# Presentation: 683030

## First operation of the TTF2 injector with beam  

**First operation of the TTF2 injector with beam **
- Jean-Paul Carneiro
- DESY Hamburg
- TESLA COLLABORATION MEETING
- DESY Hamburg, 16 Sept 2003

## TTF2 INJECTOR SCHEMATIC

- Jean-Paul Carneiro

- FIRST OPERATION OF THE TTF2 INJECTOR WITH BEAM

-  BC 2

- (1)	From P.Piot, EPAC 2002, p. 1798
- (2)   From S. Schreiber, private communication

- ACC 1

- DOUBLET

- S. H.

- TRIPLET

-       RF GUN
- + SOLENOIDES

- dump

- Bunch Charge	1 nC			OK
- Laser Diameter 	3 mm (uniform)		OK
- Laser pulse length 	20 ps flat top + 3 ps rise time	20 ps flat top + 6 ps rise time
- Solenoid Bmax	163 mT			OK
- Phase Gun		34 Deg			OK
- Field Cathode	40 MV/m			OK
- ACC1 (cav 1 to 4)	12.5 MV/m			15 MV/m
- ACC1 (cav 5 to 8)	20 MV/m			15 MV/m
- Phase ACC1	-10.8 Deg (w.r.t max energy)               on crest
- ACC39		14 MV/m			not present
- Phase ACC39	183.0 Deg (w.r.t max energy)	not present

- Nominal Operation (1)		First Operation (2)

- _STOP SIMULATIONS AT Z =19 M_

## TTF2 LASER (ASTRA GENERATOR OUTPUTS, 2E5 p.)

- Jean-Paul Carneiro

- FIRST OPERATION OF THE TTF2 INJECTOR WITH BEAM

**TTF2 LASER (ASTRA GENERATOR OUTPUTS, 2E5 p.)**

- • Transverse distribution : uniform, r = 1.5 mm
- • Longitudinal distribution : uniform, L=20 ps with ~5 ps rise times
- • Thermal emittance : 55 keV

- From  TELSA-FEL 97-01 (K. Floettmann) :

- _Longitudinal distribution_

- _Transverse distribution_

## PHASE SCAN OF TESLA XFEL WITH ASTRA

- Jean-Paul Carneiro

- FIRST OPERATION OF THE TTF2 INJECTOR WITH BEAM

**PHASE SCAN OF TESLA XFEL WITH ASTRA**

- • TTF2 NOMINAL : 40 MV/m, 0.163 T, L = 20 ps + 3 ps rise time, r =1.5 mm
-   *(plot presented at the S2E Workshop, DESY ZEUTHEN, AUG-2002, http://www.desy.de/s2e)*

## ENERGY AND ENERGY SPREAD  

- Jean-Paul Carneiro

- FIRST OPERATION OF THE TTF2 INJECTOR WITH BEAM

## LONG. PHASE SPACE AT Z=19 M (END INJECTOR)  

- Jean-Paul Carneiro

- FIRST OPERATION OF THE TTF2 INJECTOR WITH BEAM

**LONG. PHASE SPACE AT Z=19 M (END INJECTOR)  **

- TAIL

- TAIL

- HEAD

- HEAD

- TAIL

- _NOMINAL_

- _FIRST OPERATION_

## EMITTANCE AND ENVELOPE

- Jean-Paul Carneiro

- FIRST OPERATION OF THE TTF2 INJECTOR WITH BEAM

## BUNCH LENGTH

- Jean-Paul Carneiro

- FIRST OPERATION OF THE TTF2 INJECTOR WITH BEAM

**BUNCH LENGTH**

## SPOT AND TRANSVERSE PHASE SPACE  (AT Z =19 M)

- Jean-Paul Carneiro

- FIRST OPERATION OF THE TTF2 INJECTOR WITH BEAM

**SPOT AND TRANSVERSE PHASE SPACE  (AT Z =19 M)**

## SLICE EMITTANCE AND RMS SIZE (19 M)

- Jean-Paul Carneiro

- FIRST OPERATION OF THE TTF2 INJECTOR WITH BEAM

**SLICE EMITTANCE AND RMS SIZE (19 M)**

## CURRENT DISTRIBUTION (AT Z =19 M)

- Jean-Paul Carneiro

- FIRST OPERATION OF THE TTF2 INJECTOR WITH BEAM

**CURRENT DISTRIBUTION (AT Z =19 M)**

## CONCLUSION

- Jean-Paul Carneiro

- FIRST OPERATION OF THE TTF2 INJECTOR WITH BEAM

**CONCLUSION**

- • CHARGE			        1          nC	                 1           nC
- • MOMEMTUN		                        121.7   MeV/c                  134.05  MeV/c
- • ENERGY SPREAD	                        0.9       [%]                       0.2        [%]
- • RMS EMITTANCE	                        1.28     [mm-mrad]           1.75      [mm-mrad]
- • RMS SIZE		                         0.41    [mm]                     0.41      [mm]
- • BUNCH LENGTH	                        1.88     [mm]                     2.1        [mm]
- • PEAK CURRENT	                        ~ 60     [A]                        ~ 40      [A]
- • SLICE EMITTANCE	                        ~ 1       [mm-mrad]           ~ 1        [mm-mrad]

- _NOMINAL_

- _FIRST OPERATION_