# Module 2
############

=>30/01/2008

New reference frame
-------------------

sc  x     h
0   -14   13.5 
1   -6    4
2   5     1
3   16    4
4   24.   13.5
 
Connectivity
------------

sc   adc
0     0
1     5
2     2
3     4
4     3




Start the HV scan
==================
E=471 MeV

Run 876
--------
-sector 2
-HV=1300 V

=> crap.... 
We expect to find a peak at 
least at ~1500 in adc5, and instead 
we find only ~300....

Try next run with higher voltage...

Run 877
--------
-sector 2
-HV = 1350 V

=> same pb...
   further rise the HV

Run 878
--------
- sector 2
- HV = 1500 V 
=> same

try sector 3


Run 879
--------

-sector 3
- HV = 1500 V

=> Still strange...

Run 880
--------
-sector 1
-HV = 1500 V

=> same...


Run 881
-------
-sector 0
-HV = 1550 V
looks better, but still low :
sgl electron peak ~ 1200.... 


Run 882 
-------

-sector 4
-HV = 1550
Same as just above. The global 
shape looks correct, but the 
numbers are lower...

Try higher voltage

Run 883
-------
-sector 4
-HV = 1600 V

Single Electron peak higher, as 
expected. 

Come back to sector 2


Run 884
--------
-sector 2
-HV = 1550 V
=> sgl electron peak still low (~750)

Run 885
--------
-sector 2
-HV = 1600 V
=> No increment of the electron peak....


Run 886
--------
-sector 2
-HV = 1700 V
=> better (~1000)








Run 888 
--------
-sector 1
-HV = 1600 V


Run 889
-------
-sector 1
-HV = 1700 V



=> 31/01/2008

About the problems last 
evening: might just be normal 
and mean that the PM needs
higher HV....
Let's scan again...


Run 890
-------
-sector 2
-HV = 1700 V

Sgl electron peak is around
1135. Seems a little weak 
(and weaker than other sectors)
for such  a voltage. 
Try higher voltage.


Run 891
-------
-sector 2
-HV = 1800 V
=> killed since we lost the beam

Run 892
-------
-sector 2
-HV = 1800 V

=> killed since we are not in sgle ele


Run 893
-------
-sector 2
-HV = 1800 V

=> same


Run 894
-------
-sector 2
-HV = 1700 V
=> Still in saturation (was a 
   Xcheck that the beam is indeed 
   too intense to give sgle electron, 
   and that the pb does not come from the 
   PM).



Run 895
-------
-sector 2
-HV = 1800 V 

=> peak at ~1800.
=> So it is OK. 
   This PM is  just different 
   from the ones in m1 and m0, 
   but works fine. Same conclu 
   for the other sectors, except 
   sector 3, that still has to be 
   checked.

Run 896
-------
-sector 3
-HV = 1550 V 

=> peak at 750.
Differs a bit from yesterday.
Might be varying beam conditions...

Try with a higher voltage...


Run 897
-------
-sector 3
-HV = 1700 V 

=> peak at 1500.
   Thus, this sector is OK as well...




NOW WE CAN START AGAIN THE HV SCAN !!!!!


Run 898
-------
-sector 3
-HV = 1500 V
- 5 min
sgl e peak ~750

Run 899
-------
-sector 3
-HV = 1600 V
- 5 min
sgl e peak ~950


Run 900
-------
-sector 3
-HV = 1700 V
- 5 min
sgl e peak ~1500


Run 901
-------
-sector 3
-HV = 1800 V
- 5 min
sgl e peak ~2000



Run 902
-------
-sector 3
-HV = 1900 V
- 5 min
sgl e peak ~3500
Begin to saturate.


=> Switch to sector 1

Run 903
-------
-sector 1
-HV = 1500 V
- 5 min
sgl e peak ~800


Run 904
-------
-sector 1
-HV = 1600 V
- 5 min
sgl e peak ~1100

Run 905
-------
-sector 1
-HV = 1700 V
- 5 min
sgl e peak ~1600


Run 905
-------
-sector 1
-HV = 1800 V
- 5 min
sgl e peak ~2600



run 906 killed (beam loss)


Run 907
-------
-sector 1
-HV = 1900 V
- 5 min
Saturation, as expected.
However, lower the HV to 
check we indeed have 1 sgle 
electron (saturation make the 
peak difficult to see ) !




Run 908
-------
-sector 1
-HV = 1600 V
- 5 min
=> Confirms saturation is due 
only to HV.

Now switch to s2

Run 909
-------
-sector 2
-HV = 1500 V
- 5 min
sgle e peak at~650 

Run 910
-------
-sector 2
-HV = 1600 V
- 5 min
sgle e peak at~750
Not a big increment...


Run 911
-------
-sector 2
-HV = 1700 V
- lunch time
Beam conditions changed
inbetween, thus we take a 
new measurement at this 
HV. 


Run 912
-------
-sector 2
-HV = 1700 V
- 5 min
sgle e peak at ~1100
Big pedestal...


Run 913
-------
-sector 2
-HV = 1800 V
- 5 min
sgle e peak at~
=> Probably bad. 
Linac is presently running with 
positrons... Then we guess
there are some settings to change 
somewhere, but do not know which...


-> Set the slits to the correct settings...


Run 914
-------
-sector 2
-HV = 1800 V
- 5 min
sgle e peak at~1800

Run 915
-------
-sector 2
-HV = 1900 V
- 5 min
sgle e peak at~2500+saturation


Run 916
-------
-sector 4
-HV = 1500 V
- 5 min
sgle e peak at~800

Run 917
-------
-sector 4
-HV = 1600 V
- 5 min
sgle e peak at~1200

Run 918
-------
-sector 4
-HV = 1700 V
- 5 min
sgle e peak at~2000

Run 919
-------
-sector 4
-HV = 1800 V
- 5 min
sgle e peak at~3400.
Saturation begins...

Run 920
-------
-sector 4
-HV = 1900 V
- 5 min
Stopped after 7000 evts.
The saturation is such that 
it is probably useless to 
accumulate more.


Switch to sector 0

Run 921
-------
-sector 0
-HV=1500 V
electron peak at ~900


Run 922
-------
-sector 0
-HV=1600 V
electron peak at ~1250


Run 923
-------
-sector 0
-HV=1700 V
electron peak at ~2200

Run 924
-------
-sector 0
-HV=1800 V
electron peak at ~3300
saturation starts.


Run 925
-------
-sector 0
-HV=1900 V
Saturation. 


START A VERTICAL SCAN IN SECTOR 2

We do not have yet the equalization
HV, but we'll extrapolate the results 
to these voltages later, based on 
Paolo's fits.
For the moment, all sectors are
at HV=1600 V.


Run 927
--------
-sector 2
-HV = 1600
-(x,h)= 5 , 8.5 




EQUALIZATION IS DONE !!
HV are the following ones (working point at 2300 adc)
s0=1738 V
s1=1792 V
s2=1885 V
s3=1817 V
s4=1740 V


RESUME VERTICAL SCAN !!


Run 928
--------
-sector 2
-(x,h)= 5 , 8.5 

=> PB with DAQ, discard.



Run 929
--------
-sector 2
-(x,h)= 5 , 8.5 


Run 930
--------
-sector 2
-(x,h)= 5 , 6 

Run 931
--------
-sector 2
-(x,h)= 5 , 4.5 


Run 932
--------
-sector 2
-(x,h)= 5 , 3.5

Run 933
--------
-sector 2
-(x,h)= 5 , 1


Run 934
--------
-sector 2
-(x,h)= 5 , -0.5

---VERTI SCAN OVER ----

-- START THE HORI SCAN ---


Run 935
--------

- night long scan !!!
- setting done by Giovanni to 
  resist to linac swithing from 
  e- to e+ and vice versa...

- Try a point close to 
  the lower edge of the calo 
  (imp to understand what happens
   if a part of the shower in missed)...

-sector s0
-(x,h)= -5 , 15.75

Friday morning.


*Run 936
 --------
 - sector 1
 - x, h = -2.25, 10.44   

*Run 937
 --------
 - sector 1
 - x, h = -4.75, 10.44   


*Run 938
 --------
 - sector 1
 - x, h = 0.25, 10.44   


*Run 939
 --------
 - sector 0
 - x, h = -10.25, 10.44   


*Run 940
 --------
 - sector 0
 - x, h = -16.55, 10.44   


*Run 941
 --------
 - sector 0
 - x, h = -21.75, 10.44   

*Run 942
 --------
 - sector 3
 - x, h = 12.25, 10.44   

*Run 943
 --------
 - sector 3
 - x, h = 14.75, 10.44   

Killed: problem with one dafne magnet…
No beam. 

*Run 944
 --------
 - sector 3
 - x, h = 9.75, 10.44   
  
 
*Run 945
 --------
 - sector 3
 - x, h = 14.75, 10.44   

LINAC problem, no beam

*Run 946
 --------
 - sector 4
 - x, h = 21.25, 10.44   

*Run 947
----------
- sector 4
- x, h = 26.75, 10.44

*Run 948
 --------
 - sector 4
 - x, h = 31.75, 10.44  



*Run 949
 --------
 - sector 2
 - x, h =5. , 5.6  



*Run 950
 --------
 - sector 2
 - x, h = 2.5, 5.6  


*Run 951
 --------
 - sector 2
 - x, h = 7.5, 5.6