Time-of-flight system for controlling the beam composition

P.Batyuk, I.Gnesi, V.Grebenyuk, A.Nikiforov, G.Pontecorvo, F. Tosello

JINR, 2011

NEC'2011 VARNA BULGARIA

Time-of-flight system for controlling the beam composition

Monitoring the beam composition

Two main reasons for composition change: instability of currents in the elements of magnetic optics inaccurate positioning of target station

For monitoring the beam composition by transit time the system was built based on CAMAC (Computer-Aided Measurement and Control) modules and ETHERNET Crate Controller from CAEN.

The system block diagram

Remote connection

To connect the CAMAC Create with remote PC were used:C111C Ethernet CAMAC Create Controller program for remote connection PC with CAMAC Create

Four main parts of program:socket creation (socket with two parameters: IP address, port number)establish a client - server connection data exchange socket destruction

Socket connectionThe server is a controller and a program is a client

Data exchange mode

command F24 is used to stop the spectrum accumulation in memory module; command F17 makes output in the line; after LAM signal program switches into spectrum reading mode; command F16 is used to read data from memory.

ResultsSpectra were obtained at different currents in the lens

ML31, which focuses beam on the target.

0 10 20 30 40 50 60 70 80 90 1001101201301401501601701801902000

2000

4000

6000

8000

10000

12000

14000

16000

18000

N

time

ML31=-21,140,43ns/ch

Results

Spectra were obtained for study of the beam Spectra shows suitability of the system work

0 10 20 30 40 50 60 70 80 90 1001101201301401501601701801902000

2000

4000

6000

8000

10000

12000

14000

16000

18000

N

time

ML31=-21,140,43ns/ch

References

V. F. Boreyko, Y. M. Valuev, V. M. Grebenuk and oth. JINR report R10-85-661, Dubna, 1985; V. M. Grebenuk, A. V. Selikov, JINR preprint R10-90-335, Dubna, 1990; V. A. Antuhov, D. Vasilev, N. I. Jouravlev and oth. JINR report R10-86-854, Dubna, 1985; V. A. Antuhov, D. Vasilev, N. I. Jouravlev and oth. JINR report R10-85-922, Dubna, 1985; CAEN Technical Information Manual. Revision n.9 27 May 2009.