deal with an orbit averaged over a fixed number of samples, use the "ORB-E-USER_BUF" key instead.

ORB-E-STDDEV_BUF

DEVIL704

5.5

1024

5.5

LV 2D-array flattened to str

Electrons: Std. Dev. of the orbit (hor + ver)
2 rows of 64 DBL

(row 0: hor, row 1: ver

) [flattened to str]
64-components array with standard deviation calculated on the last N samples.

ORB-P-STDDEV

_BUF

Orbit_Proxy

DEVIL704

5.5

1024

5.5

LV 2D-array flattened to str

Positrons: Std. Dev. of the orbit (hor + ver)
2 rows of 64 DBL (row 0: hor, row 1: ver) [flattened to str]
64-components array with standard deviation calculated on the last N samples.

ORB-E-USER_BUF

DEVIL704

5.5

~700

3.9

LV 2D-array flattened to str

Electrons: average(8) of the orbit for users (hor + ver)
2 rows of 64 DBL (row 0: hor, row 1: ver

) [flattened to str]
64-components array with moving average calculated on the last 8 samples.

ORB-P-USER

_BUF

Orbit_Proxy

10

1024

20

DEVIL704

5.5

~700

3.9

LV 2D-array flattened to str

Positrons: average(8) of the orbit for users (hor + ver)
2 rows of 64 DBL

(row 0: hor, row 1: ver

...

) [flattened to str]
64-components array with moving average calculated on the last 8 samples.

kbyte/s	Mbit/s
120~301	~0.23

Keys usage

Example of LabVIEW code to use at level 1 to unflatten and extract from the 2D-array the two projections of the orbit:

When using languages different from LabVIEW, the "unflatten from string" operator is not available; in these cases, you have to decode the 2D-array.
The 2D-array is written in memcached as two I32 numbers – that report the number of rows and the number o columns of the 2D-array – followed by a series of DBL numbers (ordered row by row). The following example, reports the representation of a 2-rows, 3-cols array with the values: row 0 = [0,1,2], row 1 = [10,11,12]

Code Block

language	text
title	Example of 2D array (3 columns, 2 rows)

|< #rows >|< #cols >|        a00        |        a01        |        a02        |        a10        |        a11        |        a12        |
                    |                          first row                        |                          last row                         | 
|---------|---------|-------------------|-------------------|-------------------|-------------------|-------------------|-------------------|
 0000 0002 0000 0003 0000 0000 0000 0000 3FF0 0000 0000 0000 4000 0000 0000 0000 4024 0000 0000 0000 4026 0000 0000 0000 4028 0000 0000 0000

Map BPM Arrays

electrons

Code Block

language	js
title	ELECTRON ORBIT

[
   {
      "name":"BPBEL101",
      "s":2.531,
      "i":0
   },
   {
      "name":"BPBEL102",
      "s":6.205,
      "i":1
   },
   {
      "name":"BPBEL103",
      "s":8.808,
      "i":2
   },
   {
      "name":"BPBEL104",
      "s":9.803,
      "i":3
   },
   {
      "name":"BPBEL105",
      "s":12.135,
      "i":4
   },
   {
      "name":"BPBEL106",
      "s":13.920,
      "i":5
   },
   {
      "name":"BPBEL107",
      "s":16.293,
      "i":6
   },
   {
      "name":"BPBEL108",
      "s":17.184,
      "i":7
   },
   {
      "name":"BPBEL109",
      "s":21.095,
      "i":8
   },
   {
      "name":"BPBEL110",
      "s":24.308,
      "i":9
   },
   {
      "name":"BPBEL111",
      "s":24.885,
      "i":10
   },
   {
      "name":"BPBI1001",
      "s":25.455,
      "i":12
   },
   {
      "name":"BPBI1002",
      "s":25.926,
      "i":16
   },
   {
      "name":"BPBES199",
      "s":27.503,
      "i":18
   },
   {
      "name":"BPBES100",
      "s":30.283,
      "i":19
   },
   {
      "name":"BPBES101",
      "s":33.761,
      "i":20
   },
   {
      "name":"BPBES102",
      "s":34.919,
      "i":21
   },
   {
      "name":"BPBES103",
      "s":37.258,
      "i":22
   },
   {
      "name":"BPBES104",
      "s":39.043,
      "i":23
   },
   {
      "name":"BPBES105",
      "s":41.375,
      "i":24
   },
   {
      "name":"BPBES106",
      "s":42.370,
      "i":25
   },
   {
      "name":"BPBES107",
      "s":44.912,
      "i":26
   },
   {
      "name":"BPBES108",
      "s":48.140,
      "i":27
   },
   {
      "name":"BPBES201",
      "s":49.041,
      "i":32
   },
   {
      "name":"BPBES202",
      "s":49.997,
      "i":33
   },
   {
      "name":"BPBES203",
      "s":52.677,
      "i":34
   },
   {
      "name":"BPBES204",
      "s":55.219,
      "i":35
   },
   {
      "name":"BPBES205",
      "s":56.214,
      "i":36
   },
   {
      "name":"BPBES206",
      "s":58.546,
      "i":37
   },
   {
      "name":"BPBES207",
      "s":60.331,
      "i":38
   },
   {
      "name":"BPBES208",
      "s":63.455,
      "i":39
   },
   {
      "name":"BPBES209",
      "s":65.658,
      "i":40
   },
   {
      "name":"BPBES210",
      "s":69.515,
      "i":41
   },
   {
      "name":"BPBEL299",
      "s":74.283,
      "i":49
   },
   {
      "name":"BPBEL200",
      "s":78.185,
      "i":50
   },
   {
      "name":"BPBEL201",
      "s":79.361,
      "i":51
   },
   {
      "name":"BPBEL202",
      "s":80.703,
      "i":52
   },
   {
      "name":"BPBEL203",
      "s":83.668,
      "i":53
   },
   {
      "name":"BPBEL204",
      "s":85.453,
      "i":54
   },
   {
      "name":"BPBEL205",
      "s":87.786,
      "i":55
   },
   {
      "name":"BPBEL206",
      "s":88.781,
      "i":56
   },
   {
      "name":"BPBEL207",
      "s":91.338,
      "i":57
   },
   {
      "name":"BPBEL208",
      "s":94.561,
      "i":58
   },
   {
      "name":"BPBEL209",
      "s":96.228,
      "i":59
   }
]

Positrons

Code Block

language	js
title	POSITRON ORBIT

[
   {
      "name":"BPBPL101",
      "s":2.531,
      "i":0
   },
   {
      "name":"BPBPL102",
      "s":6.205,
      "i":1
   },
   {
      "name":"BPBPL103",
      "s":8.808,
      "i":2
   },
   {
      "name":"BPBPL104",
      "s":9.803,
      "i":3
   },
   {
      "name":"BPBPL105",
      "s":12.135,
      "i":4
   },
   {
      "name":"BPBPL106",
      "s":13.920,
      "i":5
   },
   {
      "name":"BPBPL107",
      "s":16.293,
      "i":6
   },
   {
      "name":"BPBPL108",
      "s":17.184,
      "i":7
   },
   {
      "name":"BPBPL109",
      "s":21.095,
      "i":8
   },
   {
      "name":"BPBPL110",
      "s":24.308,
      "i":9
   },
   {
      "name":"BPBPL111",
      "s":24.885,
      "i":10
   },
   {
      "name":"BPBI1002",
      "s":25.455,
      "i":12
   },
   {
      "name":"BPBI1001",
      "s":25.926,
      "i":16
   },
   {
      "name":"BPBPS199",
      "s":27.503,
      "i":18
   },
   {
      "name":"BPBPS100",
      "s":30.283,
      "i":19
   },
   {
      "name":"BPBPS101",
      "s":33.761,
      "i":20
   },
   {
      "name":"BPBPS102",
      "s":34.919,
      "i":21
   },
   {
      "name":"BPBPS103",
      "s":37.258,
      "i":22
   },
   {
      "name":"BPBPS104",
      "s":39.043,
      "i":23
   },
   {
      "name":"BPBPS105",
      "s":41.375,
      "i":24
   },
   {
      "name":"BPBPS106",
      "s":42.370,
      "i":25
   },
   {
      "name":"BPBPS107",
      "s":44.912,
      "i":26
   },
   {
      "name":"BPBPS108",
      "s":48.140,
      "i":27
   },
   {
      "name":"BPBPS201",
      "s":49.041,
      "i":32
   },
   {
      "name":"BPBPS202",
      "s":49.997,
      "i":33
   },
   {
      "name":"BPBPS203",
      "s":52.677,
      "i":34
   },
   {
      "name":"BPBPS204",
      "s":55.219,
      "i":35
   },
   {
      "name":"BPBPS205",
      "s":56.214,
      "i":36
   },
   {
      "name":"BPBPS206",
      "s":58.546,
      "i":37
   },
   {
      "name":"BPBPS207",
      "s":60.331,
      "i":38
   },
   {
      "name":"BPBPS208",
      "s":63.455,
      "i":39
   },
   {
      "name":"BPBPS209",
      "s":65.658,
      "i":40
   },
   {
      "name":"BPBPS210",
      "s":69.515,
      "i":41
   },
   {
      "name":"BPBPL299",
      "s":74.283,
      "i":49
   },
   {
      "name":"BPBPL200",
      "s":78.185,
      "i":50
   },
   {
      "name":"BPBPL201",
      "s":79.361,
      "i":51
   },
   {
      "name":"BPBPL202",
      "s":80.703,
      "i":52
   },
   {
      "name":"BPBPL203",
      "s":83.668,
      "i":53
   },
   {
      "name":"BPBPL204",
      "s":85.453,
      "i":54
   },
   {
      "name":"BPBPL205",
      "s":87.786,
      "i":55
   },
   {
      "name":"BPBPL206",
      "s":88.781,
      "i":56
   },
   {
      "name":"BPBPL207",
      "s":91.338,
      "i":57
   },
   {
      "name":"BPBPL208",
      "s":94.561,
      "i":58
   },
   {
      "name":"BPBPL209",
      "s":96.228,
      "i":59
   }
]

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Key

Description

Keys

Keys usage

Map BPM Arrays

electrons

Positrons