AHCAL Spiroc2d Testbeam at DESY (November 2015)

Contents

Setup

Detailed information can be found in:

http://flcweb02.desy.de/flcwiki/2015?action=AttachFile&do=view&target=20151027_AI.pdf

and

https://agenda.linearcollider.org/event/6741/session/5/contribution/41

Spiroc2d

One small module is equipped, with several tiles in all of the chips, except in chip Spiroc2_3.

Channel map:

Spiroc2D map

T0 channels

Since run 40XXX, two t0 channels are operative in the module:

EUDAQ

We are running the data taking using the eudaq program, as in previous testbeams. For more detailed information, read the following link

http://flcweb02.desy.de/flcwiki/AHCALTestBeamCERN2015/#Common_DAQ:_EUDAQ

The output format is slightly different since two more integers have been added to the lcio object in order to have the gain_bit/hit_bit duplicated (one decoded from the ADC data stream from the spiroc and other decoded from the TDC data stream from the spiroc)

Electronics setup

The setup is very similar to the one used in previous testbeams. See for example http://flcweb02.desy.de/flcwiki/AHCALTestBeamCERN2015/#Electronic_setup_and_cabling:_diagrams_and_pictures . I the present case, we only use two scintillators (placed in front of the detector) and we also used, for first time, the BIF.

We are using two scintillators placed between the beam and the detector as validation signal. Both scintillators are thin sticks of about 1cm width and 15 cm lenght and both are crossed in order to set horizontal and vertical position with high precision. The coincidence signal is fed into the CCC to be used as validation signal.

The two signals from the scintillators and from the coincidence is conducted to the BIF to...

The coincidence signal is also fed into the two t0 channels.

Beam InFormation module (BIF)

The BIF is a modified AIDA mini-TLU, which is running in the slave mode and is connected to the LDA via HDMI cable. It receives clock, fast commands and trigger. The picture of the cable connection is shown here:(TODO). For the spiroc2D tests there was only 1 input: coincidence of the trigger scintillator.

The communication protocol and BIF data format is described in AHCAL_BIF.

The BIF readout cycles need to be correlated. For the time being the method is a guess based on the delay between readout cycles.

run

BIF datafile

bif start cycle

40094

data_2015-11-11_19-10.dat

78417

40095

data_2015-11-11_19-10.dat

128228

40096

data_2015-11-11_19-10.dat

178033

40097

data_2015-11-11_19-10.dat

227837

40098

data_2015-11-11_19-10.dat

277644

40099

data_2015-11-11_19-10.dat

327446

40100

data_2015-11-11_19-10.dat

377261

40101

data_2015-11-11_19-10.dat

427067

40102

data_2015-11-11_19-10.dat

476879

40103

data_2015-11-11_19-10.dat

526687

40104

data_2015-11-11_19-10.dat

576498

40105

data_2015-11-11_19-10.dat

626304

40106

data_2015-11-11_19-10.dat

676117

Data

Data are stored in the dCache Grid /grid/calice/tb-desy/native/desyAhcal2015/AHCAL_Testbeam_Raw_November_2015/

for more information, visit: http://flcweb02.desy.de/flcwiki/AHCALTestBeamCERN2015/#Data_access

As usual all the information about the runs is detailed in the elog https://ttfinfo.desy.de/CALICEelog-sec/show.jsp?dir=/2015/46/10.11&pos=2015-11-10T14:12:09 (10, 11 and 12 of november)

MIP scans

A summary of the most interesting runs are shown in the following table. Only the MIP scans using AT threshold of 150 DAC are shown, for more information check the elog.

Chip 129 (Spiroc2d_1) Threshold 150

Run

channel

MIP entries

40007-40013

4

350k

40021, 40022

5

120k

40023

11

130k

40024-40025

17

180k

40026

16

130k

40027

10

120k

40028

34

120k

40029

30

120k

40030

1

115k

40031

2

110k

44032

3

120k

Chip 130 (Spiroc2d_2) Threshold 150

Run

channel

MIP entries

40045

5

120k

40046

6

120k

40047

31

120k

40048

21

120k

Chip 132 (Spiroc2d_4) Threshold 150

Run

channel

MIP entries

40052

18

160k

40053

21

160k

40054

23

160k

40055

11

160k

40056

3

160k

Threshold scans

Chip 129 (Spiroc2d_1) Channel 4

Run

Threshold

MIP entries

40043

100

45k

40042

110

55k

40041

120

55k

40039

125

58k

40038

130

52k

40037

135

57k

40035

145

71k

40007-40013

150

50k x 7

40033

155

47k

Chip 130 (Spiroc2d_2) Channel 5

Run

Threshold

MIP entries

40074

100

70k

40075

110

70k

40072

120

130k

40076

125

89k

40077

130

89k

40078

135

80k

40079

140

89k

40080

145

70k

40081

150

68k

40082

155

60k

40083

160

64k (64k counting pedestal)

Chip 132 (Spiroc2d_4) Channel 18

Run

Threshold

MIP entries

40084

160

22k

40085

155

50k

40086

150

72k

40087

145

110k

40088

140

110k

Operation

The basics of the operation are the same than in last testbeam at CERN http://flcweb02.desy.de/flcwiki/AHCALTestBeamCERN2015

Some pecualiarities appear since we are using a new version of the Spiroc (Spiroc2d):

Labview operation

http://flcweb02.desy.de/flcwiki/AHCALTestBeamCERN2015/#Labview_operation

USBLab2.png, USBLab1.png

EUDAQ operation

http://flcweb02.desy.de/flcwiki/AHCALTestBeamCERN2015/#EUDAQ_operation

AHCALSpiroc2dTestBeam2015 (last edited 2016-02-08 16:42:10 by JiriKvasnicka)