G2p BPM calibration

New Hall A 4 channels BPM receivers

calibration code

A new beampackage python script is built for bpm calibration, you can download it from here.

It will download all of the beampackage code for the first time use and will guide you how to set your environment file. Also you can download the beampackage by hand from here.

The database you can find it from here,but don't worry it will download and update automatically when you use the beampackage.

To use it, just simply type:

./bpm.py rootfilepath (if it is not absolute path you need to define the rootfile path in the bpm.py file)

or:

./bpm.py runnumber (this way will insert all of the rootfiles for this run and you need to define the rootfile path in the code)

That's it!

Calibration

Result

2012-03-13 straight through

Harp Position

04 pos:	-0.596600	-3.427600
05 pos:	-0.083863	-0.210633

04 pos:	1.862300	-3.284650
05 pos:	5.177507	0.096181

04 pos:	-0.699100	-0.628700
05 pos:	0.361084	3.999516

04 pos:	-1.063000	-3.079700
05 pos:	-3.858823	-0.391652

FastBus BPM Constant(changed in DB)

Left Arm;
 BPMA:
  Pedestal: 6725  6822  6693  6646
  Constant: -0.805439 -0.918064 -0.655198 0.827926 0.000966196 -0.00048809
 BPMB:
  Pedestal: 6771  6692  6895  6636
  Constant: -0.94476 -0.43273 -0.450026 1.00609 0.000283125 -0.000590868
Right Arm:
 BPMA:
  Pedestal: 7993  7684  7650  7741
  Constant: -0.81659 -0.957246 -0.649409 0.849953 -0.000214091 0.000813938
 BPMB:
  Pedestal: 7647  7090  7515  7582
  Constant: -0.986274 -0.453713 -0.398684 0.978419 0.000452928 -0.000172695

Happex BPM Constant

Left Arm:
 BPMA: 
  Pedestal: -212 365 302 -50
  Constant: 0.672299 0.821784 0.821081 -0.75202 0.000213337 -0.000229398
 BPMB:
  Pedestal: -326 -2 149 255
  Constant: 0.497503 -0.960877 0.988539 0.484619 1.15764e-06 -0.000686385
Right Arm:
 BPMA:
  Pedestal: 289 -47 242 5
  Constant: 0.673755 -0.819618 0.821392 0.750197 9.88778e-05 -0.000539474
 BPMB:
  Pedestal: -75 324 361 382
  Constant: 0.497959 -0.956856 0.988169 0.487861 -9.26384e-05 -0.000520734