twiss, file=myline.tfsMAD-X should then output the file myline.tfs with contents similar to this:
@ NAME %05s "TWISS"
@ TYPE %05s "TWISS"
@ SEQUENCE %04s "FODO"
@ PARTICLE %06s "PROTON"
@ MASS %le 0.938272046
@ CHARGE %le 1
@ ENERGY %le 7000
@ PC %le 6999.999937
@ GAMMA %le 7460.522809
@ KBUNCH %le 1
@ BCURRENT %le 0
@ SIGE %le 0.001
@ SIGT %le 1
@ NPART %le 0
@ EX %le 1
@ EY %le 1
@ ET %le 0.001
@ LENGTH %le 20
@ ALFA %le 0.03935197182
@ ORBIT5 %le -0
@ GAMMATR %le 5.041000619
@ Q1 %le 0.3324778408
@ Q2 %le 0.34039778
@ DQ1 %le -0.3359694135
@ DQ2 %le -0.347873262
@ DXMAX %le 2.507680273
@ DYMAX %le 0
@ XCOMAX %le 0
@ YCOMAX %le 0
@ BETXMAX %le 17.29369244
@ BETYMAX %le 17.03290805
@ XCORMS %le 0
@ YCORMS %le 0
@ DXRMS %le 2.137064072
@ DYRMS %le 0
@ DELTAP %le 0
@ SYNCH_1 %le 0
@ SYNCH_2 %le 0
@ SYNCH_3 %le 0
@ SYNCH_4 %le 0
@ SYNCH_5 %le 0
@ TITLE %08s "no-title"
@ ORIGIN %16s "5.02.10 Linux 64"
@ DATE %08s "15/06/16"
@ TIME %08s "11.41.16"
* NAME KEYWORD S BETX ALFX MUX BETY ALFY MUY
X PX Y PY T PT DX DPX DY DPY
WX PHIX DMUX WY PHIY DMUY DDX DDPX DDY DDPY
R11 R12 R21 R22 ENERGY L ANGLE K0L K0SL K1L
K1SL K2L K2SL K3L K3SL K4L K4SL K5L K5SL K
6L K6SL K7L K7SL K8L K8SL K9L K9SL K10L K10SL
K11L K11SL K12L K12SL K13L K13SL K14L K14SL K15L K15SL
K16L K16SL K17L K17SL K18L K18SL K19L K19SL K20L K20SL
KSI HKICK VKICK TILT E1 E2 H1 H2 HGAP FINT
FINTX VOLT LAG FREQ HARMON SLOT_ID ASSEMBLY_ID MECH_SEP V_POS LRAD PARENT
RE11 RE12 RE13 RE14 RE15 RE16 RE21 RE22 RE23
The TFS format starts with a header that describes the global beamline parameters and the individual element attributes. Each global parameter is described over a single line which starts with the character "@". These descriptions are followed by a line starting with the character * which specifies the attribute name and format of the elements. Note that if the SELECT command has been used, only the specified subset of attributes will be saved; this may cause the translation to fail. Following the * line, all the elements in the beamline are saved in a single record where element is a simply a sequence of attribute values appearing in the order specified on the * line.
Once a file in MAD-X TFS twiss table format has been created, from the top menu select File | Import | from MAD-X and pick the *.tfs file. The particle rest mass and initial energy are automatically extracted from the tfs file.