Report

~first collisionAuAu200GeV

@Run10

Kotaro Kijima

2010/01/25 Local lab meeting

2

Before the first collision

3

Check

• Internal Q-scan & T-scan• Interlock system works fine

– N2 air flow – Temperature

• HV– HV modules works– Noise shape seems fine for all PMTs.

• Laser data– All raw PMTs shape for laser signal are fine.– We took laser data by DAQ.

Laser signal

Adc tdc0 tdc1

Q-scan

T-scan

Laser signal Laser signal Laser signal

4

After the first collision

5

Time in• Change MTM timing by v124(ch7)

– Fine Delay 132 → 116 (8ns)

• Time in at 12/28!!

ch1: BBC GTMch2: Discriminator output

~60ns

~68ns

Change delay

But, BBLL1 trigger has problem…Above figure is obtained by ZDCLL1 trigger

6

Online monitor

Trigger is ZDCLL1• BBLL1 has problem.• We can NOT take data

with BBLL1 trigger– prescale of BBLL1 set to

999999– LL1 expert is working

• Now, we are taking data with ZDCLL1 trigger.

• The missing plots on BBC monitor is due to BBCLL1.

• BBC is working fine!!

7

ADC distribution • Some PMT channels have overflow

– Same HV with Run9 – Fraction of overflow is less 0.1% (see attached file “hvopt_299055.pdf”)

100

4090[%]

entriesAllofNumber

overflowchoverSumFraction

ch0 ch8

8

PmtGain (pC/MIP)• Calibration have done (Run298917)

– Same HV with RUN9– Note: ZDCLL1 trigger events was used

• PmtGain@Run10 is typically 15% larger than @end of Run9– Large fluctuation

• Need new optimized HV for RUN10

@Run10@end of Run9

(Run10–Run9)/Run9 x100

ch0

9

Determination of HV

• Gain Curve was Obtained– For 6 settings

• -100, -50, 0, +25, +50, +75V

• Optimized HV was obtained– Inner ring :30pC/MIP HV– mid&outter: 40pC/MIP HV

ADC distribution

Gain curve

Determined Optimized HV

pC /

MIP

Used pC/MIP@Run10 as normalization point for blue curve

10

Operational HV RUN10 for +- field

(30, 40pC/MIP HV)• HV_BB_S-1 -1649.7• HV_BB_S-2 -1914.2• HV_BB_S-3 -1676.3• HV_BB_S-4 -2134.0• HV_BB_S-5 -2029.2• HV_BB_S-6 -1485.4• HV_BB_S-7 -1631.7• HV_BB_S-8 -1957.3

• HV_BB_N-1 -1603.1• HV_BB_N-2 -2400.0• HV_BB_N-3 -1716.2• HV_BB_N-4 -1868.6• HV_BB_N-5 -1529.9• HV_BB_N-6 -2250.4• HV_BB_N-7 -1901.1• HV_BB_N-8 -1700.1

•The operational HV was calculated by using pC/MIP obtained from #298917

•S3,S7,N3,N7(inner) are applied 30pC/MIP HV, others are applied 40pC/MIP HV.

•Valid 2009/12/31 06:45~, #299319~

11

Time table

New HV applied2009/12/31, 06:45~#RUN299319~

LUT update2010/01/01,20:36~#RUN299480~

DB update2010/01/01 Valid:2009/12/31, 06:45~

MTM timing turning1161122010/01/02, 20:07~#RUN299603~

MTM timing turning1321162009/12/28, 09:59~RUN298902~

BBLL1 fixed2009/12/31#RUN299317~

First Collision2009/12/27

TIME

Happy new year !!

12

Outputs#RUN299607

• working fine!!

ch0

Q-scan T-scan

13

FEM board problem

• 2010/01/08– Complete feed, LV

recycle could not solve

• 2010/01/09– IR access– exchange fuse on

FEM board• Fixed this problem

14

First PHYSICS

• Run300476– Start: 2010/01/10, 01:36:52~– Fixed FEM problem– Everything FINE!

15

Back Up

16

GTMGTM

LL1 Trigger System

1clock 前のデータ

2clock 前のデータ

3clock 前のデータ

(40-14)clock 前のデータ

40clock 前のデータ

41clock 前のデータ

:

:

::

Latency : 40beam clock (4.24s)

Level 1 delay: 14 beam clock

Level1 sync

clock

106ns

LL1GL1

GTM

LL1LL1write to

AMU

MTM

RH

IC B

ea

m c

lock

FEM

DCM

17

ADC distribution

ch26

ch121

Channels which have relatively larger fraction of overflow

Full range

Full range

18

Expected edge of ADC@new HV

• Maximum #MIP is obtained from Run298917– Weighted mean of top 0.5%

• I guess, weighted mean does not work well for the ch which have overflow.

ch8

red: pedestalBlue: weighted mean of top 0.5%

19

To do

• Need comments and suggestion!!– IF you need bbctree, location of tree is blow

• /direct/phenix+subsys+bbc/phnxbb/Y10DB/tmp/BbcCalib_298917 @rcf (sorry for inconvenience…)

• * still have not applied new HV. • to take data with new HV

– Check MIP & overflow

• After solved BBLL1 problem, I will do calibration again by using BBLL1 triggered event to obtain LUT and DB constants. （ I might also do timing tuning of MTM ）

12/ 29

20

Status

• New HV is applied– MIP & overflow: within acceptable region

• LUT & DB is updated – Valid range

• DB: 2009/12/31, 06:45~ (#RUN299317~)• LUT: 2010/01/01, 20:36~ (#RUN299480~)

• BBLL1 problem fixed• Fine turning of MTM timing

– 116112 (Fine Delay)

2010/01/04

21

Operational HV RUN10 for zero-field

• HV_BB_S-1 -1591.8• HV_BB_S-2 -1832.5• HV_BB_S-3 -1618.8• HV_BB_S-4 -2037.8• HV_BB_S-5 -1936.9• HV_BB_S-6 -1482.5• HV_BB_S-7 -1569.7• HV_BB_S-8 -1880.6

• HV_BB_N-1 -1559.5• HV_BB_N-2 -2265.8• HV_BB_N-3 -1655.5• HV_BB_N-4 -1800.9• HV_BB_N-5 -1491.2• HV_BB_N-6 -2126.8• HV_BB_N-7 -1827.3• HV_BB_N-8 -1647.0