Fragment Mass Analyzer upgradesand

X-array status

Darek Seweryniak, ANL

2

High beam intensity and efficiency updates

FMA upgrades– New beam dump– New entrance quadrupole doublet

Implantation station upgrades– 160X160 DSSD– Digital electronics

X-array status– New frame– 5th super clover

3

New beam dump

Unreacted beam strikes the inside of the anode and the tank near the exit from the tank relatively close to the electrodes

Move the interaction area away from the electrodes Avoid dumping the beam on the anode Requires significant modification of the tank

4

Before…

After…

B. DiGiovine

5

New entrance quads

1st quad shorter with higher fields similar concept was used in EMMA Increase the solid angle from 8 msr to 12 msr at

relatively short distances between target and FMA

6

FMA at 293 mm – stand-alone

OLD:y=0.038 rad

y,max=0.0401 rad

Qx=0.046 radx,max=0.0495 rad

NEW:y=0.060 rad

y,max=0.0634 rad

Qx=0.059 radx,max=0.0591 rad

=7.4 msr =11.8 msr

7

FMA implantation station

Ge clovers 160X160 DSSD

Large area Si

Si/PiN box

plastic dets

8

New high-granularity DSSD

160x160 strips64mm x 64 mm100, 140 m thick

9

160X160 DSSD in-beam test

ln t

E

109Te/5s

109I/100s

10

Digital DAQ for DSSD

IOC 4XDIG IOC 4XDIG IOC 4XDIG

IOC master TTC + 2 router TTC

CPU Diskarray

CPU

NETWORK switch

Based on the GRETINA DAQ (320 channels) Synchronization with analog DAQ through a common clock signal We have just started implementing 160-channel DAQ.

11

New X-array frameStephen Heimsatz

5 clover detectors in a box geometry 64x64 mm, 160x160 DSSD

12

X-array

13

X-array frame features

Frame horizontal movement (rails) and vertical adjustment

In-out detector adjustment All electronics on board but ADC Laptop for controlling and monitoring “portable” (transportation mode) Auto LN2 system on board (to be implemented)

14

Plastic beta detectors

FMA

Identify DSSD pixel beta originated from Thin plastic scintillators with photodiodes Identify beta hitting a Ge detetector Full beta energy in Ge (high energy betas)

plastic

Ge

Ge

plastic

Ge

15

Thank you!