Hi,
lrd-recrunch v3_4_21 has been completed and links in RECRUNCHDIR
for dst, flr, and ep_skim files have been updated. See details of
available crunch versions in the attached file "recrunch_status".
The new recrunch accounts for the new timing calibration obtained over
the summer by Mark Steadman involving run-by-run tdc offsets from
the flasher monitor, combined with control calibrations using
a number of dedicated cosmics runs.
The entire BLAST dataset for 2004-deuterium (7002-12143),
2004-hydrogen (12144-13278) and 2005-deuterium (13279-16506) has been
recrunched with lrd/v3_4_21. This recrunch is based on DSTs generated with
lrn/v3_4_14 (still accessible through ANALDIR).
The links in RECRUNCHDIR have now been updated to point to v3_4_21.
V19(2005deuterium) + v20(2004hydrogen) had used static timing calibration.
The pathlength got finally fixed only with v19, and the pion-pid with v20.
The momentum-cutoff was lowered from 0.15 GeV to 0.1 GeV/c as of v20.
In a separate email I will send a list of runs and detector channels that
should be excluded from the analysis. Note that if a channel is excluded
the affected run is still useful for the other majority of good channels.
Rejecting a channel acts like a local inefficiency, which should cancel
out when constructing the asymmetry.
Regards,
Michael
On Wed, 31 May 2006, Michael Kohl wrote:
> Hi,
>
> over the last week I have recrunched the 2004 hydrogen data #12144-13278
> with v3_4_20-lrd using static T0 offsets from the same calib file
> "blast.sc_cal" which was originally used for the online crunching.
> Pedestal subtraction and walk corrections for NC were nevertheless done with
> run-by-run calibration from MySQL.
>
> v3_4_20 accounts for a fix in pid (piplus were misassigned as protons when
> they triggered the event), and lower momentum cut off (>0.10 instead of
>> 0.15 GeV/c).
>
> RECRUNCHDIR has been updated to access the dst, flr, and ep_skim files.
> See the attached file recrunch_status for any details regarding other
> versions.
>
>
> Regards,
>
> Michael
>
>
>
> +-------------------------------------+--------------------------+
> | Office: | Home: |
> |-------------------------------------|--------------------------|
> | Dr. Michael Kohl | Michael Kohl |
> | Laboratory for Nuclear Science | 5 Ibbetson Street |
> | MIT-Bates Linear Accelerator Center | Somerville, MA 02143 |
> | Middleton, MA 01949 | U.S.A. |
> | U.S.A. | |
> | - - - - - - - - - - - - | - - - - - - - - -|
> | Email: kohlm@mit.edu | K.Michael.Kohl@gmx.de |
> | Work: +1-617-253-9207 | Home: +1-617-629-3147 |
> | Fax: +1-617-253-9599 | Mobile: +1-978-580-4190 |
> | http://blast.lns.mit.edu | |
> +-------------------------------------+--------------------------+
>
>
>
>
>
>
>
>
>
>
>
>
>
+-------------------------------------+--------------------------+
| Office: | Home: |
|-------------------------------------|--------------------------|
| Dr. Michael Kohl | Michael Kohl |
| Laboratory for Nuclear Science | 5 Ibbetson Street |
| MIT-Bates Linear Accelerator Center | Somerville, MA 02143 |
| Middleton, MA 01949 | U.S.A. |
| U.S.A. | |
| - - - - - - - - - - - - | - - - - - - - - -|
| Email: kohlm@mit.edu | K.Michael.Kohl@gmx.de |
| Work: +1-617-253-9207 | Home: +1-617-629-3147 |
| Fax: +1-617-253-9599 | Mobile: +1-978-580-4190 |
| http://blast.lns.mit.edu | |
+-------------------------------------+--------------------------+
This archive was generated by hypermail 2.1.2 : Mon Feb 24 2014 - 14:07:33 EST