sPHENIX discussion of electronics

[Martin Purschke <purschke AT bnl.gov>]

All,

I updated the event libs with two new hitformats for 12 and 16 samples.
The PCF file must reflect your respective choice when taking the data.
While the digitizers support an arbitrary number of samples <= 31, e
decided to restrict ourselves to 12,1 6,31 in order to avoid a
proliferation of hitformats.

We have now

> #define IDDIGITIZER_31S     93
> #define IDDIGITIZER_12S     94
> #define IDDIGITIZER_16S     95

with 93 being the old one that most existing files have.


I have changed the hitformat in one of Ed's recent files with 12 samples:

> changehitformat adcjh5_12m_t2.prdf adcjh5_12m_t2_converted.prdf 93 94

and then:

> $ dlist /sphenix/data/data01/caladc/hcallab/adcjh5_12m_t2_converted.prdf
> Packet  21351  2333  0 (Unformatted)    94 (IDDIGITIZER_12S)

> $ ddump /sphenix/data/data01/caladc/hcallab/adcjh5_12m_t2_converted.prdf | 
> more
> Packet  21351  2333  0 (Unformatted)    94 (IDDIGITIZER_12S)
> Evt Nr:      0
> Clock:       54520
> Nr Modules:  3
> Channels:    192
> Samples:     12
> Det. ID:     0x5555
> Mod. Addr:   0x3333
> FEM Slot:          16      15      14
> FEM Evt nr:         1       1       1
> FEM Clock:      54389   54393   54380
> Even chksum: 0xffda   calculated:  0xffda ok
> Odd chksum:  0xd46e   calculated:  0xd46e ok
> 
>    0 |    57c   57a   57a   579   579   577   57b   57b   578   57a   578   
> 57b
>    1 |   1fc7  1fca  1fca  1fc7  1fc8  1fc8  1fc6  1fc6  1fc8  1fc9  1fcc  
> 1fc6
>    2 |   2047  2047  2047  2048  2049  2047  2048  2048  2047  204a  2046  
> 2048
>    3 |   2063  2063  2063  2064  2064  2063  2063  2063  2064  2063  2064  
> 2063
>    4 |    5b5   5b7   5b7   5b7   5b1   5b7   5b6   5b6   5b6   5ba   5b7   
> 5b7
>    5 |    55b   55b   55b   55a   55d   55a   55b   55b   55b   558   55a   
> 55d
>    6 |    5c3   5c2   5c2   5c2   5be   5c3   5c2   5c2   5c4   5c7   5c4   
> 5bf
>  ...

Best,
        Martin


-- 
Martin L. Purschke, Ph.D.        ;   purschke AT bnl.gov
                                 ;   http://www.phenix.bnl.gov/~purschke
                                 ;
Brookhaven National Laboratory   ;   phone: +1-631-344-5244
Physics Department Bldg 510 C    ;   fax:   +1-631-344-3253
Upton, NY 11973-5000             ;   skype: mpurschke
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