EMULATION OF THE SLOW CONTROL FOR THE PANDA CLUSTER - JET - - PowerPoint PPT Presentation

EMULATION OF THE SLOW – CONTROL

FOR

THE PANDA CLUSTER - JET GENERATOR PRESENTED BY Bogusław Zwięgliński National Centre for Nuclear Research Warsaw - Poland

Why emulation seems to be a necessary step in the project

• Safety considerations:

To avoid damage of the costly components of the cluster - jet generator (and the beam-dump) vacuum system by erroneous operation

• f the slow-control system in the course of its development,
• Organizational considerations:

To decouple development of the cluster - jet generator proper, at least temporarily, from the development of the slow-control system. Such a situation is met right now ===> the generator is being dismanteled at Uni - Muenster and transported to FZ - Juelich for installation on the proton beam of COSY. Tests of the beam - target interaction are scheduled in August 2018 (more on that from A.Kh. presentation).

CompactRIO1 RS485 bus Digital Output

CIMR-VC

Digital Input PC1 With LabVIEW

DO

TP1

TP3 TP2 vent VP1 VP2 RP2 P

C C 2

P

T V C 2

P

S C 1

P

S C 2

Snap connector

Transition

vacuum chamber

PTVC2

Collimator Chamber

Pcc2

Skimmer chamber

TP5 TP4 antiprotons Psc2 Psc1 PIVC2 PIVC1 Pcc1 PTVC1 P

V P 2

P

R P 1

P

R P 2

P

I V C 2

P

T V C 1

P

V P 1

P

C C 1

P

I V C 1 TURBO POWER 300

Digital Input Digital Output

PRP2 PRP1 PVP1 PVP2 VP12C VP12b

VP12a

VP11a VP11b VP10a VP9a VP10b VP9b VPsnap VP13 RS485

Center Three Center Three Center Three

RS 485-232 RS 485-232 RS 485-232 TURBO POWER 300

TURBO DRIVE 400

TURBO POWER 300

RP1 DI

Insulation vacuum chamber

RS 485-232 RS 485-232 RS 485-232 RS 485-232

Center Three

CI

MAG.DRIVE digital MAG.DRIVE digital

TURBO DRIVE 400 TURBO DRIVE 400 RUVATRONIC RT 5/2001

Cooling Water

An overview of the cluster - jet generator vacuum

system and interfaces to its vacuum devices

Elements of the vacuum system and interfaces to the CompactRIO-NI cRIO-9039

• Valves: operated by current pulses from Digital Outputs [DO]

Status (Open, Closed) indicated via Digital Inputs [DI]

• Vacuum sensors: Current values converted into digital form in the

Center Three units. Available at their outputs in the RS232 format.

• Vacuum pumps
• Forevacuum

Rotary vane pumps VP1, VP2: turned on and ofg by current pulses from DO, status indication and ErrorSignal received into DI inputs, Roots pumps RP1 - RUVATRONIC RT5/2001 - turned on by a start pulse and turned

• fg by a stop pulse from DO, status of operation (On/Ofg) indicated into DI,

RP2 - CIMR-VC(Yaskawa) - turned on by a start pulse and turned ofg by a stop pulse from DO, status of operation (On/Ofg) indicated into DI,

• High Vacuum

Turbomolecular pumps TP1,TP4,TP5 - TURBO.DRIVE400: turned on and ofg by current pulses from DO, status indication and ErrorSignal received into DI inputs, possibility to receive some detailed parameters of operations via the RS485 interface, Turbomolecular pumps TP2, TP3 (heavy duty) – MAG.DRIVEiM The pumps are turned on by a signal from DO and turned ofg by its disappearance. Status signals On/Ofg are indicated by a signal/or its absence at an input to DI. An error signal is sent to another input of DI.

Slow-control system emulation In the slow-control system emulation we intend to use Raspberry Pi controllers (e.g. RaspberryPi 3, Model B) as elements responding in a defjnite, programmed way to commands sent from the cRIO-9039, and the response that follows is that expected on this occasion from the real interface. RaspberryPi's will be programmed in Linux. We expect that with a few Raspberries it will be possible to emulate the vacuum system previously shown. On the occasion of the proposed test system several questions arise to be answered by our WWUM colleagues:

• Do you consider building such a system by us worthwhile?
• Will it be possible with the proposed scheme to prove by its operation

that switching from emulation, at a certain stage of its advancement, to the real vacuum system will not have any wrong consequences?

• At what time frame?

CI RS485 DO DI C

• m

p a c t R I O

Elements of the slow-control emulation

R a s p b e r r y P i

Thank you for your attention