Thanks Chris but obviously since the previous calibration had a
pedestal there should also be some lines to the effect of
scal_charge = dcct - pedestal
Cheers,
Douglas
26-415 M.I.T.
Tel: +1 (617) 258-7199
77 Massachusetts Avenue Fax: +1 (617)
258-5440
Cambridge, MA 02139, USA E-mail:
hasell@mit.edu
On Apr 13, 2005, at 6:49 PM, Chris Crawford wrote:
> Doug, ready for 1/3 of a pleasant surprise?
>
> There are 1/(1/3) places:
>
> ep_skim.h:128:float par0 = 2.90027; -> not used! delete it to save
> confusion
>
> TBLEpicsRecon.h:146: float par0, par1, par2, pedestal;
> TBLEpicsRecon.cc:47: par0 = 2.63549; par1 = 1.50749e-4; par2 =
> 1.8612e-10;
> TBLEpicsRecon.cc:55: par0 = 2.90027, par1 = 3.01409e-4, par2 =
> 6.18094e-10;
> TBLEpicsRecon.cc:77:
> >>inputreg>>tslreg>>slots>>nbgsca>>bgsca>>spinflipon>>pedestal>>par0>>p
> ar1>>par2;
> TBLEpicsRecon.cc:85:
> >>inputreg>>tslreg>>slots>>nbgsca>>bgsca>>spinflipon>>pedestal>>par0>>p
> ar1>>par2;
> TBLEpicsRecon.cc:446: fScaler->fScaler_Beam = par0 +
> scal_charge*(par1 + par2*scal_charge);
> TBLEpicsRecon.cc:447: fScaler->fBG_Beam = par0 +
> bgscal_charge*(par1 + par2*bgscal_charge);
>
> and then edit "Blast_Param/epics.cal"
> note: this file is not archived (it has its own history), so don't
> worry about reading a file with fewer parameters. good design choice,
> Chi!
>
> i don't care about when you start crunching with the update, but
> please check in a new version of BlastLib2 (v3_4_7) when you do.
> (see elog sticky note)
>
> --Chris
>
>
> Douglas Hasell wrote:
>
>> Did not ask Dan about this. We can check when we get beam.
>>
>> Who knows where all the places for this calibration exist in the
>> code. I will be pleasantly surprised it there is just one place that
>> needs to be changed. Also we need to decide when we change the code.
>>
>>
>> Cheers,
>>
>> Douglas
>>
>> 26-415 M.I.T.
>> Tel: +1 (617) 258-7199
>> 77 Massachusetts Avenue Fax: +1
>> (617) 258-5440
>> Cambridge, MA 02139, USA E-mail:
>> hasell@mit.edu
>> On Apr 13, 2005, at 6:07 PM, Chris Crawford wrote:
>>
>>> Hi Doug,
>>> Was the calibration of the epics LDCCT variable OK? I was under
>>> the impression that Dan had been calibrating it periodically in
>>> hardware, so it should still be accurate.
>>> --thanks, Chris
>>>
>>> Electronic Log Book wrote:
>>>
>>>> Operator: hasell
>>>>
>>>> Easy shift - hall open.
>>>>
>>>> Karen, Dan, and I recalibrated the DCCT scaler against a calibrated
>>>> charge source. See run 15198. Also performed the fit. Results are
>>>> in ELOG. Interesting thing to note is that the voltage to
>>>> frequency converter is only good to just over 250 mA so unless we
>>>> want to make a big change we should stay below 250 mA for data
>>>> acquisition.
>>>>
>>>> Michael and Karen replaced the laser on the flasher system. So
>>>> that is working again for runs 15206 and following.
>>>>
>>>> Aki has recalibrated the unpol system so it is now available for
>>>> both H and D.
>>>>
>>>> Nozzle was regenerated and Genya started ABS again.
>>>>
>>>> Bill and Taylan measured the circular polarisation of the laser
>>>> just before it entered the ring and found that it is getting worse
>>>> with time. Mostlikely the reason is dirty optics. Still the
>>>> effect is small enough that we won't do anything about it.
>>>>
>>>> Other that we took cosmic data.
>>>>
>>>> Started locking up the south hall at 16:30.
>>>>
>>>> Runs 15200-15201 15203-15209 are cosmic
>>>>
>>>>
>>>
>
This archive was generated by hypermail 2.1.2 : Mon Feb 24 2014 - 14:07:32 EST