1. Low Level Radio Frequency System of NICA linac
XXV International symposium on Nuclear Electronics & Computing
NEC’2015
Low Level Radio Frequency System
of NICA linac
Liakin D., Kulevoy T., ITEPH
Dr. Gorbunov N.V., Shirikov I.V.
JINR, LHEP

2. NICA INJECTION COMPLEX
LINEAR ACCELERATOR HiLAC
LINEAR ACCELERATOR LU-20
Shirikov I.V. /Low level radio frequency system of NICA linac/NEC’2015

3. Many system Resonator Heavy ion LinAC Z/A=1/16 BUNCHER RFQ IH-2 IH-1
Type
Length
RF power
Output energy
RFQ
4 - rod
3.16 m
120 kW
0.3 MeV/u
MEBT
Two QD + buncher
1.4 m
3 kW (buncher)
IH1
DTL + QT
2.3 m
296 kW
2 MeV/u
IH2
DTL
2.1 m
278 kW
3.2 MeV/u
Z/A=1/16
Shirikov I.V. /Low level radio frequency system of NICA linac/NEC’2015

4. RF-amplifieres 340 kW 340 kW 140 kW
Shirikov I.V. /Low level radio frequency system of NICA linac/NEC’2015

5. LLRF
MAIN
SCHEMA-TIC

6. tuning plungers Heavy ion LinAC
Shirikov I.V. /Low level radio frequency system of NICA linac/NEC’2015

7. ELECTRICAL SCHEMATIC
Shirikov I.V. /Low level radio frequency system of NICA linac/NEC’2015

8. Technical characteristics of input filters:
INPUT ADC’s
Technical characteristics of input filters:
Main frequency…………………………………………………… MHz
Amplitude frequency characteristic in  bandwidth ± 0.5 MHz …..0.1 dB
Frequency rejection in <84 and >116 MHz………………………> 40 dB
Shirikov I.V. /Low level radio frequency system of NICA linac/NEC’2015

9. INPUT FILTERS
Shirikov I.V. /Low level radio frequency system of NICA linac/NEC’2015

10. INPUT FILTERS Green curve – 0,48 pF Red curve – 0,49 pF
Shirikov I.V. /Low level radio frequency system of NICA linac/NEC’2015

11. INPUT FILTERS
Shirikov I.V. /Low level radio frequency system of NICA linac/NEC’2015

12. LLRF Layout
Shirikov I.V. /Low level radio frequency system of NICA linac/NEC’2015

13. PC Software
Shirikov I.V. /Low level radio frequency system of NICA linac/NEC’2015

14. HiLAC WITH LLRF RF-amplifiers LLRF IH2 IH1 RFQ
Shirikov I.V. /Low level radio frequency system of NICA linac/ NEC’2015

15. Thank you for your attention!

17. XXV
Shirikov I.V. /Low level radio frequency system of NICA linac/NEC’2015